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awesome-cheatsheets
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Merge branch 'master' of github.com:LeCoupa/awesome-cheatsheets

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Julien Le Coupanec 2020-11-30 18:18:00 +01:00
parent 08ffddee57 c689d6cbbf
commit 61813a4812
12 changed files with 1104 additions and 44 deletions
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2
README.md
View File

@ -28,6 +28,7 @@ Feel free to take a look. You might learn new things. They have been designed to
- [C](languages/C.txt)
- [C#](languages/C%23.txt)
- [PHP](languages/php.php)
- [JAVA](languages/java.md)
#### Functional
@ -98,6 +99,7 @@ Feel free to take a look. You might learn new things. They have been designed to
#### Development
- [cURL](tools/curl.sh)
- [Drush](tools/drush.sh)
- [Elasticsearch](tools/elasticsearch.js)
- [Emmet](tools/emmet.md)
- [Git](tools/git.sh)

18
databases/mysql.sh
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@ -7,4 +7,20 @@ mysql -u username -p database_name < file.sql # Import d
SHOW PROCESSLIST; # Show you any queries that are currently running or in the queue to run
GRANT ALL ON mydb.* TO 'myuser'@'locahost'; # Grant **all** privileges on database
# *****************************************************************************
# Users and Privileges
# *****************************************************************************
# Replace 'host' with '%' to indicate any host
CREATE USER 'user'@'host'; # Create user
DROP USER 'user'@'host'; # Remove user.
GRANT ALL PRIVILEGES ON base.* TO 'user'@'host' IDENTIFIED BY 'password'; # Grant access to database using password
GRANT SELECT, INSERT, DELETE ON base.* TO 'user'@'host' IDENTIFIED BY 'password'; # Grant specific privileges to database using password
GRANT ALL PRIVILEGES ON base.* TO 'user'@'host' WITH GRANT OPTION; # Grant **all** privileges on database
REVOKE ALL PRIVILEGES ON base.* FROM 'user'@'host'; # Remove privileges on database
REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'user'@'host'; # Remove **all** privileges on database
FLUSH PRIVILEGES; # Use **only** if you modify grant tables directly using statements like INSERT, UPDATE or DELETE.

10
frontend/html5.html
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@ -45,6 +45,11 @@
<abbr></abbr> <!-- Contains abbreviations while also making the full form avaialable -->
<address></address> <!-- Used to display contact information -->
<code></code> <!-- Used to display inline code snippets -->
<q></q> <!-- Defines a short inline quotation -->
<sub></sub> <!-- Defines subscripted text -->
<sup></sup> <!-- Defines superscripted text -->
<kbd></kbd> <!-- Specifies text as keyboard input -->
<small></small> <!-- Specifies small text -->
<!-- Links Formatting -->
@ -176,6 +181,11 @@ width="" <!-- Describes the width of th
<time></time> <!-- Identifies the time and date -->
<wbr> <!-- A line break within the content -->
<!-- Some other useful tags -->
<canvas></canvas> <!-- Allows to draw 2D shapes on the web page with the help of javascript -->
<keygen> <!-- Represents a control for generating a public-private key pair -->
<map></map> <!-- Specifies an image map -->
<!-- Collective Character Obejcts -->

4
languages/bash.sh
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@ -95,6 +95,8 @@ genscript # converts plain text files into postscript for pr
dvips <filename> # prints .dvi files (i.e. files produced by LaTeX)
grep <pattern> <filenames> # looks for the string in the files
grep -r <pattern> <dir> # search recursively for pattern in directory
head -n file_name | tail +n # Print nth line from file.
head -y lines.txt | tail +x # want to display all the lines from x to y. This includes the xth and yth lines.
##############################################################################
@ -111,7 +113,7 @@ cd .. # changes to the parent directory
cd <dirname> # changes directory
cp -r <dir1> <dir2> # copy <dir1> into <dir2> including sub-directories
pwd # tells you where you currently are
cd ~ # changes to home.
##############################################################################
# SSH, SYSTEM INFO & NETWORK COMMANDS

619
languages/java.md Normal file
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@ -0,0 +1,619 @@
### HELLO WORLD :ghost:
```java
//Text file name HelloWorld.java
public class HelloWorld {
// main() is the method
public static void main (String[] arfs)
//Prints "Hello World" in the terminal window.
System.out.pritn("Hello World");
}
```
### COMPILATION & EXECUTING JAVA CODE
* Goto your program directory in terminal (Assumed JAVA Path is set)
* After for compile your code
> **javac HelloWorld.java (your program file name)**
* For run program
> **java HelloWorld (main class name)**
### DATA TYPES
| Type | Set of values | Values | Operators |
|:-------:|:-----------------------:|:----------------------------:|:---------:|
| int | integers | between -2^31 and + (2^31)-1 | + - * / % |
| double | floating-point numbers | real numbers | + - * / |
| boolean | boolean values | true or false | && \|\| ! |
| char | characters | | |
| String | sequences of characters | | |
### DECLARATION AND ASSIGNMENT STATEMENTS
```java
//Declaration statement
int a,b;
//Assignment statement
a = 13212; //a is the variable name; 13212 is the literal which is assign to the variable a
//Initialization statement
int c = a + b;
```
### COMPARISON OPERATORS
| Operation | Meaning |
|:---------:|:---------------------:|
| == | equal |
| != | not equal |
| < | less than |
| > | greater than |
| <= | less than or equal |
| >= | greater than or equal |
### PRINTING
```java
String s = "Happy Coding Folks!!"
