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Xref: sserve comp.unix.bsd:14671 comp.unix.misc:13603 comp.unix.programmer:19460 comp.unix.questions:54029 Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!munnari.oz.au!news.Hawaii.Edu!ames!hookup!usc!math.ohio-state.edu!jussieu.fr!univ-lyon1.fr!swidir.switch.ch!newsfeed.ACO.net!Austria.EU.net!EU.net!uunet!news1.digex.net!digex.net!not-for-mail From: saalwaec@access1.digex.net (John W. Saalwaechter) Newsgroups: comp.unix.bsd,comp.unix.misc,comp.unix.programmer,comp.unix.questions Subject: Re: Q: How can I get yesterday's date? Date: 16 Aug 1994 09:09:42 -0400 Organization: Express Access Online Communications, Greenbelt, MD USA Lines: 30 Message-ID: <32qdqm$bnv@access1.digex.net> References: <Pine.3.89.9408160216.A15886-0100000@worf.uwsp.edu> <32q00b$9vn@daphne.ecmwf.co.uk> NNTP-Posting-Host: access1.digex.net In article <Pine.3.89.9408160216.A15886-0100000@worf.uwsp.edu>, pzuge@worf.uwsp.edu (Peter Zuge) writes: > I am using BSD/386 unix: > > I need to create a script that will run at a certain time everyday > "getting" ( via ftp ) a file with yesterday's date. [stuff about getting yesterday's date deleted.] % uname -rsv BSD/386 1.0 0 % date Tue Aug 16 08:56:09 EDT 1994 % date -r `perl -e 'print time - 24*60*60'` Mon Aug 15 08:56:15 EDT 1994 % Combine the '-r' option to date with perl's 'time' capability to get yesterday's date. For your specific question (using the Bourne shell): $ yestertime=`perl -e 'print time - 24*60*60'` $ yy=`date -r $yestertime +%y` $ mm=`date -r $yestertime +%m` $ dd=`date -r $yestertime +%d` $ fn="GS$yy$mm$dd.LOG" -- /************************************************************/ /* John Saalwaechter */ /* saalwaec@access.digex.net */ /************************************************************/