| pwd | Show your current directory location. |
| ls | List directory contents |
| mkdir | Create or make new directories. |
| vi | Text editor. |
| scp | Securely Copy Files Using SCP, with examples. |
| cd | Directory navigation. |
| rm | Removing files and folders. |
| man | For reading system reference manuals. |
| zip | For packaging and compressing files. |
| tail | Used to display the tail end of a text file or piped data. |
| mkfs | Build a Linux file system. |
| dd | Convert and copy files. |
| mtr | Network diagnostic tool. |
| vmstat | Shows system processes, memory, interrupts, paging, block I/O, and CPU info. |
| uptime | Shows system processes, memory, interrupts, paging, block I/O, and CPU info. |