NAME
pause-firefox - Pause (kill -STOP) Firefox
VERSION
This document describes version 0.022 of pause-firefox (from Perl distribution App-FirefoxUtils), released on 2023-10-28.
SYNOPSIS
pause-firefox --help (or -h, -?)
pause-firefox --version (or -v)
pause-firefox [--cmndline-pat=re_from_str] [--debug|--log-level=level|--quiet|--trace|--verbose] [--exec-pat=re_from_str] [--fname-pat=re_from_str] [--format=name|--json] [--(no)naked-res] [--page-result[=program]|--view-result[=program]] [--pid-pat=re_from_str] [(--user=unix::uid::exists)+|--users-json=json]
DESCRIPTION
A modern browser now runs complex web pages and applications. Despite browser's power management feature, these pages/tabs on the browser often still eat considerable CPU cycles even though they only run in the background. Pausing (kill -STOP) the browser processes is a simple and effective way to stop CPU eating on Unix and prolong your laptop battery life. It can be performed whenever you are not using your browser for a little while, e.g. when you are typing on an editor or watching a movie. When you want to use your browser again, simply unpause (kill -CONT) it.
OPTIONS
*
marks required options.
Main options
- --user=s@
-
Kill browser processes that belong to certain user(s) only.
Can be specified multiple times.
- --users-json=s
-
Kill browser processes that belong to certain user(s) only (JSON-encoded).
See
--user
.
Filtering options
- --cmndline-pat=s
-
Filter processes using regex against their cmndline.
If one of the
*-pat
options are specified, then instead of the default heuristic rules to find the browser processes, these*-pat
options are solely used to determine which processes are the browser processes. - --exec-pat=s
-
Filter processes using regex against their exec.
If one of the
*-pat
options are specified, then instead of the default heuristic rules to find the browser processes, these*-pat
options are solely used to determine which processes are the browser processes. - --fname-pat=s
-
Filter processes using regex against their fname.
If one of the
*-pat
options are specified, then instead of the default heuristic rules to find the browser processes, these*-pat
options are solely used to determine which processes are the browser processes. - --pid-pat=s
-
Filter processes using regex against their pid.
If one of the
*-pat
options are specified, then instead of the default heuristic rules to find the browser processes, these*-pat
options are solely used to determine which processes are the browser processes.
Logging options
- --debug
-
Shortcut for --log-level=debug.
- --log-level=s
-
Set log level.
By default, these log levels are available (in order of increasing level of importance, from least important to most):
trace
,debug
,info
,warn
/warning
,error
,fatal
. By default, the level is usually set towarn
, which means that log statements with levelinfo
and less important levels will not be shown. To increase verbosity, chooseinfo
,debug
, ortrace
.For more details on log level and logging, as well as how new logging levels can be defined or existing ones modified, see Log::ger.
- --quiet
-
Shortcut for --log-level=error.
- --trace
-
Shortcut for --log-level=trace.
- --verbose
-
Shortcut for --log-level=info.
Output options
- --format=s
-
Choose output format, e.g. json, text.
Default value:
undef
Output can be displayed in multiple formats, and a suitable default format is chosen depending on the application and/or whether output destination is interactive terminal (i.e. whether output is piped). This option specifically chooses an output format.
- --json
-
Set output format to json.
- --naked-res
-
When outputing as JSON, strip result envelope.
Default value:
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]
- --page-result
-
Filter output through a pager.
This option will pipe the output to a specified pager program. If pager program is not specified, a suitable default e.g.
less
is chosen. - --view-result
-
View output using a viewer.
This option will first save the output to a temporary file, then open a viewer program to view the temporary file. If a viewer program is not chosen, a suitable default, e.g. the browser, is chosen.
Other options
COMPLETION
This script has shell tab completion capability with support for several shells.
bash
To activate bash completion for this script, put:
complete -C pause-firefox pause-firefox
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.
tcsh
To activate tcsh completion for this script, put:
complete pause-firefox 'p/*/`pause-firefox`/'
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).
other shells
For fish and zsh, install shcompgen as described above.
HOMEPAGE
Please visit the project's homepage at https://metacpan.org/release/App-FirefoxUtils.
SOURCE
Source repository is at https://github.com/perlancar/perl-App-FirefoxUtils.
AUTHOR
perlancar <perlancar@cpan.org>
CONTRIBUTING
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, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.
COPYRIGHT AND LICENSE
This software is copyright (c) 2023, 2022, 2021, 2020, 2019 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.
BUGS
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-FirefoxUtils
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.