| cd | change directory |
| ls | list directory content |
| mkdir, rmdir | make and remove (an empty) directory |
| rm | remove a file |
| more | display file contents |
| man ? | display manual page for ? |
| Examples: | |
| cd | return to home directory |
| cd /usr/esru/esp-r | go to directory containing the standard ESP-r distribution |
| cd .. | go up one directory |
| ls -l | show file dates, sizes and permissions |
| rm -r xyz | remove directory xyz and all its files |
| more abc | display contents of file abc |
| man ls | display manual page for the ls command |