Ubuntu – How to use gsettings when there is no schema listed

compizdconfgsettingsscripts

I'm wanting to write a script to reorder the loading of compiz modules, so while using the Unity desktop, expo and scale are loaded last and the set hotcorners in those plugins, will remain active upon reboot. This can easily be done using the gui dconf-editor. However any time an update comes through for unity, this setting is put back to the default of loading the Unity module last, and killing the hotcorners.

So needing a cli method to change the setting in dconf-editor located at org/compiz/profiles/unity/plugins/core from

['core', 'composite', 'opengl', 'copytex', 'decor', 'regex', 'compiztoolbox', 'place', 'imgpng', 'grid', 'unitymtgrabhandles', 'resize', 'mousepoll', 'snap', 'gnomecompat', 'move', 'vpswitch', 'session', 'wall', 'animation', 'workarounds', 'expo', 'scale', 'fade', 'ezoom', 'unityshell']

so issuing the command

gsettings list-schemas | grep -i compiz

shows that there's no schema for what I need to change so trying instead

gsettings list-recursively | grep -i compiz

gives a much longer list, but not much useful to my project. Where have I gone wrong or is there another solution to my problem?

Best Answer

I expect it to be this, adding "quotes" to the value as part of the proper GVariant formatting required for setting strings.

gsettings set org.compiz.core:/org/compiz/profiles/unity/plugins/core/ active-plugins \
 "['core', 'composite', 'opengl', 'copytex', 'decor', 'regex', 'compiztoolbox', 'place' 
,'imgpng', 'grid', 'unitymtgrabhandles', 'resize', 'mousepoll', 'snap', 'gnomecompat',
'move', 'vpswitch', 'session', 'wall', 'animation', 'workarounds', 'fade', 'ezoom', 
'unityshell', 'expo', 'scale']"

Related Solutions

Ubuntu – get a list of SCHEMA / PATH / KEY to use with gsettings

gsettings list-schemas gets you all the schema. You can also use gsettings list-recursively for what you want but this program will list all the values for all the keys for all schemas:
(Lest's call the script gsettings-iterate-all)

#!/bin/bash
# Gnome 3 can be customised from the command line via the gsettings command
# This script should help you to find what you're looking for by
# listing the ranges for all keys for each schema

for schema in $(gsettings list-schemas | sort)
do
    for key in $(gsettings list-keys $schema | sort)
    do
        value="$(gsettings range $schema $key | tr "\n" " ")"
        echo "$schema :: $key :: $value"
    done
done

Expanding on your example gsettings-iterate-all | grep com.canonical.Unity2d.Launcher yields

com.canonical.Unity2d.Launcher :: edge-decayrate :: type i 
com.canonical.Unity2d.Launcher :: edge-overcome-pressure :: type i 
com.canonical.Unity2d.Launcher :: edge-responsiveness :: type d 
com.canonical.Unity2d.Launcher :: edge-reveal-pressure :: type i 
com.canonical.Unity2d.Launcher :: edge-stop-velocity :: type i 
com.canonical.Unity2d.Launcher :: hide-mode :: type i 
com.canonical.Unity2d.Launcher :: only-one-launcher :: type b 
com.canonical.Unity2d.Launcher :: reveal-mode :: type i 
com.canonical.Unity2d.Launcher :: super-key-enable :: type b

You can reroute the output to a file for easy reading.

And for creative folks out there. Here is a list of possible options to gsettings that might help create other scripts.

Ubuntu – How to install a Gsettings Schema without root privileges

You can copy and compile your Gsettings Schemas to a user-writable directory:

$ cp com.companyname.appname ~/schemas/
$ glib-compile-schemas ~/schemas/

The tricky bit is to configure the application to use that particular directory. There are two ways to do this:

With the GSETTINGS_SCHEMA_DIR environment variable:
```
$ GSETTINGS_SCHEMA_DIR=~/schemas/ ./example.py
```

Or using GSettingsSchemaSource and GSettingSchema objects:

If you have access to the source code of your program, you can modify it to load compiled schemas from any directory. Here's how would do it in Python, although you could do this in any programming language with GObject introspection:

schema_source = Gio.SettingsSchemaSource.new_from_directory(
    os.path.expanduser("~/schemas"),
    Gio.SettingsSchemaSource.get_default(),
    False,
)
schema = schema_source.lookup('com.companyname.appname', False)
settings = Gio.Settings.new_full(schema, None, None)
settings.set_boolean('mybool', True)

Best Answer

Related Solutions

Ubuntu – get a list of SCHEMA / PATH / KEY to use with gsettings

Ubuntu – How to install a Gsettings Schema without root privileges

References:

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