void System.out.print(String s) //print s
void System.out.println(String s) //print s, followed by a newline
void System.out.println() //print a newline
```
### PARSING COMMAND-LINE ARGUMENTS
```java
String s = "Java is the best!!"
int Integer.parseInt(String s) //convert s to an int value
double Double.parseDouble(String) //convert s to a double value
long Long.parseLong(String s) // convert s to a long value
````
### MATH LIBRARY
```java
Public Class Math{
double abs(double a) // absolute value of a
double max(double a, double b) //maximum of a and b
double min(double a, dobule a) //minimum of a and b
double sin(double theta) //sine of theta
double cos(double theta) //cosine of theta
double tan(double theta) //tangent of theta
double toRadians(double degrees) // convert angle from degrees to radians
double toDegreestouble radians) // convert angle from radians to degrees
double exp(doube a) // exponential (e^a)
double pow(double a, double p) //raise a to the bth power (a^b)
double random() //random in [0,1)
double sqrt(double a) //square root of a
}
```
### EXAMPLES OF TYPE CONVERSION
| Expression | Expression type | Expression value |
|:---------------------:|:---------------:|:----------------:|
| (1 + 2 + 3 + 4) / 4.0 | double | 2.5 |
| Math.sqrt(4) | double | 2.0 |
| "123343" + 99 | String | "12334399" |
| 11 * 0.25 | double | 2.75 |
| (int) 11 * 0.25 | double | 2.75 |
| 11 * (int) 0.25 | int | 0 |
| (int) (11 * 0.25) | int | 2 |
### CONDITIONAL & LOOP STATEMENT
#### ANATOMY OF CONDITIONAL STATEMENT
> IF Statement
```java
if (x>y) { // x > y is the boolean expression
//Sequence of statements
x = y;
}
```
> IF-ELSE STATEMENT
```java
if (BOOLEAN EXPRESSION) {
//Sequence of statements
} else {
//Sequence of statements
}
```
> NESTED IF STATEMENT
```java
if (BOOLEAN EXPRESSION) {
//Sequence of statements
} else if {
//Sequence of statements
}
.
.
.
else {
//Sequence of statements
}
```
>SWITCH STATEMENT
```java
switch (VARIABLE TO EVALUATE ITS VALUE) {
case value: Statement; break;
...
...
...
default: Statement; break;
}
```
**Example:**
```java
int month = 8;
String monthString;
switch (month) {
case 1: monthString = "January";
break;
case 2: monthString = "February";
break;
case 3: monthString = "March";
break;
case 4: monthString = "April";
break;
case 5: monthString = "May";
break;
case 6: monthString = "June";
break;
case 7: monthString = "July";
break;
case 8: monthString = "August";
break;
case 9: monthString = "September";
break;
case 10: monthString = "October";
break;
case 11: monthString = "November";
break;
case 12: monthString = "December";
break;
default: monthString = "Invalid month";
break;
}
```
#### ANATOMY OF A LOOP STATEMENT
>FOR LOOP STATEMENT
```java
for (declare and initialize a loop control variable; loop-continuation condition/s; increment or decrement of the variable of control)
{
//Statement
}
```
**Example:**
```java
for (int i = 0; i <= n; i++) {
System.out.println(i);
}
```
> WHILE LOOP STATEMENT
```java
while(condition){ //till condition will be true.
//code to be executed
}
```
**Example:**
```java
//Initialization is a separate statement
int power = 1;
while ( power <= 10/2 ) // power <= n/2 is an example of the loop-continuation condition
{
System.out.println(power);
}
```
> DO-WHILE LOOP STATEMENT
```java
do{ //always run one time even if condition would be false
//Statement
} while(loop-continuation condition);
```
**Example:**
```java
int i=1;
do{
System.out.println(i);
i++;
}while(i<=10);
```
### ARRAY
> ARRAY DECLARATION
```java
int[] ai; // array of int
short[][] as; // array of array of short
short s, // scalar short
aas[][]; // array of array of short
Object[] ao; // array of Object
Collection<?>[] ca; // array of Collection of unknown type
```
> DECLARATION OF ARRAY VARIABLE
```java
Exception ae[] = new Exception[3];
Object aao[][] = new Exception[2][3];
int[] factorial = { 1, 1, 2, 6, 24, 120, 720, 5040 };
char ac[] = { 'n', 'o', 't', ' ', 'a', ' ',
'S', 't', 'r', 'i', 'n', 'g' };
String[] aas = { "array", "of", "String", };
```
### ACCESS MODIFIERS
1. defualt(No keyword required)
2. private
3. public
4. protected
### NON ACCESS MODIFIERS
1. static
2. final
3. transient
4. abstract
5. synchronized
6. volatile
## Object Oriented Programming (OOPs) Concept :clipboard:
### OBJECT
```java
//Declare a variable, object name
String s;
//Invoke a contructor to create an object
s = new String ("Hello World");
//Invoke an instance method that operates on the object's value
char c = s.chartAt(4);
```
> INSTANCE VARIABLES
```java
public class Charge {
//Instance variable declarations
private final double rx, ry;
private final double q;
}
```
### METHODS
```java
public static double sum (int a, int b) { //double is the return type, sum is the method's name, a and b are two arguments of type int;
int result; //local variable
result = a + b;
return result;//return statement;
}
```
### CLASS DECLARATION
```java
class MyClass {
// field, constructor, and
// method declarations
}
```
**Example:**
```java
public class Bicycle {
// the Bicycle class has
// three fields
public int cadence;
public int gear;
public int speed;
// the Bicycle class has
// one constructor
public Bicycle(int startCadence, int startSpeed, int startGear) {
gear = startGear;
cadence = startCadence;
speed = startSpeed;
}
// the Bicycle class has
// four methods
public void setCadence(int newValue) {
cadence = newValue;
}
public void setGear(int newValue) {
gear = newValue;
}
public void applyBrake(int decrement) {
speed -= decrement;
}
public void speedUp(int increment) {
speed += increment;
}
}
```
>DECLARING CLASSESS IMPLEMENTATING AN INTERFACE AND EXTENDING PARENT CLASS
```java
class MyClass extends MySuperClass implements YourInterface {
// field, constructor, and
// method declarations
}
```
* MyClass is a subclass of MySuperClass and that it implements the YourInterface interface.
