citadel/guesstimezone.sh

   1 #!/bin/sh
   2
   3 # guesstimezone.sh - an ugly hack of a script to try to guess the time
   4 # zone currently in use on the host system, and output its name.
   5
   6 # Copyright (c) by Art Cancro
   7
   8 # This program is free software; you can redistribute it and/or modify it
   9 # under the terms of the GNU General Public License as published by the Free
  10 # Software Foundation; either version 3 of the License, or (at your option)
  11 # any later version.
  12
  13 # This program is distributed in the hope that it will be useful, but WITHOUT
  14 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  16 # more details.
  17
  18 # You should have received a copy of the GNU General Public License along
  19 # with this program; if not, write to the Free Software Foundation, Inc.,
  20 # 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22 md5sum </dev/null >/dev/null 2>/dev/null || exit 1
  23
  24 LOCALTIMESUM=`md5sum /etc/localtime | awk ' { print $1 } ' 2>/dev/null`
  25 find /usr/share/zoneinfo -type f -print | while read filename
  26 do
  27         THISTIMESUM=`md5sum $filename | awk ' { print $1 } '`
  28         if [ $LOCALTIMESUM = $THISTIMESUM ] ; then
  29                 echo $filename | cut -c21-
  30                 exit 0
  31         fi
  32 done 2>/dev/null
  33 exit 2