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Matthias Johnson 2026-02-14 11:34:00 -07:00
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CLAUDE.md
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@ -18,25 +18,31 @@ No build step. The script requires `bash`, `systemctl`, and optionally `notify-s
The script has two modes controlled by CLI flags:
- **Job creation** (`-t <time> [-c <cmd> | -f <script> | stdin]`): Generates a systemd `.service` + `.timer` pair with a 6-char hex short ID, reloads the daemon, and enables/starts the timer. Time specs are parsed via `date -d` or passed through as systemd OnCalendar values. One-time jobs get `Persistent=false` and `RemainAfterElapse=no` (auto-unload after firing).
- **Job creation** (`-t <time> [-c <cmd> | -f <script> | stdin]`): Generates a systemd `.service` + `.timer` pair with a 6-char hex short ID, reloads the daemon, and enables/starts the timer. Time specs are parsed via `parse_time` which handles natural language (`every 5 minutes`), `date -d` relative/absolute times, and raw systemd OnCalendar values. One-time jobs get `Persistent=false` and `RemainAfterElapse=no` (auto-unload after firing). All jobs log stdout/stderr to the journal via `SyslogIdentifier`.
- **Management** (`-E`, `-L`, `-S`, `-C` — mutually exclusive):
- `-E`: Opens `$EDITOR` with a tab-separated crontab (`ID SCHEDULE COMMAND`). On save, diffs against the original to apply creates (ID=`new`), deletes (removed lines), and updates (changed schedule/command). Legacy jobs without IDs get one auto-assigned.
- `-L [filter]`: Query `journalctl` logs for managed jobs.
- `-S`: Show timer status via `systemctl`, including short IDs.
- **Management** (`-P`, `-R`, `-E`, `-L`, `-S`, `-C` — mutually exclusive):
- `-P <id>` / `-R <id>`: Pause (stop+disable) or resume (enable+start) a job's timer.
- `-E`: Opens `$EDITOR` with a pipe-separated crontab (`ID | SCHEDULE | COMMAND`). On save, diffs against the original to apply creates (ID=`new`), deletes (removed lines), updates (changed schedule/command), and pause/resume (comment/uncomment lines).
- `-L [filter]`: Query `journalctl` logs for managed jobs (both unit messages and command output).
- `-S`: Show timer status via `systemctl`, including short IDs and disabled state.
- `-C`: Interactively clean up elapsed one-time timers (removes unit files from disk).
Key functions: `parse_time` (time spec → OnCalendar), `create_job` (generates unit files), `edit_jobs` (crontab-style edit with diff-and-apply), `get_managed_services`/`get_managed_timers` (find tagged units), `clean_jobs` (remove elapsed one-time timers).
Key functions: `parse_time` (time spec → OnCalendar), `create_job` (generates unit files), `edit_jobs` (crontab-style edit with diff-and-apply), `get_managed_services`/`get_managed_timers` (find tagged units), `clean_jobs` (remove elapsed one-time timers), `pause_job`/`resume_job` (disable/enable timers).
## Testing
There are no automated tests. Test manually with systemd user timers:
```bash
./systab -t "in 1 minute" -c "echo test"
./systab -t "every 5 minutes" -c "echo test"
./systab -S
./systab -L
./systab -P <id>
./systab -R <id>
./systab -C
```
## Notes
- ShellCheck can be used for linting: `shellcheck systab`.
- Edit mode uses `|` as the field delimiter (not tabs or spaces) to allow multi-word schedules.
- Journal logs are queried with `USER_UNIT` OR `SYSLOG_IDENTIFIER` to capture both systemd messages and command output.