Allows optional second argument.

This is the name of the destination file. The destination directory
is determined by compare.

diff --git a/mach/compare b/mach/compare
index 32b8be1..fc54003 100755 (executable)
--- a/mach/compare
+++ b/mach/compare
@@ -1,2 +1,7 @@
+case $# in
+1)     DEST="$1" ;;
+2)     DEST="$2" ;;
+*)     echo $0 [source] destination ;;
+esac
 MACH=`(cd .. ; basename \`pwd\`)`
-cmp $1 ../../../lib/${MACH}/$1
+cmp "$1" ../../../lib/${MACH}/$DEST