This is the command bsetbg that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
bsetbg - utility to manipulate the appearance of the X11 desktop's root window.
SYNOPSIS
bsetbg [options] image
DESCRIPTION
bsetbg is intended to provide a standard method for the Blackbox window manager to alter
the background of the root window (although it will work with any other window manager as
well). bsetbg acts as a wrapper both to bsetroot and to a flexible variety of third-party
applications that it uses when handling images files.
OPTIONS
-f, -full image
image is stretched to fill the entire desktop.
-t, -tile image
image is tiled on the desktop.
-c, -center image
image is centered on the desktop.
-e, -exec program options fallback-arg image
This option tells bsetbg to run a separate command by executing program with
options, where options are arguments to program.
If a fallback-arg is supplied (-full, -tile, or -center as described above), bsetbg
will assume that the last argument is a filename. In the case that program exits
non-zero or isn't available on the target system, bsetbg will try to handle the
file with the fallback argument.
See the EXAMPLES section for more information on -exec.
-p, -post list
Specifies a list of arguments to pass to the $POST_COMMAND.
-d, -debug
Debugging mode. bsetbg will print commands without executing them.
-g, -generate list
Output a list of default configuration values, suitable for redirecting into
~/.bsetbgrc. Any arguments that are supplied will be considered applications to
search for in the system path, overriding bsetbg's internal defaults.
-app imageApp
Use this flag to specify which image application to use. This application may be
one of the pre-defined list or any application capable of displaying an image on
the root window. This flag may be used in conjunction with passing application
specific parameters to the application, in which case they should be enclosed in
double quotes.
-v, -version
Output version number.
-h, -help
Output a brief usage message.
OTHER OPTIONS
bsetbg will also accept all of the arguments for bsetroot. Consult the bsetroot(1) man
page for further information.
CONFIGURATION
bsetbg will read its configuration values from the file ~/.bsetbgrc if it exists.
Otherwise, it will scan the system path for a pre-defined list of image applications to
use (currently this list consists of qiv, xli, xv, wmsetbg, Esetroot, display, and
xsetbg). ~/.bsetbgrc should contain the following variables:
CENTER="string"
Application and arguments to be used to center an image on the root window when the
-center argument is specified.
FULL="string"
Application and arguments to be used to stretch an image to fill the root window
when the -full argument is specified.
TILE="string"
Application and arguments to be used to tile an image on the root window when the
-tile argument is specified.
DEFAULT="string"
Action to take place by default if none of the above have been specified.
The following variables are optional:
NO_EXEC="boolean"
If this variable is set, bsetbg will never modify the root window.
POST_COMMAND="string"
This variable specifies a command that bsetbg will run after every successful
modification of the root window.
LOG_LAST_CMD="boolean"
If this variable is set, bsetbg will keep a logfile of the last two successful
commands.
LOGFILE="string"
This variable can specify the logfile to be used when $LOG_LAST_CMD is defined.
The default is ~/.bsetbg_last_cmd .
As mentioned above, bsetbg will function perfectly for the majority of users without
having a configuration file. Power users who want more control over bsetbg's behavior
should run bsetbg -g and use the output to create a ~/.bsetbgrc which may then be tweaked
by hand.
EXAMPLES
In this example, bsetbg will set the image in centered mode:
bsetbg -center foo.png
An example of the -exec argument:
bsetbg -exec xv -root -quit -rmode 5 -rbg rgb:2/2/2 \ -center foo.png
An example in which bsetbg creates a configuration file using xv and qiv:
bsetbg -g xv qiv > ~/.bsetbgrc
An example of the use of the -app argument:
bsetbg -app qiv "-o rgb:d6/c5/a2 -x" -c foo.png
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