---
name: "getegid"
section: "2"
platform: "macos"
package: "xnu"
version: "12377.121.6"
release: "macOS 26.5"
platforms: ["linux", "freebsd", "macos"]
url: "https://new.carta.tech/getgid"
---

# getegid(2)

get group process identification

Part of [getgid(2)](/getgid/2.md).

## NAME

**getegid**, **getgid** – get group process identification

## SYNOPSIS

**#include \<unistd.h\>**

*gid\_t*\

**getegid**(*void*);

*gid\_t*\

**getgid**(*void*);

## DESCRIPTION

The **getgid**() function returns the real group ID of the calling process, **getegid**() returns the effective group ID of the calling process.

The real group ID is specified at login time.

The real group ID is the group of the user who invoked the program. As the effective group ID gives the process additional permissions during the execution of “*set-group-ID*” mode processes, **getgid**() is used to determine the real-user-id of the calling process.

## ERRORS

The **getgid**() and **getegid**() functions are always successful; no return value is reserved to indicate an error.

## LEGACY SYNOPSIS

**#include \<sys/types.h\>** **#include \<unistd.h\>**

The include file ⟨sys/types.h⟩ is necessary.

## SEE ALSO

[getuid(2)](/getuid/2.md), [setregid(2)](/setregid/2.md), setgid(3)

## STANDARDS

**getgid**() and **getegid**() conform to  IEEE Std 1003.1-1988 (“POSIX.1”).