02_terminal_cheat_sheet.md

Moving around

Command	Description	Common options
~> pwd	Print working directory
~> cd	Change directory
~> ls	List content	-a list all, -l long output
~> mkdir new_dir	Create new directory

Output

Command	Description	Common options
~> cat file ...	Concatenate and print
~> head file	Display top 10 lines
~> head file	Display last 10 lines
~> wc file	Count words	-c for bytes, -m for characters, -l for lines
~> echo sthg	Print in the terminal

Dealing with files

Command	Description	Common options
~> cp src dst	Copy content
~> mv src dst	Move content
~> rm file	Remove content	-r for directories
~> wget url	Download content
~> touch file	Edit timestamp of a file

Searching

Command	Description	Common options
~> find path -name "sthg"	Locate sthg in path
~> grep pattern src	Locate lines that contain pattern in src	-G to use regex, -R to look through all files of a directory recursively

Permissions and ownership

Command	Description	Common options
~> chmod permissions content	Change mode of content to permissions
~> chown user content	Change owner of content to user
~> sudo cmd	Gain root privileges to execute cmd

Redirections and pipes

Symbol	Description
> output	Redirect output
>> output	Redirect output in append mode
< input	Redirect input
2> error	Redirect errors
2>> error	Redirect errors in append mode
2>&1	Merge errors with standard input
2> /dev/null	Discard errors
|	Use output of left-side as input to right-side
;	Execute right-side after left-side