--- doc/install/linux/install.pl	2019/11/07 15:55:31	1.60
+++ doc/install/linux/install.pl	2020/05/01 14:13:31	1.63
@@ -77,7 +77,7 @@ if (!open(LOG,">>loncapa_install.log"))
           &mt('Stopping execution.')."\n";
     exit;
 } else {
-    print LOG '$Id: install.pl,v 1.60 2019/11/07 15:55:31 raeburn Exp $'."\n";
+    print LOG '$Id: install.pl,v 1.63 2020/05/01 14:13:31 raeburn Exp $'."\n";
 }
 
 #
@@ -357,7 +357,7 @@ sub get_hostname {
 }
 
 #
-# get_hostname() prompts the user to provide the server's IPv4 IP address
+# get_hostip() prompts the user to provide the server's IPv4 IP address
 #
 # If invalid input is provided, the routine is called recursively 
 # until, a valid IPv4 address is provided.
@@ -421,23 +421,26 @@ sub check_prerequisites {
 
 sub check_locale {
     my ($distro) = @_;
-    my ($fh,$langvar,$command);
+    my ($fh,$langvar,$command,$earlyout);
     $langvar = 'LANG';
     if ($distro =~ /^(ubuntu|debian)/) {
         if (!open($fh,"</etc/default/locale")) {
             print &mt('Failed to open: [_1], default locale not checked.',
                       '/etc/default/locale');
+            $earlyout = 1;
         }
     } elsif ($distro =~ /^(suse|sles)(\d+)/) {
         if (($1 eq 'sles') && ($2 >= 15)) {
             if (!open($fh,"</etc/locale.conf")) {
                 print &mt('Failed to open: [_1], default locale not checked.',
                           '/etc/locale.conf');
+                $earlyout = 1;
             }
         } else {
             if (!open($fh,"</etc/sysconfig/language")) {
                 print &mt('Failed to open: [_1], default locale not checked.',
                           '/etc/sysconfig/language');
+                $earlyout = 1;
             }
             $langvar = 'RC_LANG';
         }
@@ -446,6 +449,7 @@ sub check_locale {
             if (!open($fh,"</etc/locale.conf")) {
                 print &mt('Failed to open: [_1], default locale not checked.',
                           '/etc/locale.conf');
+                $earlyout = 1;
             }
         } elsif (!open($fh,"</etc/sysconfig/i18n")) {
             print &mt('Failed to open: [_1], default locale not checked.',
@@ -456,17 +460,21 @@ sub check_locale {
             if (!open($fh,"</etc/locale.conf")) {
                 print &mt('Failed to open: [_1], default locale not checked.',
                           '/etc/locale.conf');
+                $earlyout = 1;
             }
         } elsif (!open($fh,"</etc/sysconfig/i18n")) {
             print &mt('Failed to open: [_1], default locale not checked.',
                       '/etc/sysconfig/i18n');
+            $earlyout = 1;
         }
     } else {
         if (!open($fh,"</etc/sysconfig/i18n")) {
             print &mt('Failed to open: [_1], default locale not checked.',
                       '/etc/sysconfig/i18n');
+            $earlyout = 1;
         }
     }
+    return if ($earlyout);
     my @data = <$fh>;
     chomp(@data);
     foreach my $item (@data) {
@@ -734,6 +742,9 @@ sub chkconfig {
         if (($distro =~ /^ubuntu/) && ($version <= 8)) {
             $daemon{'cups'} = 'cupsys';
         }
+        if (($distro =~ /^ubuntu/) && ($version >= 18)) {
+            $daemon{'ntp'}    = 'chrony';
+        }
     } elsif ($distro =~ /^fedora(\d+)/) {
         my $version = $1;
         if ($version >= 15) {
@@ -3373,7 +3384,7 @@ wget http://install.loncapa.org/versions
         print &mt('LON-CAPA source files extracted.')."\n".
               &mt('It remains for you to execute the following commands:')."
 
-cd /root/loncapa-N.N     (N.N should correspond to a version number like '0.4')
+cd /root/loncapa-X.Y.Z     (X.Y.Z should correspond to a version number like '2.11.3')
 ./UPDATE
 
 ".&mt('If you have any trouble, please see [_1] and [_2]',