List of LINUX Basic commands
BC: Command line calculator
CAL: Display the calendar
CAT: To display the content on a standard output
CD: Change directory
CLEAR: To clear the terminal screen
CP: Copy file or directory
DATE: Prints the date and time
DF: To show the disk space usage
FREE: Displays the system memory
HEAD: To display the first 10 lines of a file
HISTORY: Command line history
HOSTNAME: Display the name of the current host
LAST: Display the last logged in users list
LOGNAME: Present current login name
LS: To list the directories
MKDIR: To create the directories if they do not already exist
MV: Move file or directory
PASSWD: To change the password
PWD: Print\Present working directory
RMDIR: To remove file or directory
SHUTDOWN: Reboot or turnoff machine
SU: Switch user accounts
TAIL: To display the last 10 lines of a file
USERADD: To create a new user account
USERDEL: To delete an existing user account
VI: editor to edit the text
WC: Word count
WHO: shows all usernames currently logged in
WHOAMI: Show the current user id and name
