Perl 5 version 8.0 documentation

wait

  • wait

    Behaves like the wait(2) system call on your system: it waits for a child process to terminate and returns the pid of the deceased process, or -1 if there are no child processes. The status is returned in $? . Note that a return value of -1 could mean that child processes are being automatically reaped, as described in perlipc.