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#!/bin/bash -e
# Copyright © Sébastien Luttringer
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
[[ -t 1 ]] && set -x
UPSTREAM='rsync://pkgbuild.com/packages/'
LOCKFILE=~/."${0##*/}".lock
ARMBASE=/srv/ftp/archlinux/arm
SNAPR="$(date +%Y/%m/%d)"
SNAP="$ARMBASE/$SNAPR"
LAST="$ARMBASE/last"
# we lock!
exec 9> "$LOCKFILE"
flock -n 9 || { echo 'Locking Failed' >&2; exit 1; }
# nice umask
umask 022
# ensure destination exists
[[ -d $SNAP ]] || mkdir -p "$SNAP"
# Rsync from master using last sync
# We must use absolute path with --link-dest to avoid errors
rsync -rltH --link-dest="$LAST/" --exclude '*/.*' "$UPSTREAM" "$SNAP/"
# only to have a quick check of sync in listdir
touch "$SNAP"
# update last symlink only when last rsync is successful (bash -e)
# use hardlink to optimize space usage
# currently disabled because hardlink segfault