[cat199]

openbsd 'who' is in the 300 range:

http://cvsweb.openbsd.org/src/usr.bin/who/who.c?rev=1.29&con...

this version appears to derive from rewriting unix who in the 4.4BSD era to replace AT&T code (copyright 1989 / no AT&T in header notes as basis for assumption)

[drewg123]

Its interesting. FreeBSD's is about the same size, but was again re-written in 2002 to "to add some features required by SUSv3" : https://github.com/freebsd/freebsd/commit/1894db5ac7af64acc7...