Unix (Mac & Linux & Windows Subsystem)

Command	Stands For	Description
`ls`	long listing	lists all files and directories in the present working directory
`ls -a`	long listing all	lists hidden files as well
`cd {dirname}`	change directory	to change to a particular directory
`cd ~`	change directory home	navigate to HOME directory
`cd ..`	change directory up	move one level up
`cat {filename}`	concatenate	displays the file content
`sudo`	superuser	allows regular users to run programs with the security privileges of the superuser or root
`mv {filename} {newfilename}`	move	renames the file to new filename
`clear`	clear	clears the terminal screen
`mkdir {dirname}`	make directory	create new directory in present working directory or at specified path
`rm {filename}`	remove	remove file with given filename
`touch {filename}.{ext}`	touch	create new empty file
`rmdir {dirname}`	remove directory	deletes a directory
`ssh {username}@{ip-address} or {hostname}`	secure shell	login into a remote Linux machine using SSH

Command Line (Windows)

Command	Stands For	Description
`dir`	directory	displays a list of files and sub-directories in a directory
`cd`	change directory	to change to a particular directory
`cd ~`	change directory home	navigate to HOME directory
`cd ..`	change directory up	move one level up
`cls`	clear	clear console screen
`type nul > {filename}.{ext}`	create file	creates an empty file
`copy {start-location} {end-location}`	copy	copies one or more files to another location
`del {filename}`	delete	delete one or more files
`find {string} {filename}`	find	searches for a text string in a file or files
`ipconfig`	ip configuration	displays all current tcp/ip network config values
`mkdir {dirname}`	make directory	creates a directory
`move {file-start} {file-end}`	move	moves on or more files from one directory to another directory
`rmdir {dir}`	remove directory	removes a directory
`ssh {username}@{ip-address} or {hostname}`	secure shell	login into a remote Linux machine using SSH