1*86d7f5d3SJohn Marino15 January 1990 2*86d7f5d3SJohn MarinoPaul Vixie 3*86d7f5d3SJohn Marino 4*86d7f5d3SJohn MarinoMany people have contributed to cron. Many more than I can remember, in fact. 5*86d7f5d3SJohn MarinoRich Salz and Carl Gutekunst were each of enormous help to me in V1; Carl for 6*86d7f5d3SJohn Marinohelping me understand UNIX well enough to write it, and Rich for helping me 7*86d7f5d3SJohn Marinoget the features right. 8*86d7f5d3SJohn Marino 9*86d7f5d3SJohn MarinoJohn Gilmore wrote me a wonderful review of V2, which took me a whole year to 10*86d7f5d3SJohn Marinoanswer even though it made me clean up some really awful things in the code. 11*86d7f5d3SJohn Marino(According to John the most awful things are still in here, of course.) 12*86d7f5d3SJohn Marino 13*86d7f5d3SJohn MarinoPaul Close made a suggestion which led to /etc/crond.pid and the mutex locking 14*86d7f5d3SJohn Marinoon it. Kevin Braunsdorf of Purdue made a suggestion that led to @reboot and 15*86d7f5d3SJohn Marinoits brothers and sisters; he also sent some diffs that lead cron toward compil- 16*86d7f5d3SJohn Marinoability with System V, though without at(1) capabilities, this cron isn't going 17*86d7f5d3SJohn Marinoto be that useful on System V. Bob Alverson fixed a silly bug in the line 18*86d7f5d3SJohn Marinonumber counting. Brian Reid made suggestions which led to the run queue and 19*86d7f5d3SJohn Marinothe source-file labelling in installed crontabs. 20*86d7f5d3SJohn Marino 21*86d7f5d3SJohn MarinoScott Narveson ported V2 to a Sequent, and sent in the most useful single batch 22*86d7f5d3SJohn Marinoof diffs I got from anybody. Changes attributable to Scott are: 23*86d7f5d3SJohn Marino -> sendmail won't time out if the command is slow to generate output 24*86d7f5d3SJohn Marino -> day-of-week names aren't off by one anymore 25*86d7f5d3SJohn Marino -> crontab says the right thing if you do something you shouldn't do 26*86d7f5d3SJohn Marino -> crontab(5) man page is longer and more informative 27*86d7f5d3SJohn Marino -> misc changes related to the side effects of fclose() 28*86d7f5d3SJohn Marino -> Sequent "universe" support added (may also help on Pyramids) 29*86d7f5d3SJohn Marino -> null pw_shell is dealt with now; default is /bin/sh 30