--- loncom/html/adm/help/tex/Domain_Crontab_Entries.tex	2013/12/04 17:52:02	1.7
+++ loncom/html/adm/help/tex/Domain_Crontab_Entries.tex	2016/08/20 17:48:11	1.9
@@ -2,7 +2,7 @@
 When LON-CAPA is installed a file named loncapa is written to /etc/cron.d.
 The frequency and timing of execution of scripts included in this
 loncapa crontab file can be modified to suit the needs of your domain.
-The scripts, which are all run as the user 'www', are as follows: 
+The scripts, which are all run as the user `www', are as follows: 
 
 \begin{itemize}
 \item \emph{/home/httpd/perl/loncron} run daily at 5.10 am updates
@@ -15,12 +15,22 @@ to the LON-CAPA content repository. Conn
 re-evaluated by loncron, in case some machines had become unavailable
 within the last 24 hours, and had therefore been flagged as temporarily
 offline.
+\item \emph{/home/httpd/perl/checkforupdates.pl} run daily at 4.10 am 
+retrieves checksums/versions for LON-CAPA perl modules and perl script
+files for the version of LON-CAPA on your server, from the authoritative
+server(s) in the LON-CAPA cluster to which your domain belongs. If 
+discrepancies are found (version and/or checksum) for installed files,
+or if files are missing, or extra (now obsolete) files are present this will
+be recorded in a log file, and also sent in an e-mail to recipients specified 
+for the domain.  The availability of a newer release of LON-CAPA on
+the install site -- \emph{http://install.loncapa.org/} -- will also be checked,
+and notification will be icluded in the e-mail if LON-CAPA should be updated. 
 \item \emph{/usr/local/loncapa/bin/CHECKRPMS} runs every other day at 3.10
 am. This file automates the process of checking for available updates
 to LON-CAPA systems. The distprobe script, installed as a part of
 LON-CAPA, is used to determine the Linux distribution installed on
 the server, which in turn dictates which utility (yum, up2date, you
-or rug) is called to perform the package check.
+rug, apt-get or zypper) is called to perform the package check.
 \item \emph{/home/httpd/perl/searchcat.pl} run every other day at 1.10 am
 traverses the LON-CAPA resource directory in a domain and gathers
 metadata which are entered into a SQL database. The script will repopulate
@@ -30,7 +40,7 @@ used to store metadata for publicly acce
 user information needed for user searches in a LON-CAPA domain. 
 \item \emph{/home/httpd/perl/cleanup\_database.pl} run daily at 2.13 am
 drops tables from the LON-CAPA MySQL database if their comment is
-'temporary' and they have not been modified in a given time (default
+`temporary' and they have not been modified in a given time (default
 is 2 days).
 \item \emph{/home/httpd/perl/refresh\_courseids\_db.pl} run daily at 2.50 am 
 refreshes the database file (stored on a library server) queried when a