| Command | Description |
| # | root user prompt |
| $ | user working prompt |
| $logname | Displays current user name |
| $pwd | Present working directory |
| $date | Display current date & time |
| $cal | Display current month calendar |
| $cal 2022 | Particular year total months |
| $cal 02 2022 | 2022 year 02nd month calendar |
| $who | To display the information about all the users who have logged into the system |
| $whoami | It display current user name |
| $finger | It displays complete information about all the users who are logged in |
| $uptime | How long server up & running, how many users connected and load avg time |
| $which or $whereis |
Given commend location Example: which date |
| $tty | Terminal position |
| $df | Display disk free size |
| $du | Disk usage information |
| $clear | To clear the screen |