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| halt | Stops the processor. |
| hangman | Starts the hangman word-guessing game. |
| hash | Remembers or reports command path names. |
| head | Displays the first few lines or bytes of a file or files. |
| help | Provides information for new users. |
| history | Displays the history of an INed structured file. |
| host | Resolves a host name into an Internet address or an Internet address into a host name. |
| hostent | Directly manipulates address-mapping entries in the system configuration database. |
| hostid | Sets or displays the identifier of the current local host. |
| hostname | Sets or displays the name of the current host system. |
| hp | Handles special functions for the HP2640- and HP2621- series terminals. |
| hplj | Postprocesses the troff command output for the HP LaserJet Series printers. |
| hps_dump | Dumps contents of Network Terminal Accelerator (NTX) adapter memory to a host file. This command applies to AIX Version 4.2 or later. |
| htable | Converts host files to the format used by network library routines. |
| hty_load | Displays or downloads Network Terminal Accelerator (NTX) adapter configurations. |
| hyphen | Finds hyphenated words. |
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