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92 lines
2.8 KiB
92 lines
2.8 KiB
4 years ago
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#! /bin/bash
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###############################################################################
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#
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# YSFHostsupdate.sh
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#
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# Copyright (C) 2016 by Tony Corbett G0WFV
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# Adapted to YSFHosts by Paul Nannery KC2VRJ on 6/28/2016 with all crdeit
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# to G0WFV for the orignal script.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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###############################################################################
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#
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# On a Linux based system, such as a Raspberry Pi, this script will perform all
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# the steps required to maintain the YSFHosts.txt (or similar) file for you.
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#
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# It is designed to run from crontab and will download the YSFHosts from the
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# master ysfreflector.de database and optionally keep a backup of previously
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# created files for you.
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#
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# It will also prune the number of backup files according to a value specified
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# by you in the configuration below.
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#
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# To install in root's crontab use the command ...
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#
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# sudo crontab -e
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#
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# ... and add the following line to the bottom of the file ...
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#
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# 0 0 * * * /path/to/script/YSFHostsupdate.sh 1>/dev/null 2>&1
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#
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# ... where /path/to/script/ should be replaced by the path to this script.
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#
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###############################################################################
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#
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# CONFIGURATION
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#
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# Full path to YSFHosts
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YSFHOSTS=/path/to/YSFHosts.txt
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# How many YSFHosts files do you want backed up (0 = do not keep backups)
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YSFHOSTSFILEBACKUP=1
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###############################################################################
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#
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# Do not edit below here
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#
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###############################################################################
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# Check we are root
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if [ "$(id -u)" != "0" ]
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then
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echo "This script must be run as root" 1>&2
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exit 1
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fi
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# Create backup of old file
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if [ ${YSFHOSTSFILEBACKUP} -ne 0 ]
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then
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cp ${YSFHOSTS} ${YSFHOSTS}.$(date +%d%m%y)
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fi
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# Prune backups
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BACKUPCOUNT=$(ls ${YSFHOSTS}.* | wc -l)
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BACKUPSTODELETE=$(expr ${BACKUPCOUNT} - ${YSFHOSTSFILEBACKUP})
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if [ ${BACKUPCOUNT} -gt ${YSFHOSTSFILEBACKUP} ]
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then
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for f in $(ls -tr ${YSFHOSTS}.* | head -${BACKUPSTODELETE})
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do
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rm -f $f
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done
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fi
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# Generate YSFHosts.txt file
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curl https://register.ysfreflector.de/export_csv.php > ${YSFHOSTS}
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exit 0
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