display
displays an image or image sequence on any X server.
Synopsis
display
[options] input-file
add an example, a script, a trick and tips
examples
source
Triple (3) Monitors under Linux
I have 2 displays. Configuration was just easy with the
nvidiasettings tool, and there seems to be no
trouble with adding a new head to the existing configuration.
Everything you mention works fine :)
source
Continuously monitor files opened/accessed by a process
Try with strace -p 12345; it should do what you are
trying to achieve.
source
Is there a quick/automatic way to change monitor brightness at night on Windows 7 or Linux?
Useful Answer: Well, for something clickable on screen, there's
the Display Brightness Gadget. Also on the page is
a command line utility for getting/setting the screen brightness.
You can use that with the Task Scheduler or your favorite hotkey
tool of choice for timed or hotkeyed modification of your
brightness.
Snarky Answer: It's not your monitor's brightness keeping you up,
it's the upright position, focusing on a screen, and brain
engagement (maybe :-P ) from interacting with your PC keeping up
awake.
Snarky Answer #2: Your monitor has a power button -- use it.
source
Linux "Top" command for Windows Powershell?
There's nothing that I know of that in single cmdlet form, but
like you say, scripts are easy to right to emulate top.
while (1) { ps | sort -desc cpu | select -first 30; sleep -seconds 2; cls }
source
How to disable the screen (Linux without X)
If you have a serial port on your machine you could run it
headless.
Do a web search for "linux serial console howto".
source
Faking monitor EDID information
You might try
Option "IgnoreEDID" "TRUE"
and then specify your monitor's information manually. If
IgnoreEDID doesn't work for you, try
Option "UseEDIDFreqs" "FALSE"
Option "UseEDIDDpi" "FALSE"
source
Netbook screen too small, Software fix?
Virtual Screen
Use a virtual screen larger than the physical screen
size.
Often this can be done by:
- Adding something like "Virtual 1024x800" to
/etc/X11/xorg.conf then
- Restarting X11 (using Ctrl+Alt+Backspace on those
distributions/configurations that support this).
What if I have Ubuntu?
On Ubuntu Ctrl+Alt+Backspace does not restart X11. If using
Ubuntu, your options are one of:
-
sudo /etc/init.d/gdm restart
-
System -> Preferences -> Keyboard -> Layout
-> Key to kill X -> [/] Ctrl+Alt+BS
- Reboot if you can't figure out a better way to restart X11.
Moving windows that are larger than screen
As
JamesGecko's Answer suggests ...
The KDE window manager, Kwin "lets you easily move windows by
pressing the ALT button. You can then just click on a window's
content. While you hold the left mouse button pressed, windows
will move". - KDE.org
You can therfore grab a window somewhere in it's lowest visible
region and drag it up to reveal any [OK], [Cancel] or other
buttons at the bottom that were formerly offscreen and
inaccessible.
source
How can I use my laptop's monitor as my PC's ONLY monitor?
There are a number of open source software projects that create
software that allows you to control multiple computers using just
the keyboard and mouse of one of the computers. The best known is
probably Synergy:
http://synergy2.sourceforge.net/
There are some others that people advocate, as well as some forks
of Synergy that people prefer to Synergy itself.
Just remoting into the PC using VNC might be enough for your
needs, too.
[Edit: SORRY, after thinking a moment I realize Synergy is not at
all what you want. Synergy would allow you to control the PC from
your laptop's keyboard (which is great) but it would generally be
used in dual-monitor situation where your pc also had its own
monitor. VNC is solution you want if you want to see the PC"s
display on your laptop display. ]
source
X on one monitor, a bare, tty terminal on another? (linux)
The problem you have with running the setup you mention is the
keyboard. The keyboard will be captured by the x server running
on your primary display (high-res). You will not be able to
switch to the other terminal if you would like to type something
in it.
Even if your secondary monitor is low resolution, you could run
an xterm session on it that's separate from your main x screen.
You will want to setup the 2 displays as completely different
screens (not using xinerama). You will end up with
0.0 and 0.1 displays. Your primary
display would be the 0.0 whereas your DISPLAY
environment variable will be as follows:
export DISPLAY=:0.0
This configuration will allow you to move your mouse between the
2 screens to choose where your keyboard input will be passed. In
your .xinitrc (in your home dir), you could then do
something as follows:
#!/bin/bash
xsetroot -solid black
xsetroot -display :0.1 -solid darkblue
xterm -display :0.1 -fn 9x16 -geometry 86x36+1+1 &
startkde
This would start by setting the background of your primary
display to black. Next it will set your secondary display
background to darkblue (I use this color because I use my
secondary screen for watching movies). Next line starts an xterm
on your second display with a preset geometry. You will want to
adjust the geometry to fit your screen the best for you. You
cannot specify pixel width and height because the geometry for
xterm measures in characters. If you choose the 9x16 font size as
in my example and your secondary screen resolution is 800x600,
you would do the following math:
font size = 9x16
screen size = 800x600
xterm width = ( 800 / 9 ) = 88.888
xterm height = ( 600 / 16 ) = 37.5
You want to round the number down some, especially for the width
since you need to account for a scrollbar. You will not have a
window manager on the secondary screen so there will be no xterm
window title (unless you choose to run something light on the
second monitor such as twm or fvwm).
Basically, you will have to play with the numbers til you get it
how you want it.
The last line in the .xinitrc file will launch the
main window manager on your primary display. You can change this
to gnome-session or whatever launches your favorite wm. You could
also modify the existing .xinitrc for your
distribution if you wish to preserve the ability to choose your
window manager during login. There should be a skeleton file in
your /etc/X11 for using as a base.
source
How to correct a screen wrapping around?
I had the same issue with CentOS 6.3 with a 19" Samsung monitor.
