.. index:: single: crontab(Representation) .. _crontab/1:

.. rst-class:: right

object

crontab(Representation)

• Representation - Text representation. Valid values are atom, chars, and codes. Parser and generator for user and system crontab files.

  | Availability: | logtalk_load(crontab(loader))

  | Author: Paulo Moura | Version: 1:0:0 | Date: 2026-09-09

  | Compilation flags: | static, context_switching_calls

  | Imports: | public :ref:`options <options/0>` | Uses: | :ref:`list <list/0>` | :ref:`reader <reader/0>` | :ref:`type <type/0>`

  | Remarks: | (none)

  | Inherited public predicates: | Â :ref:`options_protocol/0::check_option/1` Â :ref:`options_protocol/0::check_options/1` Â :ref:`options_protocol/0::default_option/1` Â :ref:`options_protocol/0::default_options/1` Â :ref:`options_protocol/0::option/2` Â :ref:`options_protocol/0::option/3` Â :ref:`options_protocol/0::valid_option/1` Â :ref:`options_protocol/0::valid_options/1` Â

  .. contents:: :local: :backlinks: top

Public predicates

.. index:: parse/2 .. _crontab/1::parse/2:

parse/2 ^^^^^^^^^^^

Parses a user crontab from the given source using the default options.

| Compilation flags: | static

| Template: | parse(Source,Entries) | Mode and number of proofs: | parse(++compound,--list) - one_or_error

---

.. index:: parse/3 .. _crontab/1::parse/3:

parse/3 ^^^^^^^^^^^

Parses a crontab from the given source. The supported option is format(user) (default) or format(system).

| Compilation flags: | static

| Template: | parse(Source,Entries,Options) | Mode and number of proofs: | parse(++compound,--list,+list) - one_or_error

---

.. index:: generate/2 .. _crontab/1::generate/2:

generate/2 ^^^^^^^^^^^^^^

Generates a user crontab to the given sink using the default options.

| Compilation flags: | static

| Template: | generate(Sink,Entries) | Mode and number of proofs: | generate(+compound,+list) - one_or_error

---

.. index:: generate/3 .. _crontab/1::generate/3:

generate/3 ^^^^^^^^^^^^^^

Generates a crontab to the given sink. The supported option is format(user) (default) or format(system).

| Compilation flags: | static

| Template: | generate(Sink,Entries,Options) | Mode and number of proofs: | generate(+compound,+list,+list) - one_or_error

---

.. index:: entry/1 .. _crontab/1::entry/1:

entry/1 ^^^^^^^^^^^

True if the argument is a valid crontab entry using the current text representation.

| Compilation flags: | static

| Template: | entry(Entry) | Mode and number of proofs: | entry(@nonvar) - zero_or_one

---

Protected predicates

(no local declarations; see entity ancestors if any)

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)