I am trying to generate a screenshot of a firefox window in my terminal, but I keep getting an error:
root#host [~]# DISPLAY=:1 firefox http://www.cnn.com & sleep 5 && DISPLAY=:1 import -window root -crop 1264x948+0+25 -quality 90 /usr/local/apache/htdocs/screenshot1.jpg && pkill firefox
[1] 30200
import: unable to open X server `:1' # import.c/ImportImageCommand/364.
Why is this happening? How can I fix it?
Maybe try DISPLAY=:0, for example?
It looks like you used changed to root in the terminal after starting it (or did you login to X as root?). If that's the case the display can't be opened because it's owned by another user and you can't just go and display stuff somebody else's display.
Exit the root session and it will probably work. If you want it to work from the root session take a look at 'man xhost'.
Can you tell us what are the result when you type
ls -la /tmp/ | grep X
and
ps | grep X
Also, I had some trouble with using the DISPLAY=:1 syntax, so instead I use:
firefox --display=:1 URL_OF_SITE
import -display :1 -window root etc...
Related
I'm using TigerVNC, trying to point to specific xstartup because I will need several unique startups for a given user. This is what I'm trying:
vncserver :5 -name "MyServer" -geometry 600x320 -depth 24 -AlwaysShared -fp /usr/share/X11/fonts/misc,/usr/share/X11/fonts/Type1,/usr/share/X11/fonts/100dpi -IdleTimeout 0 -SecurityTypes VncAuth -rfbauth /home/frogger123/.vnc/passwd -xstartup /home/frogger123/.vnc/mystartup
I am consistently getting
Unrecognized option: -xstartup
The docs on the TigerVNC page list this as a valid option. What am I doing wrong? Thanks
edit:From the manual :
vncserver [:display#] [−name desktop-name] [−geometry widthxheight] [−depth depth] [−pixelformat format] [−fp font-path] [−fg] [−autokill] [−noxstartup] [−xstartup script] [Xvnc-options...]
−xstartup script
Run a custom startup script, instead of %HOME/.vnc/xstartup, after launching Xvnc. This is useful to run full-screen applications.
I was using the wrong version of TigerVNC
I downloaded and installed the latest Ma version of Maxima from source forge. When I try to launch it, I get
“Maxima.app” is damaged and can’t be opened. You should move it to the Trash.
This happens with both available versions, the one with VTK and the one without VTK.
How can I get it running?
I have MacOS 10.12.6
and both versions are here:
https://sourceforge.net/projects/maxima/files/Maxima-MacOS/5.40.0-MacOSX/
Others have run into the same problem. I don't use MacOS so I'm not sure what the problem is. Anyway, take a look at this bug report: #3316: Maxima VTK for Mac 5.40 is corrupt. The person who submitted it reported they got it working by following the advice in the comments.
See also thread 39: https://sourceforge.net/p/maxima/support-requests/39/
This is a really important thread to the larger MacOS community.
I have a MacBook Pro running OS X El Capitan, which is locked down a few versions back from the current MacOS Mojave.
I spent an entire night trying to get every wxMaxima from 5.36 to 5.42 running without success - even compiling from sources.
In desperation I found the thread 39 and entered the line:
(setf sb-impl::default-external-format :utf-8)
into a ~home/.sbclrc file (/Users/myName/.sbclrc). It was only then that the GUI and the Maxima engine could connect and a normal session could be established. Maxima, its maintainers and its users are too important a world resource to be stymied by such an esoteric and non-obvious bug.
A user encountering this bug will first go into the preferences menu and start trying to make sure that the file addresses and port numbers are correct, but experimentation can corrupt these and lead to other problems.
In my case following excerpt from https://sourceforge.net/p/maxima/mailman/message/35910588/ helped:
(0) Double-click the icon of "Terminal.app" in the folder "/Applications/Utilities", then the command-line-user-interface window is opened.
(1) Move the current working directory to the location of the disc image with the command "cd". (e.g. "Downloads" folder)
$ cd $HOME/Downloads
(2) You can check the attribute with the command "ls -l#":
(You will be able to find "com.apple.quarantine" which is the name of the attribute.)
