most used linux commands

If you are a linux user, you will always have to work with commands, even if you have an advanced linux distribution. Every linux user may have to open the terminal screen and write a command and we will make a list of the general commands you will use in linux;

Terminal commands :
clear	Clear the terminal screen
history	Display recently used commands.
!	Repeat a recently used command.
man	Display the manual for a terminal program
whatis	Display a brief description of a terminal program.
alias	Create a shortcut to a command or, when combined with the cd command, directory
exit	close the terminal

File Management :
cd	Change directory.
pwd	Display current directory.
ls	Display a list of files in the current directory.
cp	Makes a copy of a file.
mv	Move a file
rm	Remove a file or set of files.
stat	Display when a file was last accessed, modified, or changed.
rmdir	Delete file or files.
mkdir	Create a directory.
rename	Change the name of a file
find	Search a specific directory
locate	Search for files or directories.
grep	Search a specific file
mount	Attach a separate filesystem
unmount	Detach a separate filesystem from your system
cat	Display the contents of a text file.
chmod	Modify the read, write, and execute permissions file.
chown	Change the user or group that owns a file.

User commands :
su	Switch user. (Root or Admin)
whoami	Displays the current user name.
id	Display current user and group.
passwd	Create or update a user's password.

SA System Administrotor :
uname	Displays core system information such as kernel version, hardware, and operating system.
sudo	Administrator priveleges
apt	Programs for installing software and updates.
jobs	Display the status of all current jobs.
bg	Send a job to the background.
fg	Send a job to the foreground.
kill	End a process according to its process ID
killall	End all processes whose names match your query.
ps	Display a list of running processes.
top	Displays a list of running processes, sorted by how much CPU each uses.
uptime	Displays time since last boot.
free	Displays how much RAM is used and free on your system.
whereis	Finds the executable file for a program.
df	Displays how much disk space is used and free on your system.

Network commands :
ip	Displays you IP address, network interfaces, bandwidth usage, and more.
ping	Send or receive data from another computer on a network.
dig	Look up a domain's DNS address
wget	Download a file.

Miscellaneous commands :
Echo	Display a line of text.
factor	Displays possible factors of a decimal number.
look	Look up a word in the dictionary.
expr	Solve math equations.