Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
function::egid - Returns the effective gid of a target process
SYNOPSIS
egid:long()
ARGUMENTS
None
DESCRIPTION
This function returns the effective gid of a target process
SEE ALSO
tapset::context(3stap)
SystemTap Tapset Reference March 2016 FUNCTION::EGID(3stap)