section 1posix · User commands 💻

175 pages

A

admin(1posix)create and administer SCCS files (DEVELOPMENT)✨
alias(1posix)define or display aliases✨
ar(1posix)create and maintain library archives✨
asa(1posix)interpret carriage-control characters✨
at(1posix)execute commands at a later time✨
awk(1posix)pattern scanning and processing language✨

B

basename(1posix)return non-directory portion of a pathname✨
batch(1posix)schedule commands to be executed in a batch queue✨
bc(1posix)arbitrary-precision arithmetic language✨
bg(1posix)run jobs in the background✨
break(1posix)exit from for, while, or until loop✨

C

c99(1posix)compile standard C programs✨
cal(1posix)print a calendar✨
cat(1posix)concatenate and print files✨
cd(1posix)change the working directory✨
cflow(1posix)generate a C-language flowgraph (DEVELOPMENT)✨
chgrp(1posix)change the file group ownership✨
chmod(1posix)change the file modes✨
chown(1posix)change the file ownership✨
cksum(1posix)write file checksums and sizes✨
cmp(1posix)compare two files✨
colon(1posix)null utility✨
comm(1posix)select or reject lines common to two files✨
command(1posix)execute a simple command✨
compress(1posix)compress data✨
continue(1posix)continue for, while, or until loop✨
cp(1posix)copy files✨
crontab(1posix)schedule periodic background work✨
csplit(1posix)split files based on context✨
ctags(1posix)create a tags file (DEVELOPMENT, FORTRAN)✨
cut(1posix)cut out selected fields of each line of a file✨
cxref(1posix)generate a C-language program cross-reference table (DEVELOPMENT)✨

D

date(1posix)write the date and time✨
dd(1posix)convert and copy a file✨
delta(1posix)make a delta (change) to an SCCS file (DEVELOPMENT)✨
df(1posix)report free disk space✨
diff(1posix)compare two files✨
dirname(1posix)return the directory portion of a pathname✨
dot(1posix)execute commands in the current environment✨
du(1posix)estimate file space usage✨

E

echo(1posix)write arguments to standard output✨
ed(1posix)edit text✨
env(1posix)set the environment for command invocation✨
eval(1posix)construct command by concatenating arguments✨
ex(1posix)text editor✨
exec(1posix)execute commands and open, close, or copy file descriptors✨
exit(1posix)cause the shell to exit✨
expand(1posix)convert tabs to spaces✨
export(1posix)set the export attribute for variables✨
expr(1posix)evaluate arguments as an expression✨

F

false(1posix)return false value✨
fc(1posix)process the command history list✨
fg(1posix)run jobs in the foreground✨
file(1posix)determine file type✨
find(1posix)find files✨
fold(1posix)filter for folding lines✨
fort77(1posix)FORTRAN compiler (FORTRAN)✨
fuser(1posix)list process IDs of all processes that have one or more files open✨

G

gencat(1posix)generate a formatted message catalog✨
get(1posix)get a version of an SCCS file (DEVELOPMENT)✨
getconf(1posix)get configuration values✨
getopts(1posix)parse utility options✨
grep(1posix)search a file for a pattern✨

H

hash(1posix)remember or report utility locations✨
head(1posix)copy the first part of files✨

I

iconv(1posix)codeset conversion✨
id(1posix)return user identity✨
ipcrm(1posix)remove an XSI message queue, semaphore set, or shared memory segment identifier✨
ipcs(1posix)report XSI interprocess communication facilities status✨

J

jobs(1posix)display status of jobs in the current session✨
join(1posix)relational database operator✨

K

kill(1posix)terminate or signal processes✨

L

lex(1posix)generate programs for lexical tasks (DEVELOPMENT)✨
link(1posix)call link() function✨
ln(1posix)link files✨
locale(1posix)get locale-specific information✨
localedef(1posix)define locale environment✨
logger(1posix)log messages✨
logname(1posix)return the user's login name✨
lp(1posix)send files to a printer✨
ls(1posix)list directory contents✨

M

m4(1posix)macro processor✨
mailx(1posix)process messages✨
make(1posix)maintain, update, and regenerate groups of programs (DEVELOPMENT)✨
man(1posix)display system documentation✨
mesg(1posix)permit or deny messages✨
mkdir(1posix)make directories✨
mkfifo(1posix)make FIFO special files✨
more(1posix)display files on a page-by-page basis✨
mv(1posix)move files✨