$ ls -l# ./*.dmg
-rw-r--r--# 1 name staff 471227521 6 24 23:17 ./Maxima-5.40.0-VTK-macOS.dmg
com.apple.quarantine 62
(3) Remove the attribute "com.apple.quarantine" with the command "xattr -d com.apple.quarantine ./*.dmg":
$ xattr -d com.apple.quarantine ./Maxima-5.40.0-VTK-macOS.dmg
(4) Verify that the attribute "com.apple.quarantine" was removed:
$ ls -l# ./*.dmg
-rw-r--r-- 1 name staff 471227521 6 24 23:17 ./Maxima-5.40.0-VTK-macOS.dmg
(5) Double-click the icon of the disc image file to open.
After that, you should install Maxima.app into your "Applications" folder ("/Applications"). And you should drag the Launchers icon from the disc image to another place of your filesystem. You can install launchers to anywhere you like.
Then you will be able to launch Maxima with Maxima.app or launchers.
I'm initializing spot instances running a derivative of the standard Ubuntu 13.04 AMI by pasting a shell script into the user-data field.
This works. The script runs. But it's difficult to debug because I can't figure out where the output of the script is being logged, if anywhere.
I've looked in /var/log/cloud-init.log, which seems to contain a bunch of stuff that would be relevant to debugging cloud-init, itself, but nothing about my script. I grepped in /var/log and found nothing.
Is there something special I have to do to turn logging on?
The default location for cloud init user data is already /var/log/cloud-init-output.log, in AWS, DigitalOcean and most other cloud providers. You don't need to set up any additional logging to see the output.
You could create a cloud-config file (with "#cloud-config" at the top) for your userdata, use runcmd to call the script, and then enable output logging like this:
output: {all: '| tee -a /var/log/cloud-init-output.log'}
so I tried to replicate your problem. Usually I work in Cloud Config and therefore I just created a simple test user-data script like this:
#!/bin/sh
echo "Hello World. The time is now $(date -R)!" | tee /root/output.txt
echo "I am out of the output file...somewhere?"
yum search git # just for fun
ls
exit 0
Notice that, with CloudInit shell scripts, the user-data "will be executed at rc.local-like level during first boot. rc.local-like means 'very late in the boot sequence'"
After logging in into my instance (a Scientific Linux machine) I first went to /var/log/boot.log and there I found:
Hello World. The time is now Wed, 11 Sep 2013 10:21:37 +0200! I am
out of the file. Log file somewhere? Loaded plugins: changelog,
kernel-module, priorities, protectbase, security,
: tsflags, versionlock 126 packages excluded due to repository priority protections 9 packages excluded due to repository
protections ^Mepel/pkgtags
| 581 kB 00:00
=============================== N/S Matched: git =============================== ^[[1mGit^[[0;10mPython.noarch : Python ^[[1mGit^[[0;10m Library c^[[1mgit^[[0;10m.x86_64 : A fast web
interface for ^[[1mgit^[[0;10m
...
... (more yum search output)
...
bin etc lib lost+found mnt proc sbin srv tmp var
boot dev home lib64 media opt root selinux sys usr
(other unrelated stuff)
So, as you can see, my script ran and was rightly logged.
Also, as expected, I had my forced log 'output.txt' in /root/output.txt with the content:
Hello World. The time is now Wed, 11 Sep 2013 10:21:37 +0200!
So...I am not really sure what is happening in you script.
Make sure you're exiting the script with
exit 0 #or some other code
If it still doesn't work, you should provide more info, like your script, your boot.log, your /etc/rc.local, and your cloudinit.log.
btw: what is your cloudinit version?
I have a perl script on CentOS and am trying to read a file using File::Slurp:
my $local_filelist = '~/filelist.log';
use File::Slurp;
my #files = read_file($local_filelist);
But I get the following error:
Carp::croak('read_file \'~/filelist.log\' - sysopen: No such file or directory') called at /usr/local/share/perl5/File/Slurp.pm line 802
This is despite the fact that I am running the script as myuser and:
(2013-07-26 06:55:16 [myuser#mybox ~]$ ls -l ~/filelist.log
-rw-r--r--. 1 myuser myuser 63629044 Jul 24 22:18 /home/myuser/filelist.log
This is on perl 5.10.1 x86_64 on CentOS 6.4.
What could be causing this?
I've not used File::Slurp, but I'll hazard a guess that it doesn't understand the ~ for home directory. Does it work if you specify the full path - e.g., use:
my $local_filelist = "$ENV{HOME}/filelist.log";
Using double quotes will mean that perl will expand $ENV{HOME}.
