CRONTAB
Generated by scripts/gen-format-pages.py from docs/data/format-metadata/, FILE_FORMATS.csv and docs/formats-master.csv. Do not edit by hand: change the source, then run the script.
Crontab Preview.
At a glance
| Purpose | A crontab: scheduled commands with minute, hour, day, month and weekday fields, and environment lines. |
| Extensions | .crontab |
| Poka parser | poka-crontab |
| Viewer | poka-table-viewer |
| Depth tier | Parser with a shared viewer (see Depth tiers) |
| Breadth tier | B2 Broad (see Breadth tiers) |
How much Poka reads
B2 Broad. The common content of the current and the common older versions is decoded. Some named features or versions are not, and are listed.
Confidence: medium (the reviewer read the code). Basis: Reviewed 2026-10-26: read parsers/poka-crontab/src/main.rs (176 lines) and plugin.json. No unit tests or tests/samples.rs; the corpus has no .crontab sample. Covers .crontab. The table lists every job with its five schedule fields, the user (system crontab) and the command, with @-shortcuts expanded into the schedule columns where present (judgement from the code). Judgement: B2: every entry is shown; the gaps are limits, redaction by design and fields left raw.
What Poka does not read
- Schedules are shown as written, not explained or turned into next run times
- Environment lines are not shown (judgement from the code)
- Only the first 500 jobs are listed
Libraries
Libraries Poka uses or has assessed for this format, with the status, licence and language the registry records.
- python-crontab (candidate; LGPL-3.0; Python; https://pypi.org/pypi/python-crontab) — Reads and writes whole crontab files; no support for W, L, # or ? symbols per search snippet
- cronp (candidate; MIT OR Apache-2.0; Rust; https://docs.rs/crate/cronp/0.2.0) — no_std cron expression parser with Vixie dialect (5 fields, @reboot); parses expressions, not whole files
- cronexpr (candidate; Apache-2.0; Rust; https://docs.rs/crate/cronexpr/latest) — Parses crontab expressions and computes next times; expression-level only
Sources
- parsers/poka-crontab/src/main.rs
- parsers/poka-crontab/plugin.json