--- /dev/null
+#!/usr/local/bin/perl
+
+if ($#ARGV < 0) {
+ die "dirname.pl: too few arguments\n";
+} elsif ($#ARGV > 0) {
+ die "dirname.pl: too many arguments\n";
+}
+
+my $d = $ARGV[0];
+
+if ($d =~ m|.*/.*|) {
+ $d =~ s|/[^/]*$||;
+} else {
+ $d = ".";
+}
+
+print $d,"\n";
+exit(0);