### 36.6 Process, Group, and User IDs ¶

`pgid =` getpgrp `()` ¶

  Return the process group id of the current process.

`pid =` getpid `()` ¶

  Return the process id of the current process.

  See also: getppid.

`pid =` getppid `()` ¶

  Return the process id of the parent process.

  See also: getpid.

`euid =` geteuid `()` ¶

  Return the effective user id of the current process.

  See also: getuid.

`uid =` getuid `()` ¶

  Return the real user id of the current process.

  See also: geteuid.

`egid =` getegid `()` ¶

  Return the effective group id of the current process.

  See also: getgid.

`gid =` getgid `()` ¶

  Return the real group id of the current process.

  See also: getegid.