| commande | description |
| pwd | print working directory |
| cd | change directory |
| mkdir | make directory |
| rmdir | remove directory |
| ls | list directory |
| mv | move file |
| cp | copy file |
| file | type of file |
| ln | link files |
| touch | touch date of file |
| find | find file in directories |
| chmod | change mode of file |
| cat | show file |
| more | browser |
| head | head of file |
| tail | tail of file |
| commande | description |
| tr | translate characters |
| sed | stream editor |
| grep | grasp lines |
| cut | select fields |
| paste | paste fields |
| uniq | uniq and repeated lines |
| tee | copy stream in file |
| sort | sort lines |
| join | join files |
| comm | lines in common |
| diff | differences between files |
| cmp | compare files |
| look | find lines in a sorted file |
| commande | description |
| man | unix manual on line |
| expr | computes an expression |
| sh | Bourne shell |
| ps | processes list |
| kill | kill process |
| commande | description |
| if | if clause |
| for | for loop |
| case | switch |
| while | while loop |
| test | condition for if and while |
| getopts | get options |
| shift | shift arguments |
| echo | echo |
| read | read one line |
| exit | exit from shell |
| eval | eval and execute |
| break | exit from loop |
| set | set shell parameters |