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#!/bin/sh
# Incremental backup using rsync(1).
[ "$USER" = root ] || exec sudo "$0" "$@"
while getopts :Fv opt; do
case $opt in
(F|v) eval "opt$opt=$opt" ;;
(*) echo "Usage: $0 [-Fv] [[host:]dir]"; exit 1 ;;
esac
done
shift $((OPTIND - 1))
dest=${1:-/.history}
date=$(date +%Y%m%d_%H%M%S)
last=$(rsync --list-only $dest/ 2>/dev/null | cut -b 47- | tail -1)
case $last in
(2*) opt_link=--link-dest=../$last;;
(*) opt_link=;;
esac
[ "$optF" ] && fsfreeze -f / && trap 'fsfreeze -u /' EXIT
rsync -HSxa$optv --exclude-from=/etc/backup/ignore $opt_link / /boot $dest/$date
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