Manual: nproc
NPROC(1) General Commands Manual NPROC(1)
NAME
nproc - Print the number of cores available to the current process. If the OMP_NUM_THREADS or OMP_THREAD_LIMIT enviβ
ronment variables are set, then they will determine the minimum and maximum returned value respectively.
SYNOPSIS
nproc [--all] [--ignore] [-h|--help] [-V|--version]
DESCRIPTION
Print the number of cores available to the current process. If the OMP_NUM_THREADS or OMP_THREAD_LIMIT environment
variables are set, then they will determine the minimum and maximum returned value respectively.
OPTIONS
--all print the number of cores available to the system
--ignore
ignore up to N cores
-h, --help
Print help
-V, --version
Print version
VERSION
v(uutils coreutils) 0.8.0
2026-04-16 NPROC(1)