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in Cygwin, start X server fullscreen ...
For openGL, check here:
ssh compresion -C option ...
on slow connection VNC performs better but in local LAN native secure X protocol is an option
This forces X back to its maximum resolution configured. To get a list, type `xrandr'.
change keyboard layout in X
when using Gnome or KDE, you will have a hard time getting a screenshot of something like a login screen, or any other screen that occurs before the desktop environment is up and monitoring the printscreen key. (this probably applies for other DEs as well, but I haven't used them)
What this command is meant to do is take a screenshot of an X window using a command you can run from your virtual terminals (actual text terminals, not just an emulator) To do this:
Press CTRL+ALT+F1 to go to a virtual (text) terminal once your login window comes up
Login to the virtual terminal and enter the command (you'll have to type it in)
You should now have a file called screenshot.png in your home directory with your screenshot in it.
For those of you who are new to the virtual terminal thing, you can use CTRL+ALT+F7 to get back to your regular GUI
There are different ways to run X, I prefer to run it without xdm/gdm. The problem is you can't lock X because one can press Ctrl+Alt+F1, press Ctrl+Z and kill you X locking process. Of course you can disable Ctrl+Alt* or Ctrl+Alt+Backspace keys, but it's inconvinient if you really need to switch into console.
This will save your open windows to a file (~/.windows).
To start those applications:
cat ~/.windows | while read line; do $line &; done
Should work on any EWMH/NetWM compatible X Window Manager.
If you use DWM or another Window Manager not using EWMH or NetWM try this:
xwininfo -root -children | grep '^ ' | grep -v children | grep -v '<unknown>' | sed -n 's/^ *\(0x[0-9a-f]*\) .*/\1/p' | uniq | while read line; do xprop -id $line _NET_WM_PID | sed -n 's/.* = \([0-9]*\)$/\1/p'; done | uniq -u | grep -v '^$' | while read line; do ps -o cmd= $line; done > ~/.windows
Set up X forwarding in PuTTY, with X display location set to :0.0
Launch PuTTY ssh session.
Launch Xming. Make sure that display is set to :0.0 (this is default).
echo "I'm going to paste this into WINDERS XP" | xsel -i
will insert the string into the windows cut and paste buffer.
Thanks to Dennis Williamson at stackoverflow.com for sharing...
When you run an X program from a terminal you can see any errors. But when it's run from another X program (eg from a menu item, from your fluxbox 'keys' file etc) it might just die and you see nothing (except perhaps in .xsession-errors). Instead, launch it via this command and you'll see the termination status, stderr and stdout.
eg: "xlaunch firefox" or "xlaunch 'echo stdout; echo stderr >&2; false'":
'echo stdout; echo stderr >&2; false' failed with error 1
That works in all softs, CLI or GUI... I don't want to waste time to all the time typing the same stuff . So, I have that command in my window manager shortcuts ( meta+l ). All the window managers have editable shortcuts AFAIK. If not, or you don't want to use it that way, you can easily use the xbindkeys soft.
I you're using kde4, you can run :
then open "inputs actions" and create a new shortcut.
For Gnome take a look there : http://www.cyberciti.biz/faq/howto-create-keyboard-shortcuts-in-gnome/
A more advanced one, with strings and newlines :
xvkbd -xsendevent -text "---8<-----\nToday date is: $(date +%Y%m%d)\n---8<-----"
For complicated or long paste, you can feed xvkbd with a file :
xvkbd -xsendevent -file <file>
You can simulate ^C ( control+c ) too or others combinations of keys :
xvkbd -text "\C\Ac"
There's no man page nor help ( On my Archlinux distro ), but you can see online doc there : http://homepage3.nifty.com/tsato/xvkbd/
This starts a very basic X session, with just a simple xterm. You can use this xterm to launch your preferred distant session.
ssh -X john@otherbox gnome-session
Try also startkde or fluxbox or xfce4-session.
To switch between your two X servers, use CTRL+ALT+F7 and CTRL+ALT+F8.
This is a (last resort) way to automate applications that provide no other ways for automation, it would send 'Hello world' to the currently active window. See the manpage (and the -text and -window entries) for how to send special characters and target specific windows.
Using xwininfo, I get the id of my XPlanet background window:
xwininfo: Please select the window about which you
would like information by clicking the
mouse in that window.
xwininfo: Window id: 0x3600001 "Xplanet 1.2.0"
Absolute upper-left X: 0
Now I use xvkbd to tell it to close itself:
xvkbd -xsendevent -window 0x3600001 -text "Q"
Obviously, the best way is to put these commands in a shellscript - just make sure to include a short sleep (sleep .1 should suffice) after each xvkbd call, or some programs will become confused.
Requires: imagemagick and graphviz
On Debian systems, displays a graph of package dependencies. Works also with other image formats, like svg :
apt-cache dotty bash | dot -T svg | display
Have you ever had to scp a file to your work machine in order to copy its contents to a mail? xclip can help you with that. It copies its stdin to the X11 buffer, so all you have to do is middle-click to paste the content of that looong file :)