As per http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=285852
.B getegid
returns the effective group ID of the current process.
-
-The real ID corresponds to the ID of the calling process. The effective ID
-corresponds to the set ID bit on the file being executed.
.SH ERRORS
These functions are always successful.
.SH "CONFORMING TO"
.B geteuid
returns the effective user ID of the current process.
-
-The real ID corresponds to the ID of the calling process. The effective ID
-corresponds to the set ID bit on the file being executed.
.SH ERRORS
These functions are always successful.
.SH "CONFORMING TO"