The following issue has been SUBMITTED.
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https://austingroupbugs.net/view.php?id=1866
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Reported By: steffen
Assigned To:
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Project: 1003.1(2024)/Issue8
Issue ID: 1866
Category: Shell and Utilities
Type: Enhancement Request
Severity: Editorial
Priority: normal
Status: New
Name: steffen
Organization:
User Reference:
Section: crontab
Page Number: 2749 ff.
Line Number: 90909 ff.
Interp Status: ---
Final Accepted Text:
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Date Submitted: 2024-10-31 00:28 UTC
Last Modified: 2024-10-31 00:28 UTC
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Summary: crontab: does not support Utility Syntax Guideline
13
Description:
On a NetBSD i stumbled over an experienced user failing to write portable
crontab scripts because POSIX crontab does not support guideline 13 which
says:
For utilities that use operands to represent files to be opened for
either reading
or writing, the '−' operand should be used to mean only standard input
(or
standard output when it is clear from context that an output file is
being
specified) or a file named −.
Looking around we see:
<code>
# dcron (Linux plus)
$ crontab --help
crontab 4.5
crontab file [-u user] replace crontab from file
crontab - [-u user] replace crontab from stdin
...
# busybox
$ busybox.static crontab --help
BusyBox v1.37.0.git (2024-04-20 23:25:28 CEST) multi-call binary.
Usage: crontab [-c DIR] [-u USER] [-ler]|[FILE]
...
FILE Replace crontab by FILE ('-': stdin)
# OpenBSD
#?128|kent:open-src.git$ git show
origin/master:usr.sbin/cron/crontab.1|mandoc|v
crontab [-u user] file
crontab [-e | -l | -r] [-u user]
The first form of this command is used to install a new crontab from
some
named file, or standard input if the pseudo-filename ‘-’ is
given.
# NetBSD
#?0|kent:net-src.git$ git show
origin/trunk:external/bsd/cron/dist/crontab.1|mandoc|v
crontab [-u user]
crontab [-elr]
#
The first form of this command is used to install a new crontab from
some
named file or standard input if the pseudo-filename “-” is given.
# FreeBSD
#?128|kent:free-src.git$ git show
origin/main:usr.sbin/cron/crontab/crontab.1|mandoc|v
crontab [-u user] file
crontab [-u user] { -l | -r [-f] | -e }
The first form of this command is used to install a new crontab from
some
named file or standard input if the pseudo-filename ‘-’ is given.
# (ditto DragonFlyBSD)
</code>
So that looks good.
Solaris aka OpenIndiana 2024 not:
<code>
#?0|oi-2024:steffen$ crontab
^C#?1|oi-2024:steffen$ crontab -
crontab: can't open your crontab file.
</code>
But implementation should be trivial i would think. (Or replacing with
dcrond.)
Desired Action:
Please support Utility Syntax Guideline for crontab.
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Issue History
Date Modified Username Field Change
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2024-10-31 00:28 steffen New Issue
2024-10-31 00:28 steffen Name => steffen
2024-10-31 00:28 steffen Section => crontab
2024-10-31 00:28 steffen Page Number => 2749 ff.
2024-10-31 00:28 steffen Line Number => 90909 ff.
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