ba10e70830
Invoking via ./backup.sh symlink made dirname escape the repo and sqlite created an empty DB in the parent dir. Now uses readlink -f with a location check plus a guard that refuses to run without ./whaleprep.db.
23 lines
1 KiB
Bash
Executable file
23 lines
1 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Daily SQLite backup: VACUUM INTO a timestamped copy, keep 7 days.
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# Usage: ./deploy/termux-backup.sh (run from repo root; safe while live)
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# Termux has no cron, so run this from Termux:Tasker, a daily alarm via
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# Termux:API, or manually. One line, one snapshot.
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# Resolve symlinks first: this script may be invoked as ./backup.sh (a
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# symlink at repo root), in which case plain dirname would escape the repo
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# and sqlite would create an empty DB in the wrong place.
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HERE="$(dirname "$(readlink -f "$0")")"
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if [ "$(basename "$HERE")" = "deploy" ]; then
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cd "$HERE/.."
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else
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cd "$HERE"
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fi
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[ -f ./whaleprep.db ] || { echo "no ./whaleprep.db here ($(pwd)) — aborting"; exit 1; }
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OUT="./backups/whaleprep-$(date +%F).db"
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mkdir -p ./backups
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# VACUUM INTO refuses to overwrite, so remove today's snapshot first —
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# otherwise re-runs silently keep stale data.
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rm -f "$OUT"
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sqlite3 ./whaleprep.db "VACUUM INTO '$OUT';"
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ls -t ./backups/whaleprep-*.db | tail -n +8 | xargs -r rm -f
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echo "backup -> $OUT ($(du -h "$OUT" | cut -f1))"
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