Files
Obsidian-Backup/code/backup_rsync_git.sh
T
2026-03-08 12:01:00 +01:00

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#!/usr/bin/env bash
set -euo pipefail
if [[ $# -gt 1 ]]; then
echo "Usage: $0 [path/to/.env]" >&2
exit 2
fi
ENV_FILE="${1:-$(dirname "$0")/.env}"
if [[ ! -f "$ENV_FILE" ]]; then
echo "Env file not found: $ENV_FILE" >&2
exit 1
fi
# shellcheck disable=SC1090
source "$ENV_FILE"
required_vars=(
RSYNC_SOURCE
RSYNC_TARGET_DIR
GIT_REPO_DIR
COMMIT_MESSAGE_PREFIX
)
for var in "${required_vars[@]}"; do
if [[ -z "${!var:-}" ]]; then
echo "Missing required env var: $var" >&2
exit 1
fi
done
mkdir -p "$RSYNC_TARGET_DIR"
repo_abs="$(cd "$GIT_REPO_DIR" && pwd)"
target_abs="$(cd "$RSYNC_TARGET_DIR" && pwd)"
case "$target_abs" in
"$repo_abs"/*) ;;
*)
echo "RSYNC_TARGET_DIR must be inside GIT_REPO_DIR" >&2
exit 1
;;
esac
rel_target="${target_abs#"$repo_abs"/}"
if [[ -n "${RSYNC_RSH:-}" ]]; then
rsync -az --delete -e "$RSYNC_RSH" "$RSYNC_SOURCE" "$RSYNC_TARGET_DIR/"
else
rsync -az --delete "$RSYNC_SOURCE" "$RSYNC_TARGET_DIR/"
fi
git -C "$GIT_REPO_DIR" add -A -- "$rel_target"
if git -C "$GIT_REPO_DIR" diff --cached --quiet -- "$rel_target"; then
exit 0
fi
timestamp="$(date '+%Y-%m-%d %H:%M:%S')"
git -C "$GIT_REPO_DIR" commit -m "$COMMIT_MESSAGE_PREFIX $timestamp" -- "$rel_target"