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71 lines
2.2 KiB
71 lines
2.2 KiB
#!/bin/sh
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# This is a backup script that takes snapshots of your device
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# In a Time Machine like fashion. You can add this to root's
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# crontab for regular backups
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# Config
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readonly SSH_HOST=192.168.1.34
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readonly SSH_USER=pi
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readonly SSH_KEY="/home/yigit/.ssh/id_skeleton"
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readonly BACKUP_DESTINATION="~/snapshots/backups"
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readonly RSYNC_PROFILE="$SSH_USER@$SSH_HOST:$BACKUP_DESTINATION"
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[ $(id -u) != "0" ] && printf "This program must be run as root!\n" && exit
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alias ssh_cmd="ssh -i \"$SSH_KEY\" $SSH_USER@$SSH_HOST"
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[ -f "$XDG_CACHE_HOME/dbus_settings" ] && "$XDG_CACHE_HOME/dbus_settings" # Load the dbus settings for current session
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displays="$(ps -u $(id -u) -o pid= \
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| xargs -I PID -r cat /proc/PID/environ 2> /dev/null \
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| tr '\0' '\n' \
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| grep ^DISPLAY=: \
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| sort -u \
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| xargs \
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| cut -d ":" -f2)"
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notify() {
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IFS="\n"
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for x in $displays; do
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export DISPLAY=$x
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notify-send --app-name="$1" "$2"
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done ;
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}
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notify " Periodic backup" "Backup is starting"
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DEVICE=tatooine
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OPT="-aPh"
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SNAP="$RSYNC_PROFILE/$DEVICE/"
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date=$(date "+%d.%m.%Y_%I:%M")
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older=$(date --date="4 days ago" "+%d.%m.%Y_%I:%M")
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# You should enter absolute paths
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DIRS="/home/yigit
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/etc
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/var/lib
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/var/spool
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/usr/src/linux"
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# Check whether backup server is available on network
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timeout 3 ssh -i "$SSH_KEY" $SSH_USER@$SSH_HOST id < /dev/null > /dev/null 2> /dev/null || echo "SSH Failed." || exit
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ssh -i "$SSH_KEY" $SSH_USER@$SSH_HOST rm -rf "$BACKUP_DESTINATION/$DEVICE/$older" > /dev/null 2> /dev/null
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# Run rsync to create snapshot
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while IFS= read -r DIR
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do
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LINK="--link-dest=/home/$SSH_USER/snapshots/tatooine/last$DIR/"
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ssh -i "$SSH_KEY" $SSH_USER@$SSH_HOST mkdir -p "$BACKUP_DESTINATION/$DEVICE/$date$DIR" < /dev/null
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rsync --exclude '.cache' "$@" -e "ssh -i $SSH_KEY" $OPT "$LINK" "$DIR/" "${SNAP}$date$DIR/"
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done << EOF
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$DIRS
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EOF
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# Remove symlink to previous snapshot
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ssh_cmd rm -f "$BACKUP_DESTINATION/$DEVICE/last" < /dev/null
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# Create new symlink to latest snapshot for the next backup to hardlink
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ssh -i "$SSH_KEY" $SSH_USER@$SSH_HOST ln -s "$BACKUP_DESTINATION/$DEVICE/$date" "$BACKUP_DESTINATION/$DEVICE/last" < /dev/null
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# pidof slock > /dev/null && { # Shutdown if screen inhibition is enabled
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# shutdown -h now
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# }
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