> CONSTRUCTORS
* A class contains constructors that are invoked to create objects from the class blueprint.
* Constructor declarations look like method declarations—except that they use the name of the class and have no return type
* Each and every class has defualt No-args constructor.
```java
public class Bicycle{
private int gear;
private int cadence;
private int speed;
public Bicycle(int startCadence, int startSpeed, int startGear) { //args-constructor
gear = startGear;
cadence = startCadence;
speed = startSpeed;
}
public Bicycle(){//No-args constructor
super();
}
}
```
### POLYMORPHISM
* Polymorphism is the concept where an object behaves differently in different situations.
* There are two types of polymorphism
1. compile time polymorphism
2. runtime polymorphism.
#### 1. Compile Time Polymorphism
* Compile-time polymorphism is achieved by method overloading.
* method overloading is creating multiple method with methods name is same and arguments are different.
```java
public class Circle {
public void draw(){
System.out.println("Drwaing circle with default color Black and diameter 1 cm.");
}
public void draw(int diameter){ //method draw() overloaded.
System.out.println("Drwaing circle with default color Black and diameter"+diameter+" cm.");
}
public void draw(int diameter, String color){ //method draw() overloaded.
System.out.println("Drwaing circle with color"+color+" and diameter"+diameter+" cm.");
}
}
```
#### 2. Run Time Polymorphism
* Run-time polymorphism is achieved by method overriding.
* Runtime polymorphism is implemented when we have an **“IS-A”** relationship between objects.
* method overriding is the subclass has to override the superclass method.
```java
public interface Shape {
public void draw();
}
```
```java
public class Circle implements Shape{
@Override
public void draw(){
System.out.println("Drwaing circle");
}
}
```
```java
public class Square implements Shape {
@Override
public void draw() {
System.out.println("Drawing Square");
}
}
```
* `Shape` is the superclass and there are two subclasses `Circle` and `Square`
* Below is an example of runtime polymorphism.
```java
Shape sh = new Circle();
sh.draw();
Shape sh1 = getShape(); //some third party logic to determine shape
sh1.draw();
```
### INHERITANCE
* Inheritance is the mechanism of code reuse.
* The object that is getting inherited is called the superclass and the object that inherits the superclass is called a subclass.
* We use `extends` keyword in java to implement inheritance from class.
* We use `implements` keyword in java to implement inheritance from interface.
```java
public class Superclass{
// methods and fields
}
```
```java
public interface Superinterface{
// methods and fields
}
```
```java
public class Subclass extends Superclass implements Superinterface{
// methods and fields
}
```
### Abstraction
* Abstraction is the concept of hiding the internal details and describing things in simple terms.
* Abstraction can be achieved by two ways.
1. Abstract Class
2. Interface
#### 1. Abstract Class
* An abstract class must be declared with an `abstract` keyword.
* It can have abstract and non-abstract methods.
* It cannot be instantiated.
* It can have constructors and static methods also.
* It can have final methods which will force the subclass not to change the body of the method.
```java
abstract class Flower{
abstract String Smell(); //abstract method.
String Oil(){ // non-abstract method.
System.out.println("Flower Oil is good.");
}
}
public class Lily extends Flower{
private String Smell(){ // implementation of abstarct method.
System.out.println("Lily smell's lovender.");
}
}
```
#### 2. Interface
* Interface is a blueprint of a **class**.
* It can have only abstract methods. [Except Java 8 and next versions.]
* Since Java 8, we can have **default and static** methods in an interface.
```java
interface print{
void printPaper();
}
public class A4 implements print{
public void printPaper(){
System.out.println("A4 Page Printed. ");
}
}
```
### Encapsulation
* Encapsulation is used for access restriction to class members and methods.
* Encapsulation is the technique used to implement abstraction in OOP.
* As in encapsulation, the data in a class is hidden from other classes, so it is also known as **data-hiding**.
* Encapsulation can be achieved by Declaring all the variables in the class as private and writing public methods in the class to set and get the values of variables.
* Best example of Encapsulation is POJO (Plain-Java-Object-Class).
