diff --git a/.gitignore b/.gitignore index 54166b9..83f1989 100644 --- a/.gitignore +++ b/.gitignore @@ -3,3 +3,6 @@ # Editors .vscode/ + +# Vim +*.swp diff --git a/backend/django.py b/backend/django.py index 12a33ee..f9347ea 100644 --- a/backend/django.py +++ b/backend/django.py @@ -61,7 +61,7 @@ django-admin help # display usage information and a list django-admin makemigrations # create new migrations to the database based on the changes detected in the models django-admin migrate # synchronize the database state with your current state project models and migrations django-admin remove_stale_contenttypes # Deletes stale content types (from deleted models) in your database.y. -django-admin runserver # start the development webserver at 127.0.0.1 with the port 8000 +django-admin runserver # start the development webserver at 127.0.0.1 with the port default 8000 django-admin sendtestemail # Sends a test email to the email addresses specified as arguments. django-admin shell # Runs a Python interactive interpreter. Tries to use IPython or bpython, if one of them is available. Any standard input is executed as code. django-admin showmigrations # Shows all available migrations for the current project. diff --git a/databases/redis.sh b/databases/redis.sh index 5665af4..9fbce26 100644 --- a/databases/redis.sh +++ b/databases/redis.sh @@ -115,7 +115,7 @@ HINCRBY key field increment # increment value in hash by X HDEL key field [field ...] # delete one or more hash fields HEXISTS key field # determine if a hash field exists HKEYS key # get all the fields in a hash -HLEN key # get all the fields in a hash +HLEN key # get the number of fields in a hash HSTRLEN key field # get the length of the value of a hash field HVALS key # get all the values in a hash diff --git a/frontend/html5.html b/frontend/html5.html index e40173c..c9a0154 100644 --- a/frontend/html5.html +++ b/frontend/html5.html @@ -10,28 +10,28 @@ - + - - - + + + -

...
-

-
- -
-
+

...
+

+
+ +
+
@@ -39,10 +39,10 @@ and and - + 
                                       
 
                         
-                                     
+                                     
 
                               
                                      
 
@@ -54,13 +54,13 @@
            
                                
                               
-                 
+                 
 
 
 
 
 
-text                        
+text                        
 
 
 
@@ -70,7 +70,7 @@
                                          
 
  •                                          
 
                                             
-
                                             
+
                                             
 
                                             
 
 
@@ -80,12 +80,12 @@
 
                            
 
 
-method="somefunction()"                           
+method="somefunction()"                           
 enctype=""                                        
 autocomplete=""                                   
 novalidate                                        
 accept-charset=""                                 
-target=""                                         
+target=""                                         
                             
 
             
                             
@@ -105,16 +105,16 @@ step=""                                           
 
 
-                         
+                         
 
 
 name=""                                           
-size=""                                           
+size=""                                           
 multiple                                          
 required                                          
-autofocus                                         
+autofocus                                         
                              
-                        
+                        
                                  
 
 
@@ -136,17 +136,17 @@ autofocus                                         
 
 
-                            
+                         
 
 
 type=""                                           
-height=""                                         
+height=""                                         
 width=""                                          
 usemap=""                                         
 
                               
                             
-scr=""                                            
+src=""                                            
 width=""                                          
 
 
@@ -155,7 +155,7 @@ width=""                                          
 
                                     
-
                                          
+
                                          
 
                                   
                                    
 
                                   
@@ -177,7 +177,7 @@ width=""                                          
 
