dateconv - Convert date from one format to another
This document describes version 0.127 of dateconv (from Perl distribution App-DateUtils), released on 2021-09-06.
Usage:
% dateconv [--format=name|--json] [--(no)naked-res] [--page-result[=program]|--view-result[=program]] [--to=str] [-a] -- <date>
* marks required options.
*
Can also be specified as the 1st command-line argument.
Default value:
"epoch"
Valid values:
["epoch","ymd","iso8601","ALL"]
Shortcut for --to=ALL.
See --to.
--to
Choose output format, e.g. json, text.
undef
Set output format to json.
When outputing as JSON, strip result envelope.
0
By default, when outputing as JSON, the full enveloped result is returned, e.g.:
[200,"OK",[1,2,3],{"func.extra"=>4}]
The reason is so you can get the status (1st element), status message (2nd element) as well as result metadata/extra result (4th element) instead of just the result (3rd element). However, sometimes you want just the result, e.g. when you want to pipe the result for more post-processing. In this case you can use `--naked-res` so you just get:
[1,2,3]
Filter output through a pager.
View output using a viewer.
Display help message and exit.
Display program's version and exit.
This script has shell tab completion capability with support for several shells.
To activate bash completion for this script, put:
complete -C dateconv dateconv
in your bash startup (e.g. ~/.bashrc). Your next shell session will then recognize tab completion for the command. Or, you can also directly execute the line above in your shell to activate immediately.
It is recommended, however, that you install modules using cpanm-shcompgen which can activate shell completion for scripts immediately.
To activate tcsh completion for this script, put:
complete dateconv 'p/*/`dateconv`/'
in your tcsh startup (e.g. ~/.tcshrc). Your next shell session will then recognize tab completion for the command. Or, you can also directly execute the line above in your shell to activate immediately.
It is also recommended to install shcompgen (see above).
For fish and zsh, install shcompgen as described above.
Convert "today" to epoch:
% dateconv today 1630886400
Convert epoch to ymd:
% dateconv 1463702400 --to ymd 2016-05-20
Convert epoch to iso8601:
% dateconv 1580446441 --to iso8601 2020-01-31T04:54:01Z
Convert iso8601 to epoch:
% dateconv 2020-01-31T04:54:01Z --to epoch 1580446441
Show all possible conversions:
% dateconv now --to ALL +---------+----------------------+ | key | value | +---------+----------------------+ | epoch | 1630934937 | | iso8601 | 2021-09-06T13:28:57Z | | ymd | 2021-09-06 | +---------+----------------------+
Please visit the project's homepage at https://metacpan.org/release/App-DateUtils.
Source repository is at https://github.com/perlancar/perl-App-DateUtils.
perlancar <perlancar@cpan.org>
To contribute, you can send patches by email/via RT, or send pull requests on GitHub.
Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:
% prove -l
If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla plugin and/or Pod::Weaver::Plugin. Any additional steps required beyond that are considered a bug and can be reported to me.
This software is copyright (c) 2021, 2020, 2019, 2017, 2016, 2015 by perlancar <perlancar@cpan.org>.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-DateUtils
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
To install App::DateUtils, copy and paste the appropriate command in to your terminal.
cpanm
cpanm App::DateUtils
CPAN shell
perl -MCPAN -e shell install App::DateUtils
For more information on module installation, please visit the detailed CPAN module installation guide.