Basic Commands in all Linux O/s
        Command      Use                      Date      To display date & time ( Which is set on the computer )         date –set “13:19:30 11 aug   2018”      To edit (update) time & date in computer         Cal      To view calendar of the current month (1 tp 9999) years         Clear      To clear screen ( ctrl +l)         init 0      Shutdown         init 6      Restart         hostname      To know host name of computer   (localhost.local domain )- By default         Pwd      Present Working Directory – To know the location of particular   directory         cd      To change the directory         Ls      To List the sub files and folder