mdate-sh

   1 #!/bin/sh
   2 # Get modification time of a file or directory and pretty-print it.
   3 # Copyright 1995, 1996, 1997 Free Software Foundation, Inc.
   4 # written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2, or (at your option)
   9 # any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software Foundation,
  18 # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19
  20 # As a special exception to the GNU General Public License, if you
  21 # distribute this file as part of a program that contains a
  22 # configuration script generated by Autoconf, you may include it under
  23 # the same distribution terms that you use for the rest of that program.
  24
  25 # Prevent date giving response in another language.
  26 LANG=C
  27 export LANG
  28 LC_ALL=C
  29 export LC_ALL
  30 LC_TIME=C
  31 export LC_TIME
  32
  33 # Get the extended ls output of the file or directory.
  34 # On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
  35 if ls -L /dev/null 1>/dev/null 2>&1; then
  36   set - x`ls -L -l -d $1`
  37 else
  38   set - x`ls -l -d $1`
  39 fi
  40 # The month is at least the fourth argument
  41 # (3 shifts here, the next inside the loop).
  42 shift
  43 shift
  44 shift
  45
  46 # Find the month.  Next argument is day, followed by the year or time.
  47 month=
  48 until test $month
  49 do
  50   shift
  51   case $1 in
  52     Jan) month=January; nummonth=1;;
  53     Feb) month=February; nummonth=2;;
  54     Mar) month=March; nummonth=3;;
  55     Apr) month=April; nummonth=4;;
  56     May) month=May; nummonth=5;;
  57     Jun) month=June; nummonth=6;;
  58     Jul) month=July; nummonth=7;;
  59     Aug) month=August; nummonth=8;;
  60     Sep) month=September; nummonth=9;;
  61     Oct) month=October; nummonth=10;;
  62     Nov) month=November; nummonth=11;;
  63     Dec) month=December; nummonth=12;;
  64   esac
  65 done
  66
  67 day=$2
  68
  69 # Here we have to deal with the problem that the ls output gives either
  70 # the time of day or the year.
  71 case $3 in
  72   *:*) set `date`; eval year=\$$#
  73        case $2 in
  74          Jan) nummonthtod=1;;
  75          Feb) nummonthtod=2;;
  76          Mar) nummonthtod=3;;
  77          Apr) nummonthtod=4;;
  78          May) nummonthtod=5;;
  79          Jun) nummonthtod=6;;
  80          Jul) nummonthtod=7;;
  81          Aug) nummonthtod=8;;
  82          Sep) nummonthtod=9;;
  83          Oct) nummonthtod=10;;
  84          Nov) nummonthtod=11;;
  85          Dec) nummonthtod=12;;
  86        esac
  87        # For the first six month of the year the time notation can also
  88        # be used for files modified in the last year.
  89        if (expr $nummonth \> $nummonthtod) > /dev/null;
  90        then
  91          year=`expr $year - 1`
  92        fi;;
  93   *) year=$3;;
  94 esac
  95
  96 # The result.
  97 echo $day $month $year