Usage: /usr/bin/nproc [OPTION]...
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.

      --all
         print the number of installed processors,
         disregarding any OpenMP environment variables, or CPU quotas.
      --ignore=N
         if possible, exclude N processing units.
         The result is guaranteed to be at least 1.
      --help
         display this help and exit
      --version
         output version information and exit

Report bugs to: <bug-coreutils@gnu.org>.
GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
General help using GNU software: <https://www.gnu.org/gethelp/>
Full documentation <https://www.gnu.org/software/coreutils/nproc>
or available locally via: info '(coreutils) nproc invocation'