bsd man page for wait

WAIT(1) 						      General Commands Manual							   WAIT(1)

NAME
       wait - await completion of process

SYNOPSIS
       wait

DESCRIPTION
       Wait until all processes started with & have completed, and report on abnormal terminations.

       Because the wait(2) system call must be executed in the parent process, the Shell itself executes wait, without creating a new process.

SEE ALSO
       sh(1)

BUGS
       Not  all the processes of a 3- or more-stage pipeline are children of the Shell, and thus can't be waited for.  (This bug does not apply to
       csh(1).)

7th Edition							  April 29, 1985							   WAIT(1)