--- doc/loncapafiles/sanitycheck.piml	2002/11/26 15:26:44	1.8
+++ doc/loncapafiles/sanitycheck.piml	2003/02/03 18:03:51	1.13
@@ -1,9 +1,8 @@
 <!DOCTYPE piml PUBLIC "-//TUX/DTD piml 1.0 Final//EN" 
 	"http://lpml.sourceforge.net/DTD/piml.dtd">
 <!-- sanitycheck.piml -->
-<!-- Scott Harrison -->
 
-<!-- $Id: sanitycheck.piml,v 1.8 2002/11/26 15:26:44 matthew Exp $ -->
+<!-- $Id: sanitycheck.piml,v 1.13 2003/02/03 18:03:51 harris41 Exp $ -->
 
 <!--
 
@@ -33,8 +32,34 @@ http://www.lon-capa.org/
 <targetroot>/</targetroot>
 <files>
 <file>
+<target dist='default'>/etc/hosts</target>
+<perlscript mode='fg'>
+unless
+    (-e '<TARGET />') # Does file exist?
+  {
+    print("**** ERROR **** Missing <TARGET />\n");
+  }
+else
+  {
+    my $numentries = `grep -v '^#' <TARGET /> | grep -c '[[:alpha:]]'`;
+    if ($numentries == 1)
+      {
+        print("**** ERROR **** Malformatted <TARGET />\n");
+        print("<TARGET /> typically should have at least two entries, ".
+	      "e.g.:\n");
+	print("127.0.0.1               localhost.localdomain localhost\n");
+	print("35.8.63.26              s16.lite.msu.edu s16\n");
+        print("The <TARGET /> file on your machine looks like it was \n".
+	      "messed up due to a common bug with RedHat installations.\n".
+	      "(This weird bug is RedHat's fault, not LON-CAPA's.)\n");
+        print("Please read the man pages about \"hosts\" and fix your\n".
+	      "<TARGET /> file.\n");
+      }
+  }
+</perlscript>
+</file>
+<file>
 <target dist='default'>/var/lib/mysql/mysql.sock</target>
-<target dist='redhat7.2 redhat7.3'>/tmp/mysql.sock</target>
 <perlscript mode='fg'>
 unless
     (-e '<TARGET />') # Does file exist?
@@ -123,6 +148,7 @@ my $dbug=0;
 my $sbug=0;
 my $fbug=0;
 while (&lt;IN&gt;) {
+ next if (/^(\#|\s*$)/);
  if (/\S/) {
   $rbug=1 if /\r/;
   my @a=split(/\:/,$_);