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diff move-if-change @ 2330:12ff450cbb1f

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[project @ 1996-07-19 01:39:22 by jwe] Initial revision
author jwe
date Fri, 19 Jul 1996 01:49:31 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/move-if-change	Fri Jul 19 01:49:31 1996 +0000
@@ -0,0 +1,15 @@
+#!/bin/sh
+#
+# Like mv $1 $2, but if the files are the same, just delete $1.
+# Status is 0 if $2 is changed, 1 otherwise.
+
+if test -r $2; then
+  if cmp $1 $2 > /dev/null; then
+    echo $2 is unchanged
+    rm -f $1
+  else
+    mv -f $1 $2
+  fi
+else
+  mv -f $1 $2
+fi