| apropos | |
| Locates commands by keyword lookup. | |
| cal | |
| Displays a calendar. | |
| calendar | |
| Writes reminder messages to standard output. | |
| factor | |
| Factors a number. | |
| help | |
| Provides help information for new users. | |
| learn | |
| Provides computer-aided instruction courses and practice for using files, editors, macros, and other features. | |
| leave | |
| Provides reminder messages. | |
| units | |
| Converts units in one measure to equivalent units in another measure. | |
| write | |
| Sends messages to other users on the system. | |
User Environment and System Information