I solved this by changing the resolution in
/System/Preferences/Display/ to 1280×720.
source
Fedora: Adding a third monitor to the mix
I had just such an arrangement a couple of years ago. The "cheap"
card was also an NVIDIA one (sorry can't remember the exact
model). But it all worked fine and the NVIDIA software was able
to control everything, including things like having some of the
monitors rotated 90 degrees.
source
Adjust screen brightness automatically at night
One app to try
f.lux™ Better lighting...for your computer
it makes the color of your computer's display adapt to the time
of day, warm at night and like sunlight during the day.
Available for XP/Vista/7, OSX and linux
source
How do you find out a laptop screen panel manufacturer / model with Linux? (Samsung, LG, Chi Mei, etc)
Use any utility that shows the EDID information. One place to
look for this information is in /var/log/Xorg.0.log
description
Image Settings:
-antialias remove pixel-aliasing
-authenticate value decrypt image with this password
-backdrop display image centered on a backdrop
-channel type apply option to select image channels
-colormap type Shared or Private
-colorspace type alternate image colorspace
-comment string annotate image with comment
-compress type type of pixel compression when writing
the image
-decipher filename convert cipher pixels to plain
pixels
-define format:option
define one or more image format options
-delay value display the next image after pausing
-density geometry horizontal and vertical density of
the image
-depth value image depth
-display server display image to this X server
-dispose method layer disposal method
-dither method apply error diffusion to image
-endian type endianness (MSB or LSB) of the image
-equalize perform histogram equalization to an image
-filter type use this filter when resizing an image
-format "string" output formatted image
characteristics
-fuzz distance colors within this distance are
considered equal
-geometry geometry preferred size and location of the
Image window
-gravity type horizontal and vertical backdrop
placement
-identify identify the format and characteristics of
the image
-immutable displayed image cannot be modified
-interlace type type of image interlacing scheme
-interpolate method pixel color interpolation method
-label string assign a label to an image
-limit type value pixel cache resource limit
-loop iterations loop images then exit
-map type display image using this Standard Colormap
-matte store matte channel if the image has one
-monitor monitor progress
-page geometry size and location of an image canvas
-profile filename add, delete, or apply an image
profile
-quality value JPEG/MIFF/PNG compression level
-quantize colorspace reduce colors in this colorspace
-quiet suppress all warning messages
-regard-warnings pay attention to warning messages
-remote command execute a command in an remote display
process
-repage geometry size and location of an image canvas
(operator)
-sampling-factor geometry
horizontal and vertical sampling factor
-scenes range image scene range
-seed value seed a new sequence of pseudo-random
numbers
-set property value set an image property
-size geometry width and height of image
-support factor resize support: > 1.0 is blurry,
< 1.0 is sharp
-texture filename name of texture to tile onto the
image background
-transparent-color color
transparent color
-treedepth value color tree depth
-update seconds detect when image file is modified and
redisplay
-verbose print detailed information about the image
-visual type display image using this visual type
-virtual-pixel method
virtual pixel access method
-window id display image to background of this window
-window-group id exit program when this window id is
destroyed
-write filename write image to a file
Image
Operators:
-auto-orient automatically orient image
-border geometry surround image with a border of color
-clip clip along the first path from the 8BIM profile
-clip-path id clip along a named path from the 8BIM
profile
-colors value preferred number of colors in the image
-contrast enhance or reduce the image contrast
-crop geometry preferred size and location of the
cropped image
-despeckle reduce the speckles within an image
-edge factor apply a filter to detect edges in the
image
-enhance apply a digital filter to enhance a noisy
image
-extract geometry extract area from image
-flip flip image in the vertical direction
-flop flop image in the horizontal direction
-frame geometry surround image with an ornamental
border
-gamma value level of gamma correction
-monochrome transform image to black and white
-negate replace each pixel with its complementary
color
-raise value lighten/darken image edges to create a
3-D effect
-resample geometry change the resolution of an image
-resize geometry resize the image
-roll geometry roll an image vertically or
horizontally
-rotate degrees apply Paeth rotation to the image
-sample geometry scale image with pixel sampling
-segment value segment an image
-sharpen geometry sharpen the image
-strip strip image of all profiles and comments
-trim trim image edges
Image Sequence
Operators:
-coalesce merge a sequence of images
-flatten flatten a sequence of images
Miscellaneous
Options:
-debug events display copious debugging information
-help print program options
-log format format of debugging information
-list type print a list of supported option arguments
-version print version information
In addition to
those listed above, you can specify these standard X
resources as command line options: -background,
-bordercolor, -borderwidth, -font,
-foreground, -iconGeometry, -iconic,
-mattecolor, -name, -shared-memory,
-usePixmap, or -title.
By default, the
image format of ’file’ is determined by its
magic number. To specify a particular image format, precede
the filename with an image format name and a colon (i.e.
ps:image) or specify the image type as the filename suffix
(i.e. image.ps). Specify ’file’ as
’-’ for standard input or output.
Buttons:
1 press to map or unmap the Command widget
2 press and drag to magnify a region of an image
3 press to load an image from a visual image directory
copyright
Copyright (C) 1999-2012 ImageMagick Studio LLC. Additional
copyrights and licenses apply to this software, see
file:///usr/share/doc/imagemagick/www/license.html or
http://www.imagemagick.org/script/license.php
note
The display program defaults to the X screen resolution. To
display vector formats at their intended size, override the
default resolution:
display -density 72 drawing.svg
overview
The display program is a member of the ImageMagick(1)
suite of tools. Use it to display an image or image sequence on
any X server.
For more information about the display command, point your
browser to file:///usr/share/doc/imagemagick/www/display.html or
http://www.imagemagick.org/script/display.php.
see also
ImageMagick