 
-
+
 
 
 " " Quotation Marks - "
diff --git a/languages/XML.md b/languages/XML.md
new file mode 100644
index 0000000..adbac30
--- /dev/null
+++ b/languages/XML.md
@@ -0,0 +1,62 @@
+> announcement: this doc is a quiz-, interview-oriented cheatsheet, which desigend for those who want to have an overview of XML, when preparing for interviews.
+
+# What is XML
+XML stands for eXtensible Markup Language, XML was designed to store and transport data. XML is often used for distributing data over the Internet(especial in web development).
+
+# Then how can XML store data
+XML uses a DTD to describe the data.
+
+# The relation with HTML
+* XML: is used to store or transport data.
+   So the XML is a **Complement** to HTML.
+* HTML: is used to format and display the same data.
+
+   
+XML does not carry any information about how to be displayed. The same XML data can be used in many different presentation scenarios.
+Because of this, with XML, there is a full separation between data and presentation.
+
+# What is XML Schema/DTD
+The purpose of a DTD is to define the structure of an XML document. It defines the structure with a list of legal elements:
+
+
+# When Not to Use a XML DTD/Sschema
+XML does not require a DTD/Schema.
+
+When you are experimenting with XML, or when you are working with small XML files, creating DTDs may be a waste of time.
+
+If you develop applications, wait until the specification is stable before you add a document definition. Otherwise, your software might stop working because of validation errors.
+
+
+# XML Syntax
+The XML language has no predefined tags, but the syntax is rather logic and easy to learn. XML documents must contain one root element that is the parent of all other elements.
+
+```
+
+  
+    Harry Potter
+    J K. Rowling
+    2005
+    29.99
+  
+  
+    Learning XML
+    Erik T. Ray
+    2003
+    39.95
+  
+
+```
+
+1. XML Tags are Case Sensitive
+2. All XML Elements Must Have a Closeing Tag
+
+```
+
    This is a paragraph.
    
+
      
+```
+3. XML Attribute Values Must Always be Quoted
+4. Pay attention to the name rules.
+
+# Reference
+1. (W3School) [https://www.w3schools.com/xml/]
+2. [cheat sheet in German](https://www.i-d-e.de/wp-content/uploads/2015/02/ide-xml-kurzreferenz.pdf)
diff --git a/languages/bash.sh b/languages/bash.sh
index 0fe147c..780e98c 100644
--- a/languages/bash.sh
+++ b/languages/bash.sh
@@ -1,9 +1,8 @@
 #!/bin/bash
 ##############################################################################
-# SHORTCUTS
+# SHORTCUTS and HISTORY
 ##############################################################################
 
-
 CTRL+A  # move to beginning of line
 CTRL+B  # moves backward one character
 CTRL+C  # halts the current command
@@ -11,6 +10,7 @@ CTRL+D  # deletes one character backward or logs out of current session, similar
 CTRL+E  # moves to end of line
 CTRL+F  # moves forward one character
 CTRL+G  # aborts the current editing command and ring the terminal bell
+CTRL+H  # deletes one character under cursor (same as DELETE)
 CTRL+J  # same as RETURN
 CTRL+K  # deletes (kill) forward to end of line
 CTRL+L  # clears screen and redisplay the line
@@ -31,10 +31,17 @@ CTRL+Z  # stops the current command, resume with fg in the foreground or bg in t
 ALT+B   # moves backward one word
 ALT+D   # deletes next word
 ALT+F   # moves forward one word
+ALT+H   # deletes one character backward
 
-DELETE  # deletes one character backward
-!!      # repeats the last command
-exit    # logs out of current session
+BACKSPACE  # deletes one character backward
+DELETE     # deletes one character under cursor
+
+history   # shows command line history
+!!        # repeats the last command
+!      # refers to command line 'n'
+! # refers to command starting with 'string'
+
+exit      # logs out of current session
 
 
 ##############################################################################
@@ -47,7 +54,7 @@ echo $SHELL         # displays the shell you're using
 echo $BASH_VERSION  # displays bash version
 
 bash                # if you want to use bash (type exit to go back to your previously opened shell)
-whereis bash        # finds out where bash is on your system
+whereis bash        # locates the binary, source and manual-page for a command
 which bash          # finds out which program is executed as 'bash' (default: /bin/bash, can change across environments)
 
 clear               # clears content on window (hide displayed lines)
diff --git a/tools/vim.txt b/tools/vim.txt
index 5efe85e..2a55240 100644
--- a/tools/vim.txt
+++ b/tools/vim.txt
@@ -232,6 +232,8 @@ n                           repeat search in same direction
 N                           repeat search in opposite direction
 *                           search forward, word under cursor
 #                           search backward, word under cursor
+set ic                      ignore case: turn on
+set noic                    ignore case: turn off
 :%s/old/new/g               replace all old with new throughout file
 :%s/old/new/gc              replace all old with new throughout file with confirmation
 :argdo %s/old/new/gc | wq   open multiple files and run this command to replace old 
@@ -251,6 +253,8 @@ N                           repeat search in opposite direction
 :bd                 delete a buffer (close a file)
 :b1                 show buffer 1
 :b vimrc            show buffer whose filename begins with "vimrc"
+:bufdo     run 'command(s)' in all buffers
+:[range]bufdo  run 'command(s)' for buffers in 'range'
 
 
 ##############################################################################