```java
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
```
## ADVANCE DATA TYPE
* **STACK DATA TYPE**
```java
public class Stack<Item> implements Iterable <Item>
Stack() //create an empty stack
boolean isEmpty() //return if the stack empty
void push(Item item) // push an item onto the stack
Item pop() //return and remove the item that was inserted most recently
int size() //number of item on stack
```
* **QUEUE DATA TYPE**
```java
public class Queue<Item> implements Iterable<Item>
Queue() //create an emptyh queue
boolean isEmpthy() //return if the queue empthy
void enqueue(Item item) // insert an item onto queue
Item dequeue() //return and remove the item that was inserted least recently
int size() //number of item on queue
```
* **ITERABLE**
```java
//import Iterator
import java.util.Iterator;
public class Queue<Item> implements Iterable <Item> {
//FIFO queue
private Node first;
private Node last;
private class Node {
Item item;
Node next;
}
public void enqueue (Item item)
...
public Item dequeue()
...
}
```
* **SYMBOL TABLE DATA TYPE**
```java
public class ST<Key extends Comparable<Key>, Value>
ST() //create and empty symbol table
void put(Key key, Value val) //associate val with key
Value get(Key key) //value associated with key
void remove(Key key) //remove key (and its associated value)
boolean contains (Key key) //return if there is a value associated with key
int size() //number of key-value pairs
Iterable<Key> keys() // all keys in the symbol table
```
* **SET DATA TYPE**
```java
public class SET<Key extends Comparable<Key>> implements Iterable<Key>
SET() //create an empthy set
boolean isEmpthy() //return if the set is empthy
void add (Key key) //add key to the set
void remove(Key key) //remove key from set
boolean contains(Key key) //return if the key is in the set
int size() //number of elements in set
```

103
languages/php.php
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@ -366,3 +366,106 @@ class ClassWithLogger
*/
use LoggerAwareTrait;
}
/**
* PHP Regex.
*/
// Meta Characters.
^ Start of subject (or line in multiline mode)
$ End of subject (or line in multiline mode)
[ Start character class definition
] End character class definition
| Alternates, eg (a|b) matches a or b
( Start subpattern
) End subpattern
\ Escape character
// Pattern Modifiers.
i Caseless - ignore case
m Multiline mode - ^ and $ match start and end of lines
s Dotall - . class includes newline
x Extended- comments & whitespace
e preg_replace only - enables evaluation of replacement as PHP code
S Extra analysis of pattern
U Pattern is ungreedy
u Pattern is treated as UTF-8
// Subpattern Modifiers & Assertions.
(?:) Non capturing subpattern ((?:foo|fu)bar) matches foobar or fubar without foo or fu appearing as a captured subpattern
(?=) Positive look ahead assertion foo(?=bar) matches foo when followed by bar
(?!) Negative look ahead assertion foo(?!bar) matches foo when not followed by bar
(?<=) Positive look behind assertion (?<=foo)bar matches bar when preceded by foo
(?<!) Negative look behind assertion (?<!foo)bar matches bar when not preceded by foo
(?>) Once-only subpatterns (?>\d+)bar Performance enhancing when bar not present
(?(x)) Conditional subpatterns (?(3)foo|fu)bar Matches foo if 3rd subpattern has matched, fu if not
(?#) Comment (?# Pattern does x y or z)
// Base Character Classes
\w Any "word" character (a-z 0-9 _)
\W Any non "word" character
\s Whitespace (space, tab CRLF)
\S Any non whitepsace character
\d Digits (0-9)
\D Any non digit character
. (Period) - Any character except newline
// Multiplicity.
n* Zero or more of n
n+ One or more of n
n? Zero or one occurrences of n
{n} n occurrences exactly
{n,} At least n occurrences
{,m} At most m occurrences
{n,m} Between n and m occurrences (inclusive)
// PHP Regular Expression Functions.
Function Description
preg_match() The preg_match() function searches string for pattern, returning true if pattern exists, and false otherwise.
preg_match_all() The preg_match_all() function matches all occurrences of pattern in string. Useful for search and replace.
preg_replace() The preg_replace() function operates just like ereg_replace(), except that regular expressions can be used in the pattern and replacement input parameters.
preg_split() Preg Split (preg_split()) operates exactly like the split() function, except that regular expressions are accepted as input parameters.
preg_grep() The preg_grep() function searches all elements of input_array, returning all elements matching the regex pattern within a string.
preg_ quote() Quote regular expression characters
// Code Snippets.
//A better solution for validate email syntax is using filter_var.
if (filter_var('test+email@fexample.com', FILTER_VALIDATE_EMAIL)) {
echo "Your email is ok.";
} else {
echo "Wrong email address format.";
}
//Validate username, consist of alpha-numeric (a-z, A-Z, 0-9), underscores, and has minimum 5 character and maximum 20 character.
//You could change the minimum character and maximum character to any number you like.