N

newgrp(1posix)change to a new group✨
nice(1posix)invoke a utility with an altered nice value✨
nl(1posix)line numbering filter✨
nm(1posix)write the name list of an object file (DEVELOPMENT)✨
nohup(1posix)invoke a utility immune to hangups✨

O

od(1posix)dump files in various formats✨

P

paste(1posix)merge corresponding or subsequent lines of files✨
patch(1posix)apply changes to files✨
pathchk(1posix)check pathnames✨
pax(1posix)portable archive interchange✨
pr(1posix)print files✨
printf(1posix)write formatted output✨
prs(1posix)print an SCCS file (DEVELOPMENT)✨
ps(1posix)report process status✨
pwd(1posix)return working directory name✨

Q

qalter(1posix)alter batch job✨
qdel(1posix)delete batch jobs✨
qhold(1posix)hold batch jobs✨
qmove(1posix)move batch jobs✨
qmsg(1posix)send message to batch jobs✨
qrerun(1posix)rerun batch jobs✨
qrls(1posix)release batch jobs✨
qselect(1posix)select batch jobs✨
qsig(1posix)signal batch jobs✨
qstat(1posix)show status of batch jobs✨
qsub(1posix)submit a script✨

R

read(1posix)read from standard input into shell variables✨
readonly(1posix)set the readonly attribute for variables✨
renice(1posix)set nice values of running processes✨
return(1posix)return from a function or dot script✨
rm(1posix)remove directory entries✨
rmdel(1posix)remove a delta from an SCCS file (DEVELOPMENT)✨
rmdir(1posix)remove directories✨

S

sact(1posix)print current SCCS file-editing activity (DEVELOPMENT)✨
sccs(1posix)front end for the SCCS subsystem (DEVELOPMENT)✨
sed(1posix)stream editor✨
set(1posix)set or unset options and positional parameters✨
sh(1posix)shell, the standard command language interpreter✨
shift(1posix)shift positional parameters✨
sleep(1posix)suspend execution for an interval✨
sort(1posix)sort, merge, or sequence check text files✨
split(1posix)split a file into pieces✨
strings(1posix)find printable strings in files✨
strip(1posix)remove unnecessary information from strippable files (DEVELOPMENT)✨
stty(1posix)set the options for a terminal✨

T

tabs(1posix)set terminal tabs✨
tail(1posix)copy the last part of a file✨
talk(1posix)talk to another user✨
tee(1posix)duplicate standard input✨
test(1posix)evaluate expression✨
time(1posix)time a simple command✨
times(1posix)write process times✨
touch(1posix)change file access and modification times✨
tput(1posix)change terminal characteristics✨
tr(1posix)translate characters✨
trap(1posix)trap signals✨
true(1posix)return true value✨
tsort(1posix)topological sort✨
tty(1posix)return user's terminal name✨
type(1posix)write a description of command type✨

U

ulimit(1posix)set or report file size limit✨
umask(1posix)get or set the file mode creation mask✨
unalias(1posix)remove alias definitions✨
uname(1posix)return system name✨
uncompress(1posix)expand compressed data✨
unexpand(1posix)convert spaces to tabs✨
unget(1posix)undo a previous get of an SCCS file (DEVELOPMENT)✨
uniq(1posix)report or filter out repeated lines in a file✨
unlink(1posix)call the unlink() function✨
unset(1posix)unset values and attributes of variables and functions✨
uucp(1posix)system-to-system copy✨
uudecode(1posix)decode a binary file✨
uuencode(1posix)encode a binary file✨
uustat(1posix)uucp status enquiry and job control✨
uux(1posix)remote command execution✨

V

val(1posix)validate SCCS files (DEVELOPMENT)✨
vi(1posix)screen-oriented (visual) display editor✨

W

wait(1posix)await process completion✨
wc(1posix)word, line, and byte or character count✨
what(1posix)identify SCCS files (DEVELOPMENT)✨
who(1posix)display who is on the system✨
write(1posix)write to another user✨

X

xargs(1posix)construct argument lists and invoke utility✨

Y

yacc(1posix)yet another compiler compiler (DEVELOPMENT)✨

Z

zcat(1posix)expand and concatenate data✨