Just use the glob function. That's what it is for.
my $local_filelist = glob '~/filelist.log';
I think that when you are running a script ~ may not be set or is set to somewhere else - try replacing:
'~/filelist.log'
with:
'/home/myuser/filelist.log'
in your script.
I have a netbeans project with a directory tree like this:
<source folder>
|
|---> gui <web root folder>
| |
| L---> datos.php
|
L---> index.php
datos.php changes the working directory to .. (source folder) and includes index.php like this:
chdir('..');
require 'index.php';
If I put a breakpoint inside datos.php, the debugger breaks on it correctly, but when putting one in index.php it ignores it.
The strange thing is 6 months ago I had the same problem and I was able to fix it. Now I don't know why it stopped working and what I did back then to fix it.
More info:
xdebug log shows the following command for breakpoint setting:
breakpoint_set -i 315 -t line -s enabled -f file:///Users/tomasgirardi/NetBeansProjects/datamed/index.php -n 51
breakpoint_set -i 316 -t line -s enabled -f file:///Users/tomasgirardi/NetBeansProjects/datamed/gui/datos.php -n 39
In both cases xdebug responds with state="enabled"
And if I debug manually, I can use the following command to set the breakpoint, which works:
breakpoint_set -i 315 -t line -s enabled -f file:///../index.php -n 51
But I don't know how could I make netbeans issue the breakpoint_set command with the same file:///../index.php argument and not file:///Users/tomasgirardi/NetBeansProjects/datamed/index.php or any other way I can make this work.
Thanks in advance for any help!
You always can try using xdebug_break();
For example :
<?php
for ( $i=1, $j=0; $i<10; $i++) {
xdebug_break();
echo "<br>Line $i"; // will stop here
}
?>
will add a breakpoint in the following line.
Hope that helps a little...
Breakpoints are working again. I don't have any clues to why they didn't worked before but now they do. I can't remember doing any changes in xdebug or Netbeans either.
xdebug.log shows me the same as before, but now it stops at the setted breakpoint:
<- breakpoint_set -i 4 -t line -s enabled -f file:///Users/tomasgirardi/NetBeansProjects/datamed/index.php -n 51
-> <response xmlns="urn:debugger_protocol_v1" xmlns:xdebug="http://xdebug.org/dbgp/xdebug" command="breakpoint_set" transaction_id="4" state="enabled" id="14290001"></response>
<- run -i 5
-> <response xmlns="urn:debugger_protocol_v1" xmlns:xdebug="http://xdebug.org/dbgp/xdebug" command="run" transaction_id="5" status="break" reason="ok"><xdebug:message filename="file:///Users/tomasgirardi/NetBeansProjects/datamed/index.php" lineno="51"></xdebug:message></response>
However, if anyone knows why this could had happend, sharing it could be helpful either way: probably me or someone else will be able to avoid having similar troubles in the future.
This issue is more specific to people who are using remote servers for their web apps.
I had the same problem. Xdebug ignores breakpoints really helped me however i have given solution more specific to netbeans, but the essence is the same, which ever IDE you are using. Just map your local project path with your remote server path.
My environment is WINDOWS 7 and website is hosted on UBUNTU VM. I am using NETBEANS from Windows 7 and has setup a remote project.
My xdebug logs
<- breakpoint_set -i 4 -t line -s enabled -f file:///C:/Users/ali/Documents/NetBeansProjects/test.com.au/cgen/src/Acme/TestBundle/Controller/CreateController.php -n 39
->
The real problem was the project path in netbeans [C:/Users/ali/Documents/NetBeansProjects/test.com.au] and the project path on the webserver. /home/ali/sites/test.com.au
Fix: In Netbeans click on your project > properties > Run Configuration > Advanced > Just put the appropriate server path and equivalent project path. It will work fine.
Same problem was solved by commenting xdebug.extended_info = 0. Also one may switch it to 1.
To get it to work again i changedxdebug.remote_host=127.0.0.1 to xdebug.remote_host=localhost in php.ini
below is my config for xdebuga
xdebug.remote_enable=1
xdebug.remote_port=9001
xdebug.remote_handler=dbgp
xdebug.remote_host=localhost
xdebug.remote_autostart = 1
xdebug.show_local_vars = 1
xdebug.profiler_enable = 1
output_buffering=off
xdebug.idekey=netbeans-xdebug