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+#!/bin/sh
+#
+# maildaemon, fetchmail driver intended to be invoked hourly by cron.
+#
+# Script by Larry Fahnoe <fahnoe@kegworks.mn.org>, who writes:
+#
+# This is intended to support a standalone system (NeXTSTEP in this case) 
+# which makes manual, on-demand PPP connections to the outside world.  The
+# script is run as the target user from cron on an hourly basis.  If it
+# finds a PPP link is up (it sees routes on a PPP interface), fetchmail is
+# invoked.  If the link is not up, and the hour is in the list of hours that
+# connections should be made, the link is brought up and fetchmail is
+# invoked.  The program or script used to bring up the link should return an
+# exit status which reflects whether the link actually came up. 
+# 
+# I wrote this because I wanted to be able to have control over the amount
+# of time spent connected to an ISP and yet still be able to poll for mail
+# at intervals that made sense to me.  One limitation of this script is that
+# it does not take into account that an existing PPP link might be going to
+# a different ISP or network.
+#
+
+# You'll have to configure these
+USER=fahnoe			# your name
+HOME=/Users/fahnoe		# home directory (for the logfile)
+FORCEHOURS="05 09 13 17"	# when to bring the link up if it's not already
+SERVER=mailserver.isp.com	# mailserver host name
+
+# Link initialization and wrapup scripts (you may have to configure these)
+PPPUP="/usr/local/bin/pppup $SERVER"
+PPPDOWN=/usr/local/bin/pppdown
+
+PATH=/usr/local/bin:/bin:/usr/ucb:/usr/bin:/usr/etc
+export PATH USER HOME
+
+LOG=$HOME/log/maildaemon.log
+
+# get the mail, depends on $HOME/.fetchmailrc and $USER
+FETCHMAIL( ) {
+    ( echo "`date` $SERVER"
+      fetchmail $SERVER
+      if [ $? -gt 1 ]
+      then
+          echo "`date` $SERVER (evil things happened in fetchmail)"
+      fi
+    ) >> $LOG 2>&1
+}
+
+# if the link is already up, check for mail.
+# if the hour is in FORCEHOURS, force the link up and check for mail.
+(netstat -rn | awk '{ print $6 }' | grep ppp[0-9] > /dev/null)
+if [ $? -eq 0 ]
+then
+    FETCHMAIL
+else
+    hour=`date | sed -e 's/:/ /g' | awk '{ print $4 }'`
+    for x in $FORCEHOURS
+    do
+        if [ $hour = $x ]
+        then
+            $PPPUP
+            if [ $? -eq 0 ]
+            then
+                FETCHMAIL
+                $PPPDOWN
+            else
+                echo "`date` $SERVER (link establishment failure)" >> $LOG
+                exit 1
+            fi
+        fi
+    done
+fi
+
+exit
+