Avoid using dirname; sed can do this just as well...

gvanrossum · gvanrossum · commit c594baa5526d · 1998-05-05T20:39:58.000Z
diff --git a/install-sh b/install-sh
@@ -96,7 +96,8 @@ fi
 
 # Make a temp file name in the proper directory.
 
-dstdir=`dirname $dst`
+# Avoid dirname, which doesn't exist everywhere...
+dstdir=`echo $dst | sed 's,/[^/]*$,,'`
 dsttmp=$dstdir/#inst.$$#
 
 # Move or copy the file name to the temp name
