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:
“I am sorry to think that you do not get a man’s most effective criticism until you provoke him. Severe truth is expressed with some bitterness.”
—Henry David Thoreau (1817–1862)
“I’m not making light of prayers here, but of so-called school prayer, which bears as much resemblance to real spiritual experience as that freeze-dried astronaut food bears to a nice standing rib roast. From what I remember of praying in school, it was almost an insult to God, a rote exercise in moving your mouth while daydreaming or checking out the cutest boy in the seventh grade that was a far, far cry from soul-searching.”
—Anna Quindlen (b. 1952)