Useful Command Line Commands

Useful Command Line Commands

//***************** Useful Command  Line Commands ***********//

MAC PC

Ctrl(Control) + a 			--------	Move to the beggining of the current command
Ctrl(Control) + e			--------	Move to the end of the current command

echo ~						--------	print out our home directory
clear						--------	cleans out your terminal of all previous commands

pwd 						--------	prints out the current directory you are in

ls							--------	List all normal(non hidden) files in directory
ls -l						--------	List all normal(non hidden) files in directory with details
ls -a						--------	List all normal and hidden files in directory
ls -t						--------	List all normal(non hidden) files in directory but sort them by their modified time

cd ../ or cd ..				--------	Move up one directory
touch filename				--------	Creates a file with the name specified

mkdir directoryname			--------	Creates a directory with the name specified
cat filename        		--------	Writes out the contents of filename

ln -s originalFile newSymbolicLinkFile	----------	Creates a link from one file to another to act as a shortcut but with loose ties between

ln originalFile newSymbolicLinkFile 	----------	Creates a link from one file to another to act as a shortcut but with strong ties between


chmod (u/g/o)(+{r/w/x}/-{r/w/x}) filename --------	CHanges permission of a file for different user types( u=>user, g=>group, o=>others, r=>read, w=>write, x=>execute,  /=> combinable or can be used singularly singular)

Other Use: chmod (u)(+{r/w/x}/-{r/w/x}),(g/o)(+{r/w/x}/-{r/w/x})

chmod -R (u/g/o)(+{r/w/x}/-{r/w/x}) folder --------	CHanges permission of a folder for different user types( u=>user, g=>group, o=>others, r=>read, w=>write, x=>execute,  /=> combinable or can be used singularly singular), the r means go deep into subdirectories