Effective Vs. Real
Unix processes have an effective (EUID, EGID), a real (UID, GID) and a saved (SUID, SGID) ID. Normally these are identical, but in setgid processes they are different.
Read more about this topic: Group Identifier
Famous quotes containing the words effective and/or real:
“The message you give your children when you discipline with love is “I care too much about you to let you misbehave. I care enough about you that I’m willing to spend time and effort to help you learn what is appropriate.” All children need the security and stability of food, shelter, love, and protection, but unless they also receive effective and appropriate discipline, they won’t feel secure.”
—Stephanie Marston (20th century)
“Religion is a great force: the only real motive force in the world; but what you fellows don’t understand is that you must get at a man through his own religion and not through yours.”
—George Bernard Shaw (1856–1950)