$username = "user_name12";
if (preg_match('/^[a-z\d_]{5,20}$/i', $username)) {
echo "Your username is ok.";
} else {
echo "Wrong username format.";
}
//Validate domain
$url = "http://domain-name.com/";
if (preg_match('/^(http|https|ftp):\/\/([A-Z0-9][A-Z0-9_-]*(?:\.[A-Z0-9][A-Z0-9_-]*)+):?(\d+)?\/?/i', $url)) {
echo "Your url is ok.";
} else {
echo "Wrong url.";
}
//Extract domain name from certain URL
$url = "http://domain-name.com/index.html";
preg_match('@^(?:http://)?([^/]+)@i', $url, $matches);
$host = $matches[1];
echo $host; // domain-name.com
//Highlight a word in the content
$text = "A regular expression (shortened as regex) is a sequence of characters that define a search pattern. Usually such patterns are used by string-searching algorithms for 'find' or 'find and replace' operations on strings, or for input validation.";
$text = preg_replace("/\b(regex)\b/i", 'replaced content', $text);
echo $text; /*A regular expression (shortened as replaced content) is a sequence of characters that define a search pattern. Usually such patterns are used by string-searching algorithms for 'find' or 'find and replace' operations on strings, or for input validation.*/

66
tools/drush.sh Normal file
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@ -0,0 +1,66 @@
##############################################################################
# DRUSH
# Install: https://www.drush.org/install/
# Usage: https://www.drush.org/usage/
##############################################################################
cache clear (cc) # Clear all caches.
cron # Run all cron hooks.
disable (dis) # Disable one or more modules.
download (dl) # Download core Drupal and projects like CCK, Zen, etc.
enable (en) # Enable one or more modules.
eval # Evaluate arbitrary php code after bootstrapping Drupal.
help # Print this help message. Use --filter to limit command list to one command file (e.g. --filter=pm)
info # Release information for a project
installcore (ic) # Install Drupal core via the specified install profile. Note that updating core with Drush is not yet available. See http://drupal.org/node/434944.
refresh (rf) # Refresh update status information script Runs the given php script(s) after a full Drupal bootstrap. NOTE: you can't supply absolute paths to the script e.g. ~/Desktop/script.php won't work Desktop/script.php will
sql cli (sqlc) # Open a SQL command-line interface using Drupal?s credentials.
sql conf # Print database connection details.
sql connect # A string for connecting to the DB.
sql dump # Exports the Drupal DB as SQL using mysqldump.
sql load # Copy source database to target database.
sql query (sqlq) # Execute a query against the site database.
status (st) # Provides a birds-eye view of the current Drupal installation, if any.
statusmodules (sm) # Show module enabled/disabled status
sync # Rsync the Drupal tree to/from another server using ssh.
test clean # Delete leftover tables and files from prior test runs.
test mail # Run all tests and mail the results to your team.
uninstall # Uninstall one or more modules.
update (up) # Update your project code and apply any database updates required (update.php)
updatecode (upc) # Update your project code. Moves existing project files to the backup directory specified in the config.
updatedb (updb) # Execute the update.php process from the command line.
variable delete (vdel) # Delete a variable.
variable get (vget) # Get a list of some or all site variables and values.
variable set (vset) # Set a variable.
watchdog delete (wd) # Delete all messages or only those of a specified type.
watchdog show (ws) # Shows recent watchdog log messages. Optionally filter for a specific type.

39
tools/git.sh
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@ -1,28 +1,55 @@
git init # initiates git in the current directory
git clone <address> # creates a git repo from given address (get the address from your git-server)
git clone <address> -b <branch_name> <path/to/directory> # clones a git repo from the address into the given directory and checkout's the given branch
git clone <address> -b <branch_name> --single-branch # Clones a single branch
git add file.txt # adds(stages) file.txt to the git
git add * # adds(stages) all new modifications, deletions, creations to the git
git reset file.txt # Removes file.txt from the stage
git reset --hard # Throws away all your uncommitted changes, hard reset files to HEAD
git rm file.txt # removes file.txt both from git and file system
git rm --cached file.txt # only removes file.txt both from git index
git status # shows the modifications and stuff that are not staged yet
git branch # shows all the branches (current branch is shown with a star)
git branch my-branch # creates my-branch
git branch -d my-branch # deletes my-branch
git checkout my-bracnch # switches to my-branch
git checkout my-branch # switches to my-branch
git merge my-branch # merges my-branch to current branch
git push origin --delete my-branch # delete remote branch
git branch -m <new-branch-name> # rename the branch
git checkout --orphan <branch_name> # checkout a branch with no commit history
git branch -vv # list all branches and their upstreams, as well as last commit on branch
git branch -a # List all local and remote branches
git cherry-pick <commit_id> # merge the specified commit
git cherry-pick <commit_id> # merge the specified commit
git cherry-pick <commit_id_A>^..<commit_id_B> # pick the entire range of commits where A is older than B ( the ^ is for including A as well )
git remote # shows the remotes
git remote -v # shows the remote for pull and push
git remote add my-remote <address> # creates a remote (get the address from your git-server)
git remote rm my-remote # Remove a remote
git log # shows the log of commits
git log --oneline # shows the log of commits, each commit in a single line
git log -p <file_name> # change over time for a specific file
git log <Branch1> ^<Branch2> # lists commit(s) in branch1 that are not in branch2
git log -n <x> # lists the last x commits
git log -n <x> --oneline # lists the last x commits, each commit in single line
git grep --heading --line-number '<string/regex>' # Find lines matching the pattern in tracked files
git log --grep='<string/regex>' # Search Commit log
git commit -m "msg" # commit changes with a msg
git commit --amend # combine staged changes with the previous commit, or edit the previous commit message without changing its snapshot
git commit --amend --no-edit # amends a commit without changing its commit message
git commit --amend --author='Author Name <email@address.com>' # Amend the author of a commit
git push my-remote my-branch # pushes the commits to the my-remote in my-branch (does not push the tags)
git revert <commit-id> # Undo a commit by creating a new commit
git show # shows one or more objects (blobs, trees, tags and commits).
