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Merge pull request #217 from DeadlyChambers/patch-1

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Julien Le Coupanec 2021-07-11 22:38:35 +02:00 committed by GitHub
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languages/bash.sh
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@ -117,6 +117,9 @@ grep -r <pattern> <dir> # search recursively for pattern in directory
head -n file_name | tail +n # Print nth line from file. 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. head -y lines.txt | tail +x # want to display all the lines from x to y. This includes the xth and yth lines.
sed 's/<pattern>/<replacement>/g' <filename> # replace pattern in file with replacement value to std output the character after s (/) is the delimeter
sed -i 's/<pattern>/<replacement>/g' <filename> # replace pattern in file with replacement value in place
echo "this" | sed 's/is/at/g' # replace pattern from input stream with replacement value
############################################################################## ##############################################################################
# DIRECTORY COMMANDS # DIRECTORY COMMANDS
@ -145,6 +148,9 @@ ssh -p <port> user@host # connects to host on specified port as user
ssh-copy-id user@host # adds your ssh key to host for user to enable a keyed or passwordless login ssh-copy-id user@host # adds your ssh key to host for user to enable a keyed or passwordless login
whoami # returns your username whoami # returns your username
su <user> # switch to a different user
su - # switch to root, likely needs to be sudo su -
sudo <command> # execute command as the root user
passwd # lets you change your password passwd # lets you change your password
quota -v # shows what your disk quota is quota -v # shows what your disk quota is
date # shows the current date and time date # shows the current date and time
@ -154,6 +160,8 @@ w # displays whois online
finger <user> # displays information about user finger <user> # displays information about user
uname -a # shows kernel information uname -a # shows kernel information
man <command> # shows the manual for specified command man <command> # shows the manual for specified command
info <command> # shows another documentation system for the specific command
help # shows documentation about built-in commands and functions
df # shows disk usage df # shows disk usage
du <filename> # shows the disk usage of the files and directories in filename (du -s give only a total) du <filename> # shows the disk usage of the files and directories in filename (du -s give only a total)
last <yourUsername> # lists your last logins last <yourUsername> # lists your last logins