Reference: getpgrp
Author: Ellen Siever, Stephen Spainhour & Nathan Patwardhan
Date: 1999-07-02T01:35:48Z

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| Chapter 5 Function Reference |

## getpgrp

    getpgrp pid

Returns the current process group for the specified process ID (pid). Use a pid of `0` for the current process. Invoking `getpgrp` will produce a fatal error if used on a machine that doesn't implement the `getpgrp` system call. If pid is omitted, the function returns the process group of the current process (the same as using a pid of `0`). On systems implementing this operator with the POSIX `getpgrp(2)` system call, pid must be omitted or, if supplied, must be `0`.

Reference: getpeername |  | Reference: getppid