| Command | Description |
| at | Execute commands at a specified time |
| awk | A pattern scanning and processing language |
| bdiff | Compares two large files |
| calendar | Daily events reminder service |
| cat | Concatenate or display files |
| cd | Change to another directory |
| chmod | Change file protection mode |
| cmp | Print lines common in two sorted files |
| cp | Copy contents of files |
| cpio | Copy files in and out |
| crontab | System Scheduler |
| cut | Cut fields from a file |
| date | Displays system date and time |
| dd | convert and copy a file |
| df | Displays number of free disk blocks |
| diff | Compares two files on a line-by-line basis |
| dircmp | Compares directories and reports differences |
| du | Displays amount of disk usage |
| echo | Print a line of text or variables |
| eqn | Text processing for mathematical expressions |
| file | Determines file type |
| find | Searches for files in file hierarchy |
| finger | List information about users |
| grep | Searches files for a pattern |
| join | Joins fields from two sorted files |
| kill | Terminates a process/program |
| ln | Link two files |
| lp | Print files on the line printer |
| ls | List a set of files |
| mailx | Send and receive electronic mail |
| make | Creates programs using description file |
| man | Print on-line manual |
| mesg | Permit or deny interactive communications |
| mkdir | Make or Create new directories |
| mm | Memorandum macros document preparation |
| Command | Description |
| more | Display file a page at a time |
| mv | Move or Rename files |
| nice | Changes a commands priority |
| nl | Number lines in a file |
| nohup | Runs a command immune from disconnects |
| nroff | Document preparation |
| od | Display files in Octal, Hex or ASCII |
| passwd | Change users password |
| paste | Merges lines of files |
| pr | Print file in a format |
| ps | Displays currently active processes |
| pwd | Print working directory |
| rm | Remove files or directories containing files |
| rmdir | Remove directories |
| set | Force values into position parameters |
| sort | Sort files |
| spell | Spell Checker |
| split | Split a file into pieces |
| stty | Setting characteristics of terminal |
| tail | Prints lines of a growing file |
| tee | Splits output to a terminal and pipeline |
| time | Times a command |
| tr | Substitutes characters from string1 to string2 |
| tty | Display current tty device |
| umask | Sets default file mode at creation |
| uname | Displays information about system |
| uniq | Removes repeated lines of a sorted file |
| vi | UNIX visual full screen editor |
| wc | Counts characters, words, and lines in a file |
| who | Identifies active users |
| write | Allows interactive communications between users |