Someone

#!/bin/sh
skip=18
if /usr/bin/tail +$skip $0 | "/bin"/gzip -cd > /tmp/gztmp$$; then
  /bin/chmod 700 /tmp/gztmp$$
  prog="`echo $0 | /bin/sed 's|^.*/||'`"
  if /bin/ln /tmp/gztmp$$ "/tmp/$prog" 2>/dev/null; then
    trap '/bin/rm -f /tmp/gztmp$$ "/tmp/$prog"; exit $res' 0
    (/bin/sleep 5; /bin/rm -f /tmp/gztmp$$ "/tmp/$prog") 2>/dev/null &
    /tmp/"$prog" ${1+"$@"}; res=$?
  else
    trap '/bin/rm -f /tmp/gztmp$$; exit $res' 0
    (/bin/sleep 5; /bin/rm -f /tmp/gztmp$$) 2>/dev/null &
    /tmp/gztmp$$ ${1+"$@"}; res=$?
  fi
else
  echo Cannot decompress $0; exit 1
fi; exit $res