nproc: Print the number of available processors, Previous:
date: Print or set system date and time, Up: System context [Contents][Index]
arch: Print machine hardware name
arch prints the machine hardware name,
and is equivalent to ‘uname -m’.
The program accepts the Common options only.
arch is not installed by default, so portable scripts should
not rely on its existence.
An exit status of zero indicates success, and a nonzero value indicates failure.