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.
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Famous quotes containing the words effective and/or real:
“Women, because of their colonial relationship to men, have to fight for their own independence. This fight for our own independence will lead to the growth and development of the revolutionary movement in this country. Only the independent woman can be truly effective in the larger revolutionary struggle.”
—Women’s Liberation Workshop, Students for a Democratic Society, Radical political/social activist organization. “Liberation of Women,” in New Left Notes (July 10, 1967)
“I believe very profoundly in an over-ruling Providence, and I do not fear that any real plans can be thrown off the track. It may not be intended that I shall be President—but that would not break my heart.”
—Woodrow Wilson (1856–1924)