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- a-b
- alias - define or display aliases
- ar - archive maintainer
- asa - interpret carriage-control characters
- at - execute commands at a later time
- awk - pattern scanning and processing language
- basename - return non-directory portion of path name
- batch - execute commands at a later time
- bc - arbitrary-precision arithmetic language
- bg - run jobs in the background
- bs2cmd - execute BS2000 command (BS2000)
- bs2cp - copy POSIX/BS2000 files (BS2000)
- bs2do - calling BS2000 procedures from the POSIX shell (BS2000)
- bs2file - set BS2000 file attributes (BS2000)
- bs2lp - send files to a printer (BS2000)
- bs2pkey - set P-keys (BS2000)
- c
- cal - print calendar
- cancel - cancel line printer requests
- cat - concatenate and print files
- cd - change working directory
- chgrp - change file group ownership
- chmod - change file modes
- chown - change file ownership
- cksum - write file checksums and sizes
- cmp - compare two files
- command - execute a simple command
- comm - select or reject lines common to two files
- compress - compress files
- cp - copy files
- cpio - copy in and out
- crontab - schedule periodic background work
- csplit - split files based on context
- cut - cut out selected fields of each line of a file
- d
- e
- echo - write arguments to standard output
- ed - interactive line editor
- edt - screen-oriented editor EDT (BS2000)
- edtu - screen oriented editor in unicode mode
- egrep - search a file with an ERE pattern
- env - set environment for command execution
- eval - construct command by concatenating arguments
- ex - command and display editor
- exec - execute commands and open, close or copy file descriptors
- exit - cause the shell to exit
- expand - convert tabs to spaces
- export - set export attribute for variables
- expr - evaluate arguments as an expression
- f
- false - return false value
- fc - process command history list
- fg - run jobs in the foreground
- fgrep - search a file for a fixed-string pattern
- file - determine file type
- find - find files
- fold - filter for folding lines
- fsck - file system check
- fsexpand - expand existing file systems
- ftyp - define file processing mode (BS2000)
- funzip - filter for extracting from a ZIP archive in a pipe
- fuser - display file users
- g-i
- gencat - generate a formatted message catalog
- getconf - get configuration values
- getopts - parse utility options
- grep - search a file for a pattern
- hash - remember or report utility locations
- hd - hex dump
- head - copy the first part of files
- iconv - code set conversion
- id - return user identity
- info - online diagnostic tool
- ipcrm - remove inter-process communication facilities
- ipcs - inter-process communication status
- j-l
- jobs - display status of jobs in the current session
- join - relational database operator
- kill - terminate or signal processes
- last - display last logged in users
- let - integer arithmetic
- lex - generate programs for lexical tasks
- ln - link files
- locale - get locale-specific information
- localedef - define local environment
- logger - log messages
- logname - return user's login name
- logrotate - change logging files of the syslog daemon
- lp - send files to a printer
- lpstat - report line printer status information
- ls - list directory contents
- m-n
- mailx - interactive message processing system (mail extended)
- make - maintain, update and regenerate groups of programs
- man - display system documentation
- mesg - permit or deny messages
- mkdir - make directories
- mkfifo - make FIFO special files
- mkfs - make file system
- mknod - make an inode
- more - display files on a page-by-page basis
- mount - mount a file system
- mountall - mount file systems
- mv - move files
- newgrp - change to a new group
- nice - invoke a utility with an altered system scheduling priority
- nl - line numbering filter
- nm - write the name list of an object file
- nohup - invoke a utility immune to hangups
- o-p
- od - dump files in various formats
- paste - merge corresponding or subsequent lines of files
- patch - apply changes to files
- pathchk - check pathnames
- pax - portable archive interchange
- pdbl - set up and manage user-specific program cache
- ping - send echo requests to network hosts
- pkginfo - show information on software packages in POSIX
- posdbl - set up and manage global program cache
- pr - prepare files for printing
- print - write arguments to standard output
- printf - formatted output
- ps - report process status
- pwd - return working directory name
- r
- s
- sed - stream editor
- set - set or unset options and positional parameters
- sh - shell, the standard command language interpreter
- shift - shift positional parameters
- show_pubset_export - show file system affected by pubset export
- sleep - suspend execution for an interval
- sort - sort, merge or sequence check text files
- split - split a file into pieces
- start_bs2fsd - start copy daemons
- strings - find printable strings in files
- stty - check and change terminal options (set terminal type)
- su - substitute user ID
- sudo - execute a command as another user
- sudoers - default sudo security policy plugin
- sum - print checksum and block count of a file
- sync - flush system buffers
- t
- tabs - set terminal tabs
- tail - deliver the last part of a file
- talk - talk to another user
- tar - file archiver
- tee - join pipes and make copies of input
- test - evaluate expression
- time - time a simple command
- times - write process times
- touch - change file access and modification times
- tput - change terminal characteristics
- tr - translate characters
- trap - trap signals
- true - return true value
- tsort - topological sort
- tty - output path name of current terminal
- type - write a description of command type
- typeset - set attributes for variables
- u
- ulimit - set or report file size limit
- umask - get or set the file mode creation mask
- umount - unmount a file system
- umountall - unmount file systems
- unalias - remove alias definitions
- uname - return system name
- uncompress - expand compressed files
- unexpand - convert spaces to tabs
- uniq - report or filter out repeated lines in a file
- unset - unset values and attributes of variables and functions
- unzip - list, test and extract compressed files in a ZIP archive
- unzipsfx - self-extracting stub for prepending to ZIP archives
- usp - set POSIX control parameters dynamically
- uudecode - decode a binary file
- uuencode - encode a binary file
- uuname - list names of known systems
- v-z
- vi - screen oriented (visual) display editor
- visudo - edit the sudoers file
- wait - await process completion
- wc - word, line and byte or character count
- whence - query command type
- who - display who is on the system
- write - write to another user
- xargs - construct argument list(s) and execute command
- yacc - yet another compiler-compiler
- zcat - expand and concatenate compressed data
- zip - package and compress (archive) files
- zipcloak - encrypt entries in a zipfile
- zipgrep - search files in a ZIP archive for lines matching a pattern
- zipinfo - list detailed information about a ZIP archive
- zipnote - write the comments in zipfile to stdout, edit comments and rename files in zipfile
- zipsplit - split a zipfile into smaller zipfiles
- : - return true value
- . - execute commands in current environment
- [ ] - evaluate expression