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Text File  |  1979-01-10  |  270 b   |  18 lines
  1. e=
  2. case $1 in
  3. -*)
  4.     e=$1
  5.     shift;;
  6. esac
  7. if test $# = 3 -a -f $1 -a -f $2 -a -f $3
  8. then
  9.     :
  10. else
  11.     echo usage: diff3 file1 file2 file3 1>&2
  12.     exit
  13. fi
  14. trap "rm -f /tmp/d3[ab]$$" 0 1 2 13 15
  15. diff $1 $3 >/tmp/d3a$$
  16. diff $2 $3 >/tmp/d3b$$
  17. /usr/lib/diff3 $e /tmp/d3[ab]$$ $1 $2 $3
  18.