--- doc/loncapafiles/sanitycheck.piml	2002/11/26 15:26:44	1.8
+++ doc/loncapafiles/sanitycheck.piml	2003/05/27 13:16:44	1.14
@@ -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 1.14 2003/05/27 13:16:44 matthew 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?
@@ -51,7 +76,7 @@ else # It exists, so look at the file me
 
     if ($uid ne $web_uid) # If file owned by someone else other than www.
       {
-	print('**** ERROR **** <TARGET /> should be owned by'.
+	print('**** WARNING **** <TARGET /> should be owned by'.
 	      ' www.'."\n".'Try these commands to make things right:'."\n".
 	      'chown www:www <TARGET />'."\n".
 	      'chmod a-rwx,u+rwx <TARGET />'."\n");
@@ -62,7 +87,7 @@ else # It exists, so look at the file me
 	my $wflag = $1;
 	if ($wflag != 7) # Can www use this socket?  (Hope so!)
 	  {
-	    print('**** ERROR **** '.
+	    print('**** WARNING **** '.
 	      '<TARGET /> should be user "rwx" (by'.
 	      ' www).'."\n".'Try these commands to make things right:'."\n".
 	      'chown www:www <TARGET />'."\n".
@@ -72,7 +97,7 @@ else # It exists, so look at the file me
 	$wflag=$1;
 	if ($wflag ne "00") # Can others use this socket?  (Hope not!)
 	  {
-	    print('**** ERROR **** '.
+	    print('**** WARNING **** '.
 	      '<TARGET /> should not be group or everybody accessible'.
 	      '.'."\n".'Try these commands to make things right:'."\n".
 	      'chown www:www <TARGET />'."\n".
@@ -123,6 +148,7 @@ my $dbug=0;
 my $sbug=0;
 my $fbug=0;
 while (&lt;IN&gt;) {
+ next if (/^(\#|\s*$)/);
  if (/\S/) {
   $rbug=1 if /\r/;
   my @a=split(/\:/,$_);