When I run the casper script via ubuntu terminal it captures the website(generates img as it is supposed to) but when i feed that command to php's shell exec it fails to generate the img. Any genereal problem ?
I had this issue not ten minutes ago!! For me the issue was permissions. I solved it with the following command:
sudo chown -R www-data:www-data ./
however I DON'T recommend you run that willy nilly, I've seriously screwed up my server in the past playing about with permissions!
Related
I have a shell script (called test.sh) which is called from PHP. Within the script I simply have:
#!/bin/bash
echo $(whoami)
cordova platform version ios
If I call test.sh from within terminal it works fine and returns the cordova ios version.
If I try to call test.sh from with PHP I get:
cordova: not found
I have altered apache to run under my username instead of _www but that hasnt worked.
Can anyone point me in the right direction as I'm guessing it is a permissions issue?
I have now simplified it further by removing the .sh file and just using the PHP script (under user _www)
exec('echo $(whoami) 2>&1', $output, $return_var);
print_r($output);
echo "<br><br>";
putenv("CORDOVA_HOME=/usr/local/bin/cordova");
exec('cordova -v 2>&1', $output, $return_var);
print_r($output);
Note: whoami works fine but corvoda is still not found.
Use npm to install Cordova globally. right now Cordova is not available in your host globally. So make it globally first.
on OS X and Linux:
sudo npm install -g cordova
on Windows:
C:\>npm install -g cordova
To solve the problem I looked at the path returned from terminal and PHP, they were both using the same username but returned different path details.
After adding to PHP:
putenv("PATH=".getenv('PATH').":/Users/USERNAME/.sdkman/candidates/gradle/current/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands");
putenv("CORDOVA_HOME=/usr/local/bin/cordova");
It began to work. I now have a problem with finding certificates but that will be a different question after investigating it.
I am trying to build PHP wrapper for PowerBI. I installed PowerBI Cli (https://github.com/Microsoft/PowerBI-Cli) on my local and when I run any PowerBI Cli command on my terminal, it is working well. It is working well even when I run the commands using the _www user (sudo -u _www powerbi config)
However, when I run them through PHP using either shell_exec or Symphony's Process Component (https://symfony.com/doc/current/components/process.html), I am getting the following exception:
env: node: No such file or directory.
I am facing this issue on Mac Sierra. The commands are working well on Linux using the PHP exec()
Try linking,
"ln -s /path/where/command/is stored/ /to/path/where u want to exec/"
Sometimes the program are stored in usr/local/bin/program meanwhile as per default you are executing in usr/bin/program
And then in shell use the new path you have set.
Example for linking suppose if you have path for command,
/usr/bin/powerbi then with above command you can link new path usr/powerbi after that you can use new path in exec or shell command.
Try using the full path rather than the command. Without knowing your exact path I can't tell you exactly what to do but it would be something like this:
$output = shell_exec("sudo -u _www /path/path/powerbi config");
var_dump($output);
Edit:
Or, change directories first. So using my example above, it would be:
$output = shell_exec("cd /path/path/powerbi; sudo -u _www powerbi config");
I'm trying to get an image of the raspi camera via a php script.
It's installed php5, apache2 and all necessary stuff.
Snippet: /var/www/img.php
if(isset($_GET['pic']))
system("sudo raspistill -w 512 -h 320 -o /var/www/img/img.jpg");
When I run the command directly in the terminal it's working, but the php script not. With sudo php /var/www/img.php?pic I'll get an error:
Could not read input file: /var/www/img.php
First I thought it's a problem with the permissions, but isn't working even with root privileges.
Have anybody an idea? I'm really depressed..
Thanks a lot!
Solution
first it's necessary to change the owner of the apache directory:
sudo chown www-data:www-data -R /var/www
After that it's not necessary to prepend sudo:
exec('raspistill ...');
It's also possible with popen, system, ...
I have meshlab installed in my machine running Ubuntu 14.04 OS. I can access it from command line using meshlabserver command. But problem arises whenever I try to call it from a php script using the command
<?php
system('meshlabserver 2>&1');
?>
It shows the error meshlabserver: cannot connect to X server. After going through a few websites I did the following things:
I moved the meshlabserver executable from /usr/bin to /usr/local/bin and gave it executable permissions using
sudo chmod a+x meshlabserver
But when I ran the whoami command from my php script (calling the meshlabserver), it showed www-data. So I gave executable permissions for all users to the meshlabserver using
sudo chmod 777 /usr/local/bin/meshlabserver
But still it is showing the same meshlabserver: cannot connect to X server error. meshlabserver comamnd is working fine when ran from the command line.
I really need to call meshlab from the php script for my website. Thus any help would be highly appreciated. Thanks in advance.
It seems the php script can't access your display variable. If you logged in via ssh remember to tunnel your X-server via 'ssh -X ...' Your second option is to create a virtual frame buffer using Xvfb and redirect the display variable to it:
export DISPLAY=:100.0
Xvfb :100 &
Note the ampersand for the second command as Xvfb needs to be running in the background.
a combo of prior answers works for me:
ssh -X, as well as export DISPLAY=:0.0 (on remote)
I have subversion installed on CentOs 6.4 and want to write a script (from my understanding a shell script) to run a couple of commands. My issue here is not writing the shell script but more providing a parameter to the shell script (so a function in a way) to be able to complete the request.
In essence I want to do the following:
Run script with parameter from SSH ("somscript reponame")
Create repo: svnadmin create /var/www/svn/reponame
Change repo owner: chown -R apache.apache /var/www/svn/reponame -R
Do security changes: chcon -R -t httpd_sys_content_t /var/www/svn/reponame/
And chcon -R -t httpd_sys_rw_content_r /var/www/svn/reponame
Create default directories: svn import -m 'Initial import' /tmp/svn-structure-template/ http://domain.com/svn/reponame/ (localhost is not accepted by stackoverflow)
Can anyone offer some guidance or perhaps provide an alternative I can use? Would a PHP script work (so to run it from a browser and use a query string of some sort and would this not cause some security issues as apache is the default owner and some of these may require root / sudo access).
Thank you in advance!
As Fausto said in the comment, standard Bash parameters should work fine. At ProjectLocker, we use scripts similar to what you're describing to provision new Subversion repositories, and you should just be able to reference "$1", "$2", and so on in the script.
Incidentally, you don't have to import to the http:// location if you're running on the machine with the instance, if that makes things harder. You can do:
svn import -m 'Initial import' /tmp/svn-structure-template/ file:///var/www/svn/reponame
although I'd recommend testing that first to make sure that doesn't cause an undesired permissions change. If it does, you can simply run it before the apache permission flip and the lockdown.