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From: jensen@diku.dk (J|rgen Jensen)
Newsgroups: comp.unix.shell
Subject: Re: Comparing modified times of files
Message-ID: <1991Mar31.191541.7351@odin.diku.dk>
Date: 31 Mar 91 19:15:41 GMT
References: <SCOTTP.91Mar8093523@bwdlh504.bnr.ca> <930001@mjm.mjm.com> <6350@amc-gw.amc.com> <afu901eJ48K000@amdahl.uts.amdahl.com> <6067@iron6.UUCP> <787r01De4aF300@amdahl.uts.amdahl.com>
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Organization: Department of Computer Science, U of Copenhagen
Lines: 47

krs@uts.amdahl.com (Kris Stephens [Hail Eris!]) writes:

  >In article <6067@iron6.UUCP> yeates@motcid.UUCP (Tony J Yeates) writes:
  >>krs@uts.amdahl.com (Kris Stephens [Hail Eris!]) writes:
  >>
  >>># sh or ksh fragment
  >>>newest() {
  >>>	set -- ls -t $* 2>/dev/null
  >>>	echo $1
  >>>	}
  >>>oldest() {
  >>>	set -- ls -rt $* 2>/dev/null
  >>>	echo $1
  >>>	}
  >>
  >>Can you have functions in Bourne Shell scripts?  I thought this was 
  >>only available in Ksh.
  >
  >Well, it works in my Bourne shell.  :-)
  >...Kris
  >-- 

well, *functions* work in my Bourne shell too, but the above 
doesn't -- shouldn't a pair of back-ticks (`) enter into the
thing somewhere?-)

my favorite way of comparing the recentness of *two* files follows
(I believe that was the original poster's problem):

   :
   #!/bin/sh -
   # 
   if find $1 -newer $2 -print -o -prune | read a
   then echo $1 is newer than $2
   fi

   # if your find doesn't have a "-prune"-predicate this
   # won't work for directories.  some older finds (SysV?)
   # didn't support filenames where "$1" is inserted
   # -- i think -- then this won't work at all, of course.


-- 

 . . . . . . . . . . . . . . . . . . . . . . . . . . j e n s e n
(jensen@diku.dk)
                        Opinions? -- These are rock-solid facts!