git diff # show changes between commits, commit and working tree
git diff --color # show colored diff
git diff --staged # Shows changes staged for commit
git tag # shows all the tags
git tag -a v1.0 -m "msg" # creates an annotated tag
@ -39,7 +66,7 @@ git stash -u # stash everything including new untracked
git stash save "msg" # stash with a msg
git stash list # list all stashes
git stash pop # delete the recent stash and applies it
git stash stach@{2} # delete the {2} stash and applies it
git stash pop stash@{2} # delete the {2} stash and applies it
git stash show # shows the description of stash
git stash apply # keep the stash and applies it to the git
git stash branch my-branch stash@{1} # creates a branch from your stash
@ -55,6 +82,11 @@ git clean -f -d/git clean -fd # To remove directories permanently
git clean -f -X/git clean -fX # To remove ignored files permanently
git clean -f -x/git clean -fx # To remove ignored and non-ignored files permanently
git config --global --list # lists the git configuration for all repos
git config --global --edit # opens an editor to edit the git config file
git config --global alias.<handle> <command> # add git aliases to speed up workflow , eg. if handle is st and command is status then running git st would execute git status
.gitignore
# is a file including names of stuff that you don"t want to be staged or tracked.
# You usually keep your local files like database, media, and etc here.
@ -64,4 +96,3 @@ git clean -f -x/git clean -fx # To remove ignored and non-ignored files perm
# is a hidden directory in repo directory including git files. It is created after "git init".

2
tools/heroku.sh
View File

@ -100,6 +100,8 @@ git config --global --remove-section url.ssh://git@heroku.com/ # To remove
### Managing and deploying applications on Heroku (Using Docker) ###################################
#####################################################################################################
# Setting stack of your app to a Container
heroku stack:set container
heroku container:login # Login to the container resistry
git clone https://github.com/heroku/alpinehelloworld.git # Get sample code by cloning into the following repository

208
tools/nginx.sh
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@ -4,6 +4,212 @@
##############################################################################
sudo nginx -t # Check syntax
sudo systemctl status nginx # nginx current status
sudo systemctl reload nginx # Reload nginx
sudo service nginx restart # Restart nginx
sudo systemctl restart nginx # Restart nginx
sudo ln -s /etc/nginx/sites-available/example.com /etc/nginx/sites-enabled/ # Link website
# *****************************************************************************
# General Settings
# *****************************************************************************
# Ports
server {
# Use HTTP protocol
listen 80;
# Use HTTPS protocol
listen 443 ssl;
# Listen on port 80 using IPv6
listen [::]:80;
# Listen on port 80 using **only** IPv6
listen [::]:80 ipv6only=on;
}
# Domain name (server_name)
server {
# Listen to example.com
server_name example.com;
# Listen to multiple domains
server_name example.com www.example.com;
# Listen to all sub-domains
server_name *.example.com;
# Listen to all top-level domains
server_name example.*;
# Listen to unspecified hostnames (listens to IP address itself)
server_name "";
}
# *****************************************************************************
# Serving Files
# *****************************************************************************
# Static assets (traditional web server)
server {
listen 80;
server_name example.com;
root /path/to/website;
# root /www/data/ for example
# If there's no 'root' inside, it will look for /www/data/index.html
location / {
}
# If there's no 'root' inside, it will look for /www/data/images/index.html
location /images/ {
}
# Since there's 'root' inside, it will look for /www/media/videos/index.html
location /videos/ {
root /www/media;
}
}
# *****************************************************************************
# Redirects
# *****************************************************************************
# 301 Permanent
server {
# Redirect www.example.com to example.com
listen 80;
server_name www.example.com;
return 301 http://example.com$request_uri;
}
server {
# Redirect http to https
listen 80;
server_name example.com;
return 301 https://example.com$request_uri;
}
# 302 Temporary
server {
listen 80;
server_name yourdomain.com;
return 302 http://otherdomain.com;
}
# *****************************************************************************
# Reverse proxy
# *****************************************************************************
# Useful for Node.js, Streamlit, Jupyter, etc
# Basic
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://0.0.0.0:3000;
# where 0.0.0.0:3000 is your Node.js Server bound on 0.0.0.0 listing on port 3000
}
}
# Basic + (upstream)
upstream node_js {
server 0.0.0.0:3000;
# where 0.0.0.0:3000 is your Node.js Server bound on 0.0.0.0 listing on port 3000
}
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://node_js;
}
}
# Upgraded Connection (useful for applications with support for WebSockets)
upstream node_js {
server 0.0.0.0:3000;
}
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://node_js;
proxy_redirect off;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $host;
}
}
# *****************************************************************************
# HTTPS Protocol
# *****************************************************************************
# The majority of SSL options depend on what your application does or needs
server {
listen 443 ssl;
server_name example.com;
ssl on;
ssl_certificate /path/to/cert.pem;
ssl_certificate_key /path/to/privkey.pem;
ssl_stapling on;
ssl_stapling_verify on;
ssl_trusted_certificate /path/to/fullchain.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
add_header Strict-Transport-Security max-age=15768000;
}
# Permanent redirect to HTTPS secured domain
server {
listen 80;
server_name yourdomain.com;
return 301 https://$host$request_uri;
