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Documenting environment variables

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Bill Kendrick 2021-05-11 01:08:12 -07:00
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Tux Paint
versión 0.9.26
Environment Variables Documentation
Copyright © 2021-2021 por varios colaboradores; vexa AUTHORS (AUTORES).
http://www.tuxpaint.org/
11 de Maio de 2021
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Tux Paint understands a number of environment variables, either directly,
or indirectly by the libraries that it utilizes.
Storage-related environment variables
HOME
Specifies the user's "home directory", which is used to locate
numerous other files or directories. In some cases, it is utilized
as part of a fall-back location, when other environment variables
(elsewhere in this documentation) are not set. Sometimes, the
location to use can be overridden by options provided on the
command-line or via Tux Paint's configuration file. See the
"OPTIONS" documentation for details.
A few examples of where "$HOME" is used include:
* The location of Tux Paint's configuration file
* The basis of where Tux Paint saves and loads users' drawings
* The location of a user's private collection of data files —
stamps, brushes, etc. — (versus those available system wide)
XDG_CONFIG_HOME
On Linux and other platforms where the X Desktop Group standards
are used, the location of the user's configuration files.
Specifically, where to find "user-dirs.dirs", where the
"XDG_PICTURES_DIR" might be defined. It is used for exporting
drawings and animated GIFs. Generally it's set to something like
"$HOME/Pictures/". If not specified, Tux Paint checks in the
directory "$HOME/.config/". If the configuration cannot be found,
Tux Paint simply exports drawings and GIFs to "$HOME".
XDG_DATA_HOME
On Linux and other platforms where the X Desktop Group standards
are used, the location of the user's data directories.
Specifically, where to find the "Trash" directory. It is used when
deleting images from Tux Paint's "Open" dialog. If not set, the
location "$HOME/.local/share/Trash/" is used, if available. If
not, images are simply deleted, rather than moved anywhere.
TEMP
Specifies the location where temporary files may be created. Only
used by Tux Paint on Microsoft Windows OSes. Uses "userdata" if
not set.
Language-related environment variables
LANG
LANGUAGE
LC_ALL
LC_MESSAGES
Specify the language Tux Paint should utilize in its user
interface. Overridde by the "--lang" and "--locale" command-line
options or their configuration file counterparts. The "LANGUAGE"
environment variable is used, if set. If not, "LC_ALL" is used as
a fallback. Then "LC_MESSAGES", and finally "LANG".
Display-related environment variables
The following are a few of the environment variables supported by Simple
DirectMedia Layer (libSD) — which Tux Paint utilizes for displaying
graphics, playing sounds, and receiving mouse, keyboard, and joystick
input — and which may be useful to users of Tux Paint.
SDL_VIDEO_ALLOW_SCREENSAVER
Specifies whether Tux Paint should allow a screensaver to run. Can
be set to '1' (true) by Tux Paint itself by issuing the
command-line option "--allowscreensaver" or its configuration file
counterpart.
SDL_VIDEO_WINDOW_POS
Requests where to position Tux Paint's window. Normally set to
"center" by Tux Paint itself, unless the environment variable is
already set (e.g., to "nopref", meaning "no preference").