1 files changed, 120 insertions, 0 deletions
diff --git a/misc-utils/chkdupexe b/misc-utils/chkdupexe
new file mode 100644
index 0000000..b82b102
--- /dev/null
+++ b/misc-utils/chkdupexe
@@ -0,0 +1,120 @@
+#! -w
+#
+# chkdupexe version 2.1.1
+#
+# Simple script to look for and list duplicate executables and dangling
+# symlinks in the system executable directories.
+#
+# Copyright 1993 Nicolai Langfeldt. janl@math.uio.no
+#  Distribute under gnu copyleft (included in perl package) 
+#
+# Modified 1995-07-04 Michael Shields <shields@tembel.org>
+#     Don't depend on GNU ls.
+#     Cleanups.
+#     Merge together $ENV{'PATH'} and $execdirs.
+#     Don't break if there are duplicates in $PATH.
+#
+# Modified 1996-02-16 Nicolai Langfeldt (janl@math.uio.no).
+#     I was thinking admins would edit the $execdirs list to suit their
+#     machine(s) when I wrote this.  This is ofcourse not the case, thus
+#     Michaels fixes.  And my fixes to his :-)
+#     - Working duplicate dirs detection.
+#     - Added more checks
+#     - Took out $PATH from the list of checked directories and added a
+#	check for $execdirs and $PATH consistency instead
+#     - Made it possible to run with perl -w
+
+$execdirs='/bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin '.
+  '/usr/X11/bin /usr/bin/X11 /usr/local/X11/bin '.
+  '/usr/TeX/bin /usr/tex/bin /usr/games '.
+  '/usr/local/games';
+
+# Turn off buffering for the output channel.
+$|=1;
+
+# Values from /usr/include/linux/errno.h.  Existence of linux/errno.ph is not
+# something to count on... :-(
+$ENOENT=2;
+
+%didthis=();
+
+foreach $dir (split(/\s+/, "$execdirs"), "\0", split(/:/, $ENV{PATH})) {
+
+  if ($dir eq "\0") { $checkingpath = 1; next; }
+
+  # It's like this: One directory corresponds to one $device,$inode tuple
+  # If a symlink points to a directory we already checked that directory
+  # will have the same $device,$inode tuple.
+
+  # Does this directory have any real exstence outside the ravings of
+  # symlinks pointing hither and dither?
+  ($device,$inode)=stat($dir); 
+  if (!defined($device)) {
+    # Nonexistant directory, or dangling symlink?
+    ($dum)=lstat($dir);
+    next if $! == $ENOENT;
+    if (!$dum) {
+      print "Dangling symlink: $dir\n";
+      next;
+    }
+    warn "Nonexistent directory: $dir\n" if ($checkingpath);
+    next;
+  }
+
+  if (!-d _) {
+    print "Not a directory: $dir\n";
+    next;
+  }
+
+  next if defined($didthis{$device,$inode});
+
+  $didthis{$device,$inode}=1;
+
+  chdir($dir) || die "Could not chdir $dir: $!\n";
+# This would give us the true directory name, do we want that?
+#  chop($dir=`pwd`);
+  opendir(DIR,".") || 
+    die "NUTS! Personaly I think your perl or filesystem is broken.\n".
+      "I've done all sorts of checks on $dir, and now I can't open it!\n";
+  foreach $_ (readdir(DIR)) {
+    lstat($_);
+    if (-l _) {
+      ($dum)=stat($_);
+      print "Dangling symlink: $dir/$_\n" unless defined($dum);
+      next;
+    }
+    next unless -f _ && -x _;	# Only handle regular executable files
+    if (defined($count{$_})) {
+      $progs{$_}.=" $dir/$_";
+      $count{$_}++;
+    } else {
+      $progs{$_}="$dir/$_";
+      $count{$_}=1;
+    }
+  }
+  closedir(DIR);
+}
+
+open(LS,"| xargs -r ls -ldU");
+while (($prog,$paths)=each %progs) {
+  print LS "$paths\n" if ($count{$prog}>1);
+}
+close(LS);
+
+exit 0;
+
+@unchecked=();
+# Check if the users PATH contains something I've not checked. The site admin
+# might want to know about inconsistencies in user PATHs and chkdupexec 
+# configuration
+foreach $dir (split(/:/,$ENV{'PATH'})) {
+  ($device,$inode)=stat($dir);
+  next unless defined($device);
+  next if defined($didthis{$device,$inode});
+  push(@unchecked,$dir);
+  $didthis{$device,$inode}=1;
+}
+
+print "Warning: Your path contains these directories which chkdupexe has not checked:\n",join(',',@unchecked),
+  ".\nPlease review the execdirs list in chkdupexe.\n"
+    if ($#unchecked>=$[);