one can try readlink and fall back to the thing that breaks under unusual 
circumstances only if its not there.
But for ubuntu/debian we don't even need to care, we have readlink in coreutils.

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https://bugs.launchpad.net/bugs/1141106

Title:
  usr/bin/libreoffice script bad symlink following

Status in “libreoffice” package in Ubuntu:
  Confirmed
Status in “libreoffice” package in Debian:
  New

Bug description:
  1:4.0.0~beta2-0ubuntu2

  content of usr/bin/libreoffice:

  sd_cwd=`pwd`
  sd_res=$0
  while [ -h "$sd_res" ] ; do
      cd "`dirname "$sd_res"`"
      sd_basename=`basename "$sd_res"`
      sd_res=`ls -l "$sd_basename" | sed "s/.*$sd_basename -> //g"`
  done
  cd "`dirname "$sd_res"`"
  sd_prog=`pwd`
  cd "$sd_cwd"


  sd_res is a symlink in ubuntu so it goes in there
  please use something sane like readlink to get the target instead of that 
weird sed line

  a user in #ubuntu+1 reports issues with it because he apparently has some 
invalid locale in the month part of ls -l:
  he gets:
  02:04 <Allard> /usr/bin/libreoffice: 49: cd: can't cd to lrwxrwxrwx 1 root 
root 34 ���../lib/libreoffice/program
  02:04 <Allard> /usr/bin/libreoffice: 156: exec: /usr/bin/oosplash: not found

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