Lab 4

Command chmod:
changes the mode or permissions of a file or directory

Command su:
allows you to log in as another user

Command sudo:
allows you to execute commands as a different user

Command chown:
is used to change the owner of a file

Command passwd:
is used to change the password

Command ps:
used to view a snapshot of the process

Command kill:
used to remove a process

Command printenv:
displays a list of variables