#!/bin/bash
#
# usage: touch_id file1 file2 ...
#
# Changes RCS's version code  $Id: ...$ into $Id:$ in the named
# files, such that subsequent "diff -u" patch files will always indicate
# clearly, against what old version the diff was made. This will avoid
# confusion about how to apply patch files.
#
perl -p -i -e 's/\$Id:.*\$/\$Id:\$/;' $*