[CentOS] Fetchmail question

R P Herrold herrold at centos.org
Fri Dec 18 20:49:23 UTC 2009


On Fri, 18 Dec 2009, Stephen Harris wrote:

> You can always run multiple copies of fetchmail in the background if you
> want parallel fetching

or run just one tenth of those RC files (when well numbered) 
present each time a script is invoked, if you are not in a 
hurry to retrieve email from side accounts, and want to be 
kind to the remote pop hosts

-- Russ herrold

#!/bin/sh
#
#	~/bin/get-stray-email.sh
#	$Id: get-stray-fetchmail.sh,v 1.3 2009/10/23 13:48:47 herrold Exp herrold $
#	License: GPLv3+
#	bug reports to:  info at owlriver.com
#
#	use fetchmail with custom rc files, and pull
#	upgrade to use a 0-9 rotor to spread load
#
export PATH='/usr/java/latest/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:~/bin/:/home/herrold/bin:~/bin/'
#
#	the config files live in a protected directory
export FETCHRC=".fetchmail"
cd 
[ ! -d $FETCHRC/ ] && {
 	mkdir $FETCHRC/
 	chmod 700 $FETCHRC
 	}
#
#	defaults, and options parsing
#	need to more into a while loop, and add a scan exit
QUIET="--silent "
DEBUG=""
[ "x$1" = "x-d" ] && {
 	export DEBUG="y "
 	shift 1
 	}
[ "x$1" = "x-v" ] && {
 	export QUIET=""
 	export VERBOSE="--verbose "
 	shift 1
 	}
[ "x${QUIET}" = "x" ] && {
 	export QUIET=""
 	export VERBOSE="--verbose "
 	}
#
#	option $1 support being refactored; out for the moment
#	Remembering Jimi ...
[ "xsix" = "x9" ] && {
#
#	SUFFIX works when we cd into $FETCHRC and have the file naming set up 
#	right
SUFFIX=".fetchmailrc-gmail"
[ "x$1" != "x" ] && {
 	export SUFFIX=`echo ".fetchmailrc-gmail$1"`
#	make sure we have one
 	[ ! -e ~/$FETCHRC/$SUFFIX ] && export SUFFIX=""
#
#	actually we need to stop scanning options here
 	shift 1
 	}
 	}
#
#	main body
#	New model is to run a rotor
[ ! -e $FETCHRC/.fetch-rotor ] && touch $FETCHRC/.fetch-rotor
LASTRUN=` ( echo -n "0" ; cat $FETCHRC/.fetch-rotor | \
 	perl -p -e "tr/[0-9]//cd" ) `
[ "0$LASTRUN" -lt 1 ] && echo "00" > $FETCHRC/.fetch-rotor
LASTRUN=` ( ( cat $FETCHRC/.fetch-rotor  | \
 	perl -p -e "tr/[0-9]//cd" ; echo " + 0" ) | bc ) `
[ "x${DEBUG}" != "x" ] && echo "Rotor is: $LASTRUN" 1>&2
#
#	main loop
for i in ` ls -1 $FETCHRC/.fetchmailrc-*[0-9] | grep "${LASTRUN}$" `; do
 	[ "x${VERBOSE}" != "x" ] && {
 		echo "i: $i" 1>&2
 		}
 	[ -e ${i} ] && fetchmail -f ${i} -a ${QUIET} ${VERBOSE} || {
 		echo "Error: non-zero return code on: $i " 1>&2
 		grep -v "^#" $i | grep -v "[ ]" 1>&2
 		grep "user" $i 1>&2
 		}
 	sleep 3
#	sleep 30
done
#
LASTRUN=` echo "${LASTRUN} + 1" | bc | rev | cut -c 1 | rev`
#	echo "new LASTRUN: $LASTRUN"
echo "$LASTRUN" > $FETCHRC/.fetch-rotor
#
#
exit 0
#
#
#	This is a sample ~/.fetchmail/.
cat - << END > /dev/null
#
#	gmail pop works
#	sample fetchmail -f config file
poll pop.gmail.com with proto pop3:
 	port 995
 	timeout 60
 	user "GMAILUSERID at gmail.com" there with
 	password "GMAILPASSWORD"
 	is LOCALUSERID here
 	fetchall
 	expunge 50
 	options ssl
#
END
#
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