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30 lines
832 B
Bash
30 lines
832 B
Bash
#!/usr/bin/env bash
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# A script to perform incremental backups with rsync
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# Source: https://linuxconfig.org/how-to-create-incremental-backups-using-rsync-on-linux
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set -o errexit
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set -o nounset
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set -o pipefail
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readonly BACKUP_DIR="/mnt/backup"
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readonly DATETIME
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DATETIME="$(date '+%Y-%m-%d_%H:%M:%S')"
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readonly BACKUP_PATH="${BACKUP_DIR}/${DATETIME}"
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readonly LATEST_LINK="${BACKUP_DIR}/latest"
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readonly TEMP_DIR
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TEMP_DIR=$(mktemp -d || echo "Failed to make temp dir"; exit 1)
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chmod 700 "${TEMP_DIR}"
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trap 'rm -rf "${TEMP_DIR}"; exit 0' 0 1 2 3 15
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mkdir -p "${BACKUP_DIR}"
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while read -r line; do
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rsync -aAX "$line" "${TEMP_DIR}";
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done </etc/rsync-includes.txt
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rsync -av --delete "${TEMP_DIR}/" --link-dest "${LATEST_LINK}" --exclude=".cache" "${BACKUP_PATH}"
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rm -rf "${LATEST_LINK}"
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ln -s "${BACKUP_PATH}" "${LATEST_LINK}"
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