}
# You can easily secure you website/app using Let's Encrypt.
# Go https://certbot.eff.org/lets-encrypt/ubuntuxenial-nginx.html for more information
# *****************************************************************************
# Load Balancing
# *****************************************************************************
# Useful for large applications running in multiple instances. Below example is for reverse proxy
upstream node_js {
server 0.0.0.0:3000;
server 0.0.0.0:4000;
server 127.155.142.421;
}
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://node_js;
}
}

3
tools/vim.txt
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@ -87,6 +87,7 @@ J join line below to the current one
cc change (replace) an entire line
cw change (replace) to the end of word
C change (replace) to the end of line
ct' change (replace) until the ' character (can change ' for any character)
s delete character at cursor and substitute text
S delete line at cursor and substitute text (same as cc)
xp transpose two letters (delete and paste, technically)
@ -118,6 +119,7 @@ x delete current character
X delete previous character
dw delete the current word
dd delete (cut) a line
dt' delete until the next ' character on the line (replace ' by any character)
D delete from cursor to end of line
:[range]d delete [range] lines
@ -279,6 +281,7 @@ CTRL-w < increase window width
CTRL-w > decrease window width
CTRL-w = equal window
CTRL-w o close other windows
zz Centers the window to the current line
##############################################################################

74
tools/vscode.md
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@ -4,89 +4,89 @@
### HTML & CSS
- `CSScomb`: Coding style formatter for CSS, Less, SCSS and Saas.
- [`CSScomb`](https://marketplace.visualstudio.com/items?itemName=mrmlnc.vscode-csscomb): Coding style formatter for CSS, Less, SCSS and Saas.
- `Puglint`: Linter and style checker for pug.
- [`Puglint`](https://marketplace.visualstudio.com/items?itemName=mrmlnc.vscode-puglint): Linter and style checker for pug.
- `Sass`: Indented Sass syntax highlighting, autocomplete & snippets.
- [`Sass`](https://marketplace.visualstudio.com/items?itemName=Syler.sass-indented): Indented Sass syntax highlighting, autocomplete & snippets.
- `SCSS IntelliSense`: Advanced autocompletion and refactoring support for SCSS.
- [`SCSS IntelliSense`](https://marketplace.visualstudio.com/items?itemName=mrmlnc.vscode-scss): Advanced autocompletion and refactoring support for SCSS.
- `XML Format`: Format XML documents.
- [`XML Format`](https://marketplace.visualstudio.com/items?itemName=mikeburgh.xml-format): Format XML documents.
### JavaScript, Node & NPM
- `Import Cost`: This extension will display inline in the editor the size of the imported package.
- [`Import Cost`](https://marketplace.visualstudio.com/items?itemName=wix.vscode-import-cost): This extension will display inline in the editor the size of the imported package.
- `ESLint`: Integrates ESLint into VS Code
- [`ESLint`](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint): Integrates ESLint into VS Code
- `NPM`: NPM support for VS Code.
- [`NPM`](https://marketplace.visualstudio.com/items?itemName=eg2.vscode-npm-script): NPM support for VS Code.
- `NPM Intellisense`: Visual Studio Code plugin that autocompletes NPM modules in import statements.
- [`NPM Intellisense`](https://marketplace.visualstudio.com/items?itemName=christian-kohler.npm-intellisense): Visual Studio Code plugin that autocompletes NPM modules in import statements.
- `Version Lens`: Shows the latest version for each package using code lens.
- [`Version Lens`](https://marketplace.visualstudio.com/items?itemName=pflannery.vscode-versionlens): Shows the latest version for each package using code lens.
- `Vetur`: Vue tooling for VS Code.
- [`Vetur`](https://marketplace.visualstudio.com/items?itemName=octref.vetur): Vue tooling for VS Code.
### PHP
- `Better PHPUnit`: A better PHPUnit test runner.
- [`Better PHPUnit`](https://marketplace.visualstudio.com/items?itemName=calebporzio.better-phpunit): A better PHPUnit test runner.
- `Laravel Artisan`: Laravel Artisan commands within Visual Studio Code.
- [`Laravel Artisan`](https://marketplace.visualstudio.com/items?itemName=ryannaddy.laravel-artisan): Laravel Artisan commands within Visual Studio Code.
- `PHP CS Fixer`: PHP CS Fixer extension for VS Code, php formatter, php code beautify tool.
- [`PHP CS Fixer`](https://marketplace.visualstudio.com/items?itemName=junstyle.php-cs-fixer): PHP CS Fixer extension for VS Code, php formatter, php code beautify tool.
- `PHP Doc Comment VSCode Plugin`: Add phpdoc @param and @return tag for selected function signatures.
- [`PHP Doc Comment VSCode Plugin`](https://marketplace.visualstudio.com/items?itemName=rexshi.phpdoc-comment-vscode-plugin): Add phpdoc @param and @return tag for selected function signatures.
- `PHP IntelliSense`: Advanced Autocompletion and Refactoring support for PHP.
- [`PHP IntelliSense`](https://marketplace.visualstudio.com/items?itemName=felixfbecker.php-intellisense): Advanced Autocompletion and Refactoring support for PHP.
