POSIX — Utilities

• admin(1) — create and administer SCCS files (DEVELOPMENT)
• alias(1) — define or display aliases
• ar(1) — create and maintain library archives
• asa(1) — interpret carriage-control characters
• at(1) — execute commands at a later time
• awk(1) — pattern scanning and processing language
• basename(1) — return non-directory portion of a pathname
• batch(1) — schedule commands to be executed in a batch queue
• bc(1) — arbitrary-precision arithmetic language
• bg(1) — run jobs in the background
• break(1) — exit from for, while, or until loop
• c99(1) — compile standard C programs
• cal(1) — print a calendar
• cat(1) — concatenate and print files
• cd(1) — change the working directory
• cflow(1) — generate a C-language flowgraph (DEVELOPMENT)
• chgrp(1) — change the file group ownership
• chmod(1) — change the file modes
• chown(1) — change the file ownership
• cksum(1) — write file checksums and sizes
• cmp(1) — compare two files
• colon(1) — null utility
• comm(1) — select or reject lines common to two files
• command(1) — execute a simple command
• compress(1) — compress data
• continue(1) — continue for, while, or until loop
• cp(1) — copy files
• crontab(1) — schedule periodic background work
• csplit(1) — split files based on context
• ctags(1) — create a tags file (DEVELOPMENT, FORTRAN)
• cut(1) — cut out selected fields of each line of a file
• cxref(1) — generate a C-language program cross-reference table (DEVELOPMENT)
• date(1) — write the date and time
• dd(1) — convert and copy a file
• delta(1) — make a delta (change) to an SCCS file (DEVELOPMENT)
• df(1) — report free disk space
• diff(1) — compare two files
• dirname(1) — return the directory portion of a pathname
• dot(1) — execute commands in the current environment
• du(1) — estimate file space usage
• echo(1) — write arguments to standard output
• ed(1) — edit text
• env(1) — set the environment for command invocation
• eval(1) — construct command by concatenating arguments
• ex(1) — text editor
• exec(1) — execute commands and open, close, or copy file descriptors
• exit(1) — cause the shell to exit
• expand(1) — convert tabs to spaces
• export(1) — set the export attribute for variables
• expr(1) — evaluate arguments as an expression
• false(1) — return false value
• fc(1) — process the command history list
• fg(1) — run jobs in the foreground
• file(1) — determine file type
• find(1) — find files
• fold(1) — filter for folding lines
• fort77(1) — FORTRAN compiler (FORTRAN)
• fuser(1) — list process IDs of all processes that have one or more files open
• gencat(1) — generate a formatted message catalog
• get(1) — get a version of an SCCS file (DEVELOPMENT)
• getconf(1) — get configuration values
• getopts(1) — parse utility options
• grep(1) — search a file for a pattern
• hash(1) — remember or report utility locations
• head(1) — copy the first part of files
• iconv(1) — codeset conversion
• id(1) — return user identity
• ipcrm(1) — remove an XSI message queue, semaphore set, or shared memory segment identifier
• ipcs(1) — report XSI interprocess communication facilities status
• jobs(1) — display status of jobs in the current session
• join(1) — relational database operator
• kill(1) — terminate or signal processes
• lex(1) — generate programs for lexical tasks (DEVELOPMENT)
• link(1) — call link() function
• ln(1) — link files
• locale(1) — get locale-specific information
• localedef(1) — define locale environment
• logger(1) — log messages
• logname(1) — return the user's login name
• lp(1) — send files to a printer
• ls(1) — list directory contents
• m4(1) — macro processor
• mailx(1) — process messages
• make(1) — maintain, update, and regenerate groups of programs (DEVELOPMENT)
• man(1) — display system documentation
• mesg(1) — permit or deny messages
• mkdir(1) — make directories
• mkfifo(1) — make FIFO special files
• more(1) — display files on a page-by-page basis
• mv(1) — move files
• newgrp(1) — change to a new group
• nice(1) — invoke a utility with an altered nice value
• nl(1) — line numbering filter
• nm(1) — write the name list of an object file (DEVELOPMENT)
• nohup(1) — invoke a utility immune to hangups
• od(1) — dump files in various formats
• paste(1) — merge corresponding or subsequent lines of files
• patch(1) — apply changes to files
• pathchk(1) — check pathnames
• pax(1) — portable archive interchange
• pr(1) — print files
• printf(1) — write formatted output
• prs(1) — print an SCCS file (DEVELOPMENT)
• ps(1) — report process status
• pwd(1) — return working directory name
• qalter(1) — alter batch job
• qdel(1) — delete batch jobs
• qhold(1) — hold batch jobs
• qmove(1) — move batch jobs
• qmsg(1) — send message to batch jobs
• qrerun(1) — rerun batch jobs
• qrls(1) — release batch jobs
• qselect(1) — select batch jobs
• qsig(1) — signal batch jobs
• qstat(1) — show status of batch jobs
• qsub(1) — submit a script
• read(1) — read from standard input into shell variables
• readonly(1) — set the readonly attribute for variables
• renice(1) — set nice values of running processes
• return(1) — return from a function or dot script
• rm(1) — remove directory entries
• rmdel(1) — remove a delta from an SCCS file (DEVELOPMENT)
• rmdir(1) — remove directories
• sact(1) — print current SCCS file-editing activity (DEVELOPMENT)
• sccs(1) — front end for the SCCS subsystem (DEVELOPMENT)
• sed(1) — stream editor
• set(1) — set or unset options and positional parameters
• sh(1) — shell, the standard command language interpreter
• shift(1) — shift positional parameters
• sleep(1) — suspend execution for an interval
• sort(1) — sort, merge, or sequence check text files
• split(1) — split a file into pieces
• strings(1) — find printable strings in files
• strip(1) — remove unnecessary information from strippable files (DEVELOPMENT)
• stty(1) — set the options for a terminal
• tabs(1) — set terminal tabs
• tail(1) — copy the last part of a file
• talk(1) — talk to another user
• tee(1) — duplicate standard input
• test(1) — evaluate expression
• time(1) — time a simple command
• times(1) — write process times
• touch(1) — change file access and modification times
• tput(1) — change terminal characteristics
• tr(1) — translate characters
• trap(1) — trap signals
• true(1) — return true value
• tsort(1) — topological sort
• tty(1) — return user's terminal name
• type(1) — write a description of command type
• ulimit(1) — set or report file size limit
• umask(1) — get or set the file mode creation mask
• unalias(1) — remove alias definitions
• uname(1) — return system name
• uncompress(1) — expand compressed data
• unexpand(1) — convert spaces to tabs
• unget(1) — undo a previous get of an SCCS file (DEVELOPMENT)
• uniq(1) — report or filter out repeated lines in a file
• unlink(1) — call the unlink() function
• unset(1) — unset values and attributes of variables and functions
• uucp(1) — system-to-system copy
• uudecode(1) — decode a binary file
• uuencode(1) — encode a binary file
• uustat(1) — uucp status enquiry and job control
• uux(1) — remote command execution
• val(1) — validate SCCS files (DEVELOPMENT)
• vi(1) — screen-oriented (visual) display editor
• wait(1) — await process completion
• wc(1) — word, line, and byte or character count
• what(1) — identify SCCS files (DEVELOPMENT)
• who(1) — display who is on the system
• write(1) — write to another user
• xargs(1) — construct argument lists and invoke utility
• yacc(1) — yet another compiler compiler (DEVELOPMENT)
• zcat(1) — expand and concatenate data