NPROC

Section: User Commands (1)
Updated: February 2026
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NAME

nproc - print the number of processing units available  

SYNOPSIS

nproc [,OPTION/]...  

DESCRIPTION

Print the number of processing units available to the current process, which may be less than the number of online processors. If the 'OMP_NUM_THREADS' or 'OMP_THREAD_LIMIT' environment variables are set, then they will determine the minimum and maximum returned value respectively.

X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#npro-all'--allX'tty: link'

print the number of installed processors, disregarding any OpenMP environment variables, or CPU quotas.

X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#npro-ignore'--ignore=NX'tty: link'

if possible, exclude N processing units. The result is guaranteed to be at least 1.

X'tty: link https://www.gnu.org/software/coreutils/nproc#npro-help'--helpX'tty: link'

display this help and exit

X'tty: link https://www.gnu.org/software/coreutils/nproc#npro-version'--versionX'tty: link'

output version information and exit

 

AUTHOR

Written by Giuseppe Scrivano.  

REPORTING BUGS

Report bugs to: bug-coreutils@gnu.org

Report Gentoo bugs to: https://bugs.gentoo.org/
GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
General help using GNU software: <https://www.gnu.org/gethelp/>
Report any translation bugs to <https://translationproject.org/team/>  

SEE ALSO

Full documentation <https://www.gnu.org/software/coreutils/nproc>
or available locally via: info aq(coreutils) nproc invocationaq

Packaged by Gentoo (9.10 (p0))
Copyright © 2026 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

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Index

NAME

SYNOPSIS

DESCRIPTION

AUTHOR

REPORTING BUGS

SEE ALSO