### Git
- `Git History`: View git log, file history, compare branches or commits.
- [`Git History`](https://marketplace.visualstudio.com/items?itemName=donjayamanne.githistory): View git log, file history, compare branches or commits.
- `Gitignore`: A extension for Visual Studio Code that assists you in working with .gitignore files.
- [`Gitignore`](https://marketplace.visualstudio.com/items?itemName=codezombiech.gitignore): A extension for Visual Studio Code that assists you in working with .gitignore files.
### Themes
- `Material Icon Theme`: Material Design Icons for Visual Studio Code.
- [`Material Icon Theme`](https://marketplace.visualstudio.com/items?itemName=PKief.material-icon-theme): Material Design Icons for Visual Studio Code.
- `Palenight Theme`: An elegant and juicy material-like theme for Visual Studio Code.
- [`Palenight Theme`](https://marketplace.visualstudio.com/items?itemName=whizkydee.material-palenight-theme): An elegant and juicy material-like theme for Visual Studio Code.
### Handy
- `Better comments`: Improve your code commenting by annotating with alert, informational, TODOs, and more!
- [`Better comments`](https://marketplace.visualstudio.com/items?itemName=aaron-bond.better-comments): Improve your code commenting by annotating with alert, informational, TODOs, and more!
- `Debugger for Chrome`: Debug your JavaScript code in the Chrome browser.
- [`Debugger for Chrome`](https://marketplace.visualstudio.com/items?itemName=msjsdiag.debugger-for-chrome): Debug your JavaScript code in the Chrome browser.
- `EditorConfig for VS Code`: EditorConfig Support for Visual Studio Code.
- [`EditorConfig for VS Code`](https://marketplace.visualstudio.com/items?itemName=EditorConfig.EditorConfig): EditorConfig Support for Visual Studio Code.
- `File Utils`: A convenient way of creating, duplicating, moving, renaming and deleting files and directories.
- [`File Utils`](https://marketplace.visualstudio.com/items?itemName=sleistner.vscode-fileutils): A convenient way of creating, duplicating, moving, renaming and deleting files and directories.
- `Final-Newline`: Inserts a final newline when saving the document.
- [`Final-Newline`](https://marketplace.visualstudio.com/items?itemName=samverschueren.final-newline): Inserts a final newline when saving the document.
- `Formatting Toggle`: A VS Code extension that allows you to toggle the formatter (Prettier, Beautify, …) ON and OFF with a simple click.
- [`Formatting Toggle`](https://marketplace.visualstudio.com/items?itemName=tombonnike.vscode-status-bar-format-toggle): A VS Code extension that allows you to toggle the formatter (Prettier, Beautify, …) ON and OFF with a simple click.
- `Open in Github/Bitbucket...`: Jump to a source code line in Github / Bitbucket, Gitlab, VisualStudio.com
- [`Open in Github/Bitbucket...`](https://marketplace.visualstudio.com/items?itemName=ziyasal.vscode-open-in-github): Jump to a source code line in Github / Bitbucket, Gitlab, VisualStudio.com
- `OpenChrome`: Open file with Chrome.
- [`OpenChrome`](https://marketplace.visualstudio.com/items?itemName=huazaierli.openchrome&ssr=false#overview): Open file with Chrome.
- `Output Colorizer`: Syntax Highlighting for log files.
- [`Output Colorizer`](https://marketplace.visualstudio.com/items?itemName=IBM.output-colorizer): Syntax Highlighting for log files.
- `Prettier - Code formatter`: VS Code plugin for prettier/prettier.
- [`Prettier - Code formatter`](https://marketplace.visualstudio.com/items?itemName=esbenp.prettier-vscode): VS Code plugin for prettier/prettier.
- `Project Manager`: Easily switch between projects.
- [`Project Manager`](https://marketplace.visualstudio.com/items?itemName=alefragnani.project-manager): Easily switch between projects.
- `REST Client`: REST Client for Visual Studio Code.
- [`REST Client`](https://marketplace.visualstudio.com/items?itemName=humao.rest-client): REST Client for Visual Studio Code.
- `SVG Viewer`: SVG Viewer for Visual Studio Code.
- [`SVG Viewer`](https://marketplace.visualstudio.com/items?itemName=cssho.vscode-svgviewer): SVG Viewer for Visual Studio Code.
- `Terminal`: Terminal for Visual Studio Code.
- [`Terminal`](https://marketplace.visualstudio.com/items?itemName=formulahendry.terminal): Terminal for Visual Studio Code.
- `Vue Peek`: Allows peek and goto definition for Vue single-file components.
- [`Vue Peek`](https://marketplace.visualstudio.com/items?itemName=dariofuzinato.vue-peek): Allows peek and goto definition for Vue single-file components.
- `VS Live Share`: Real-time collaborative development from the comfort of your favorite tools.
- [`VS Live Share`](https://marketplace.visualstudio.com/items?itemName=MS-vsliveshare.vsliveshare): Real-time collaborative development from the comfort of your favorite tools.
- `Wrap Console Log`: Wrap to console.log by word or selection.
- [`Wrap Console Log`](https://marketplace.visualstudio.com/items?itemName=midnightsyntax.vscode-wrap-console-log): Wrap to console.log by word or selection.
## My Settings