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43 lines
1.3 KiB
43 lines
1.3 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=192.168.1.8
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readonly SSH_USER=yigit
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readonly SSH_KEY="/home/yigit/.ssh/id_skeleton"
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readonly RSYNC_PROFILE="$SSH_USER@$SSH_HOST:~/snapshots"
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alias ssh_cmd="ssh -i \"$SSH_KEY\" $SSH_USER@$SSH_HOST"
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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=$(date "+%I:%M-%d.%m.%Y")
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# You should enter absolute paths
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DIRS="/home/yigit
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/etc
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/var/lib
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/var/spool
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/usr/src/linux"
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# Check whether backup server is available on network
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timeout 3 ssh -i "$SSH_KEY" $SSH_USER@$SSH_HOST id < /dev/null > /dev/null 2> /dev/null || echo "SSH Failed." || exit
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# 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 "~/snapshots/$DEVICE/$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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$DIRS
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EOF
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# Remove symlink to previous snapshot
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ssh_cmd rm -f "~/snapshots/$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 "~/snapshots/$DEVICE/$date" "~/snapshots/$DEVICE/last" < /dev/null
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