Friday, December 3, 2010

Top 10 commands a user must Know

1. su
 The command su gives the user full access as an administrator  and can install and update system.

2. cp
The command cp is used to copy files and folders.If the folders have multiple files;the argument r is to be used.
usage:
cp  /home/xy  /opt  -r

3.mv
This command is used to move the files,equivalent of the cut command in windows

4.rm
This command is used to delete the files

5.cat
this command is used to view the configuration files in the command line.

6.halt
This command  is used to shutdown the  system

7.reboot
This command is used to restart the system.

8.kill
This command is used to stop the process.

9.ps
  ps displays information about a selection of the active processes
usage:to see the every process
ps -e

10.man
This command is  the system help utility and gives  reference manuals on all process and applications.