Pid

From LQWiki
(Redirected from PID)
Jump to navigation Jump to search

A pid, or process identifier, is an integer or numeric number used by Unix and other Unix-like operating system kernels, such as Linux, to identify a running process.

Processes are managed by their PIDs - for example, a PID is returned by the fork system call and can be passed to wait() or kill() to perform actions on the given process.

See also kill, killall, ps, pstree, proc