| cat | concatenate (combine) two or more files |
| cd | change to another directory |
| chmod | change mode (security permissions) of file or directory |
| ugo+-rwx | user (owner), group, other (world), add, remove, read, write, execute |
| cp | copy file |
| -r | copy directory tree |
| df | show disk free information |
| find | find files in a directory tree |
| finger | display user information |
| grep | list text lines containing particular characters |
| groups | show your security group memberships |
| kill | kill process |
| -9 | kill process immediately |
| lpr | send to printer |
| -P | send to another printer |
| lpq | show status of print queue |
| -P | show print jobs in a different print queue |
| lprm | remove print job from printer |
| -P | remove from a different print queue |
| ls | list contents of current directory |
| -l | long (detailed) listing |
| man | display portion of online Unix manual |
| -k | display command descriptions relating to subject keyword |
| mkdir | make new directory |
| more | display contents of file |
| mv | move or rename file or directory |
| ps aux | list status of all processes (running programs) |
| pwd | print working (current) directory |
| rm | remove file |
| -r | remove directory tree |
| rmdir | remove an empty directory |
| |
| .. | parent directory |
| . | current directory |
| * | wildcard representing any combination of characters |
| ? | wildcard representing exactly one character |
| ~ | your home directory |
| ~userid | userid's home directory |
| > | send output to file |
| >> | append (add) output to file |
| | | pipe output from one command as input to another |
| |
Where learning Linux is easy
