Basic Linux Commands
ls Used to display the Lists of files and directory without information.
ls –l Used to display the list of files and directory with complete information such
as permissions, owner, time etc.
rm data1 Deletes the file data1 in the current directory.
rm –rf dirname Used to remove a directory including subdirectory and files.
rmdir temp Removes the directory temp.
mkdir temp Creates the directory temp.
cd Changes directories.
cd .. To exit from current directory.
pwd (Print Working Directory) Shows what directory (folder) you are in.
man This command is used to display the manual about any command.
man pwd You will see the manual for the pwd command.
info This command is used to display the information about any command.
info pwd You will see the information for the pwd command.
clear Clears the terminal screen.
cat Used to view the contents of a file and it is also used for creating a new file
with some contents
cat <file name> To view file contents
cat > newfilename Press enter,then you can write something in the file and then to save the file
contents press ctrl+d then enter.
cp Used to copy something in a destination file or directory.
cp sourcepath destinationpath
mv Used to move one file or directory from one place to another place.
mv source destination
who By this command you can see the user name and their ip addresses, who have
loged in on your server
who am i This command shows you the logged in terminal number and user name and
more detailed information
useradd username Used to create a new user.
passwd Used to give a password of a user.
userdel username Used to remove a user from linux.
groupadd grpname Used to add a new group.
groupdel grpname Used to delete a group.
cal Used to display the calendar of current month and year.
cal month year Used to display the calendar of given month and year.
cal year Used to display the calendar of complete year.
