| mail, Mail | send and receive mail |
| as | assembler |
| pcc, cc | C compiler |
| chfn | change full name of user |
| chsh | change default login shell |
| clear | clear terminal screen |
| csh | a shell (command interpreter) with C-like syntax |
| ctags | create a tags file |
| diff | differential file and directory comparator |
| error | analyze and disperse compiler error messages |
| ex | text editor |
| finger | user information lookup program |
| ld | loader |
| leave | remind you when you have to leave |
| ls | list contents of directory |
| man | find manual information by keywords; print out the manual |
| page, more | file perusal filter for crt viewing |
| msgs | system messages and junk mail program |
| nm | print name list |
| passwd | change login password |
| ps | process status |
| script | make typescript of terminal session |
| setquot | make block quota on a directory |
| strip | remove symbols and relocation bits |
| stty | set terminal options |
| tset | set terminal modes |
| ul | do underlining |
| users | compact list of users who are on the system |
| uuencode | encode a binary file for transmission via mail uudecode − decode a uuencode file |
| uurec | receive processed news articles via mail |
| uusend | send a file to a remote host |
| vmstat | report virtual memory statistics |
| Vsh, vsh | visual shell |
| w | who is on and what they are doing uptime − how long the system has been up and load average |
| wc | word count |
| whereis | locate source, binary, and or manual for program |
| curses | screen functions with “optimal” cursor motion |
| getpwuid, getpwnam, getpwmap, setpwent, endpwent, getpwent | get password file entry |
| loadav | get load average |
| re_comp, re_exec, regex | regular expression handler |
| tgetent, tgetnum, tgetflag, tgetstr, tgoto, tputs, termlib | terminal independent operation routines |
| apropos | locate commands by keyword lookup |
| astags | compute a tags file for an assembler program |
| chessclock | a poor mans chess clock |
| ckdir | checksum the files in a directory to guard against/check for corruption |
| clock | continually print the time of the day |
| cxref | a simple C routine referencing program |
| daytime | give the time to human-reasonable accuracy |
| double | double strike output for faint ribbons |
| edit | text editor (variant of the ex editor for new or casual users) |
| ex | text editor |
| expand | expand tabs to spaces |
| eyacc | modified yacc allowing much improved error recovery |
| fleece | look for files in home directories |
| fmt | simple text formatter |
| fold | fold long lines for finite width output device |
| freopen, fopen | open a stream |
| from | who is my mail from? |
| getNAME | get NAME sections from manual source for whatis/apropos data base |
| getchar, fgetc, getw, getc | get character or word from stream |
| gets | get a string from standard input |
| grep | search a file for a pattern |
| head | give first few lines of a stream |
| iul | indicate underlining |
| last | indicate last logins of users and teletypes |
| libNS | modified standard i/o library allowing concurrent read/write to a stream |
| libretro | library to fit version 7 programs on version 6 systems |
| lock | reserve a terminal |
| makewhatis | remake the data base for the whatis and apropos commands |
| mkstr | create an error message file by massaging C source |
| net | execute a command on a remote machine |
| netcp | remote copy of files through the net |
| netlog | print the last few lines of the network log file |
| netlpr | use a remote lineprinter through the net |
| netmail | read mail on a remote machine over the network |
| netq | print contents of network queue |
| netrm | remove a command from the network queue |
| num | number lines |
| pi | Pascal interpreter code translator |
| pix | Pascal interpreter and executor |
| print | pr to the line printer |
| printenv | print out the environment |
| px | Pascal interpreter |
| pxp | Pascal execution profiler |
| pxref | Pascal cross-reference program |
| reset | reset the teletype bits to a sensible state |
| see | see what a file has in it |
| soelim | eliminate source directives from a nroff or troff stream |
| ssp | limit to single spacing |
| strings | find the printable strings in a object, or other binary, file |
| tod | print out a message germane to the current time of day |
| tra | copy out a file as it grows |
| untmp | clean files out of /tmp |
| vi | screen oriented (visual) display editor based on ex |
| whatis | describe what a command is |
| whoami | print effective current user id |
| xstr | extract strings from C programs to implement shared strings |