Display command line shell examples in Trac wiki pages


This is a wiki processor to display command line shell examples in Trac wiki pages.

This plugin has only been tested on Trac 0.12, and may work for later versions.

A typical example might look like this:

(full example showing how to use openssl to connect to a pops mail server)
$ openssl s_client -connect
depth=0 /C=US/ST=Nowhere/O=Foo/OU=bar/
+OK Dovecot ready. <>
$$ user {username}
$$ pass {password}
+OK Logged in.
$$ stat
+OK 509 15659197
$$ quit
+OK Logging out.

Produces output like this:

Example of processed text

Additional examples are available here.

Technical Details

This is a WikiProcessor so it is used with the standard #! notation. This processor injects css code into Trac, so you should get formatted output by default. Any tagged code is inside a span element, and the following classes are used:

  • se-input
  • se-input-userreplacement
  • se-input-string
  • se-input-continuation
  • se-input-option
  • se-input-delayed
  • se-prompt
  • se-prompt-start
  • se-prompt-user
  • se-prompt-userhostseparator
  • se-prompt-host
  • se-prompt-path
  • se-prompt-end
  • se-root
  • se-unprivileged
  • se-note
  • se-output
  • se-output-snipped
{user@foo ~/path/to}$ foo --user {username}

results in something like the following (expanded for easier reading):

<div class="code">
    <span class="se-prompt">
        <span class="se-prompt-start">{</span>
        <span class="se-prompt-user">user</span>
        <span class="se-prompt-userhostseparator">@</span>
        <span class="se-prompt-host">foo</span> 
        <span class="se-prompt-path">~/path/to</span>
        <span class="se-prompt-end">}</span>
    <span class="se-unprivileged">$ </span>
    <span class="se-input">foo <span class="se-input-option">--user</span> <span class="se-input-userreplacement">{username}</span></span>

Bugs/Feature Requests

Existing bugs and feature requests for ShellExampleMacro are here.

If you have any issues, create a new ticket.


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Download the current source (0.12.2) from here.

There is also a version on PyPi.


You can check out ShellExampleMacro from here using Subversion, or browse the source with Trac.


You can install this software as a normal Trac plugin.

  1. Uninstall ShellExample wiki processor if you have installed before.
  2. Change to the directory containing
  3. If you want to install this plugin globally, that will install this plugin to the Python path:
    python install
  4. If you want to install this plugin to Trac instance only:
    python bdist_egg
    copy the generated egg file to the trac instance's plugin directory
    cp dist/*.egg /srv/trac/env/plugins
  5. Configure your trac.ini file:
    shellexample.* = enabled

Recent Changes

11485 by rjollos on 2012-04-14 00:37:00
Fixes #9900: get_templates_dirs needs to return an empty list, but it was returning None. This should fix a reported instance of the AnnouncerPlugin throwing an error.
11484 by rjollos on 2012-04-14 00:26:50
Removed empty directory.
10269 by nmadura on 2011-06-08 19:48:59
tagged 0.12.2 release


This plugin was originally developed by mOo. Nathaniel Madura significantly updated this plugin, and took over maintenance of it.

Author: nmadura
Maintainer: Nathaniel Madura

Last modified 8 years ago Last modified on Oct 1, 2016, 9:45:39 AM

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