home *** CD-ROM | disk | FTP | other *** search
- 15 January 1990
- Paul Vixie
-
- Many people have contributed to cron. Many more than I can remember, in fact.
- Rich Salz and Carl Gutekunst were each of enormous help to me in V1; Carl for
- helping me understand UNIX well enough to write it, and Rich for helping me
- get the features right.
-
- John Gilmore wrote me a wonderful review of V2, which took me a whole year to
- answer even though it made me clean up some really awful things in the code.
- (According to John the most awful things are still in here, of course.)
-
- Paul Close made a suggestion which led to /etc/crond.pid and the mutex locking
- on it. Kevin Braunsdorf of Purdue made a suggestion that led to @reboot and
- its brothers and sisters; he also sent some diffs that lead cron toward compil-
- ability with System V, though without at(1) capabilities, this cron isn't going
- to be that useful on System V. Bob Alverson fixed a silly bug in the line
- number counting. Brian Reid made suggestions which led to the run queue and
- the source-file labelling in installed crontabs.
-
- Scott Narveson ported V2 to a Sequent, and sent in the most useful single batch
- of diffs I got from anybody. Changes attributable to Scott are:
- -> sendmail won't time out if the command is slow to generate output
- -> day-of-week names aren't off by one anymore
- -> crontab says the right thing if you do something you shouldn't do
- -> crontab(5) man page is longer and more informative
- -> misc changes related to the side effects of fclose()
- -> Sequent "universe" support added (may also help on Pyramids)
- -> null pw_shell is dealt with now; default is /bin/sh
-