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38 lines
1.1 KiB
Plaintext
38 lines
1.1 KiB
Plaintext
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#!/bin/bash
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# Script to perform incremental backups using rsync
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# It is often ran as crontab rule for automated backup solution
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#
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# This script will respect .rsync-filter files, which can be used
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# to define custom exclude rules for files/dirs in which it is present
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if [ $# -lt 2 ]; then
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echo "Invalid amount of arguments passed!"
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echo "Arguments: [Source path] [Backup path]"
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echo " Source path: directory to be backed up, usually '/'"
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echo " Backup path: directory to back up to (destination), usually mounted drive"
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exit
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fi
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SOURCE_DIR="$1"
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BACKUP_DIR="$2"
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DATETIME="$(date '+%Y-%m-%d_%H:%M:%S')"
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BACKUP_PATH="${BACKUP_DIR}/${DATETIME}"
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LATEST_LINK="${BACKUP_DIR}/latest"
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mkdir -p "$BACKUP_DIR"
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rsync -avHAXS \
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--delete \
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--filter='dir-merge /.rsync-filter' \
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--link-dest "${LATEST_LINK}" \
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"${@:3}" "${SOURCE_DIR}/" "${BACKUP_PATH}"
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# Only attempt to override the symlink if we made new backup_path
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# user might've passed --dry-run option in which case we wouldn't
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# want to override latest symlink to non-existent location
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if [ -d "${BACKUP_PATH}" ]; then
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rm "${LATEST_LINK}" 2>/dev/null
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ln -s "${BACKUP_PATH}" "${LATEST_LINK}"
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fi
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