history

lists the commands you used after opening your current terminal, by ordered list

!!

re-runs the command before it in the history order

a2query

shows which configuration files, sites and modules are enabled in Apache HTTP server by the module,config, site -enabled folders

aa-status

shows the status of AppArmor profiles(what security privileges did AppArmor gave to each application)_{(i think)}

aapt

for manipulating AndroidSDK

aabr

makes abbreviations in fish terminal

abduco

can:

• make a new session
• leave it running in the background or close it then come back to it
• merge sessions to not have multiple terminals on your screen

ac

returns the log in time of users

ack

finds patterns and things you specify in a certain file(s), makes searching for stuff in files easier

acm

a pilot flying game

how to move a file?

mv [file name] [wanted directory]

how to copy& paste a file?

cp [file name] [wanted directory]

how to make a directory

mkdir [name]

how to remove a directory

rm [directory name]

how to change user password

passwd

how to go to a directory thats a child of another parent directory?​_

cd [path]

how to find a file in your computer

locate [file name]

how to put your written code in a file

[your code] > [fileName.file extention]

chmod

changes the read, write, execute permissions of a file for group, owner and others

Whats the difference between Chown & Chgrp

Chown: changes the user ownership of a file

Chgrp: changes the Group ownership of a file

chroot

Change the root directory

chfn

Changes user information

chsh

changes the default shell

chvt

switches between virtual environments