How i can run shell command via a Model or Controller. Not through Artisan command or $schedule.
And also how i can run a sudo command?
I have try the next options. Nothing works:
1:
$process = new Process('sudo /usr/bin/touch /var/www/html/Poptin test2.html');
$process->run();
// executes after the command finishes
if (!$process->isSuccessful()) {
throw new ProcessFailedException($process);
}
2:
shell_exec(escapeshellcmd('sudo /usr/bin/touch /var/www/html/Poptin test2.html));
3:
exec('sudo /usr/bin/touch /var/www/html/Poptin test2.html);
Help please!
Have just tested running exec in Laravel 5.5 and it works.
This is what i tried:
$test = exec('echo 123');
dd($test);
I know you are running 5.2, but it should be no different i terms of running this.
I can see that you have forgot an ending ' in the exec method and also the shell_exec.
Instead of writing
exec('sudo /usr/bin/touch /var/www/html/Poptin test2.html);
You should write
exec('sudo /usr/bin/touch /var/www/html/Poptin test2.html');
Also make sure that the command you are trying to run works when running it in the shell directly.
what you have done is correct but you have to do it like this
for example
shell_exec('sudo /usr/bin/touch /var/www/html/Poptin test2.html') give a try and one more thing using of shell_exec in controller is a bad practice.
Related
I have a Laravel App with Short Schedule package installed and a crontab to execute it.
Inside the executed method I have a SHELL_EXEC function with some code inside it.
The problem is that when the code runs automatically using the cron, the SHELL EXEC doesn't work. The output is null.
When I run the method directly using php artisan or by simply running the schedule using php artisan manually, it works.
To have a clear vision of what's going on:
Inside the crontab -e I have the following
* * * * * php /var/www/html/project/artisan short-schedule:run --lifetime=60
The cron executes this method which has the following code:
$shell_command = '/home/paul/elrondsdk/erdpy --verbose tx new --receiver xxxx --send --pem asdfa.pem --gas-limit 300 --nonce 12';
$output = shell_exec($shell_command);
Log::info('output', [$output]);
If it runs automatically using the cron, the $output is NULL.
If I run the command manually, I get a proper output.
Initially I thought I need to specify the exact path in the shell exec because cron doesn't not PATH. Unfortunately did not solve my problem.
Thanks!
I tried to run the command manually or to run php artisan schedule:run and wait and it worked!
It doesn't work ONLY when its runs by the cron.
Well, I need to run a Docker using a PHP function. I have a web page where pushing a link I execute a shell order using shell_exec or exec. This works for me if the execution is like an ls or something that expects a result. The problem is that if the command is to run the Docker (or for example a ping) it doesn't work.
What I want is when the user clicks the link, the shell will execute a command to run Docker in the browser, and the page will be redirected there.
For exemple, if I use shell_exec('firefox'); this should open a new firefox browser, but it doesn't work. It seems that the browser is opened but few seconds later is closed.
This is the Docker execution that doesn't work.
public function executeDocker() {
$result = shell_exec('docker run --rm -p 3838:3838 shiny/gsva_interactive /usr/bin/shiny-server.sh');
echo "<br><br>Execution: ".$result;
}
shell_exec will only return the output of a, in this case Docker, command only when the command has exited completely. In the case of ping (it will just keep pinging) and probably in the case of your Docker image, the process will never exit by itself, so it will never give a response.
Using passthru instead of shell_exec should give you the commandline output of your Docker script right back as a response.
If the Docker container is not meant to exit you should probably start it in detached mode with $containerId = shell_exec('docker run -d --rm -p 3838:3838 shiny/gsva_interactive /usr/bin/shiny-server.sh'), so the docker run command will exit. This will return the container id, which you can use with $result = shell_exec("docker ps -f \"id=$containerId\"") to check if the container is running correctly and redirect the user if it is.
i was having the same issue running docker exec via shell_exec.
shell_exec('docker exec -it containerid /usr/bin/cmd);
Getting rid of the -i option worked for me.
Finally I solved it. The problem was in the user group and permissions. In the system that I was using, CentOS, apache server uses a user called apache. This user needs to be in the docker group and reboot the services.
Now it works. Thanks to everyone who helped me.
I am trying to Execute a multiple commands in php using exec() and shell_exec but i am getting a null value back which i shouldn't and nothing is happening (if i copy and paste the strings below in the command line it will work fine and accomplish the job needed) this is the commands i am using:
$command = "cd /../Desktop/FolderName;";
$command .= 'export PATH=$PATH:`pwd`;';
$command .= 'Here i execute a compiler;';
and then i use the escapeshellcmd()
$escaped_command = escapeshellcmd($command);
then
shell_exec($escaped_command);
any ideas what i am doing wrong and i also tried escapeshellarg() instead of escapeshellcmd()?
Solution: the Problem was the permission of the execution compiler for other owners is non and this was the problem.
because when you are using exec() function in php the owner of the file will be www-data so you need to give permission for the www-data either from the ACL of ubuntu or whatever linux based operating system(you can know the owner by doing this exec('whoami')), or by the files you need to execute.
(Sorry my bad English)
On Linux you can add your Commands in a Shell Script.
You can put this in any file:
#!/bin/bash
cd /../Desktop/FolderName
export PATH=$PATH:`pwd`
EXECUTE COMPILER
And save this as fille.sh
Then, add execution permissions:
chmod +x path/to/file.sh
From PHP, you can call this Script executing:
shell_exec('sh path/to/file.sh');
Hope this helps!
Im new to php shell commands so please bear with me. I am trying to run the shell_exec() command on my server. I am trying the below php code:
$output = shell_exec('tesseract picture.tif text_file -l eng');
echo "done";
I have the picture.tif in the same directory as the php file. In my shell I can run this without a problem.
It takes a while to run the code, then it doesnt make the text_file like it does when I run it in command prompt.
Per your comment:
Should I write a loop in shell
instead?
You can write a very simple shell script to run the command in a loop. Create the script file first:
touch myscript.sh
Make the script executable:
chmod 700 myscript.sh
Then open it with a text editor such as vim and add this:
for (( i = 0 ; i <= 5; i++ ))
do
tesseract picture.tif text_file -l eng
done
Thats the very basics of it (not sure what else you need), but that syntax should help get you started. To run the script, do this if you're in the same directory as the script:
./myscript.sh
Or specify the full path to run it from anywhere:
/path/to/mydir/myscript.sh
Could this be a permissions issue? My guess is that PHP isn't running with the same permissions that you do when you execute the command directly from the command prompt. What OS are you running on?
I don't know what the deal is here…
So I want to run an applescript: sudo osascript myscript.scpt
This works fine in the terminal, but not when I execute it via PHP's exec(); nothing happens. The console says
no tty present and no askpass program specified ; TTY=unknown ; …
I did my research, and it seems I'm missing the password for the sudo command. I tried a couple different ways to get around this, including:
writing %admin ALL=(ALL) ALL in /etc/sudoers
and proc_open() instead of exec()
none of which seem to be working, consequently driving me CrAzY!
So basically, is there a clear-cut way to get PHP to execute a simple terminal command?
EDIT: to clarify, myscript.scpt is a simple appleScript that changes the onscreen UI (for a larger project). In theory, simply osascript myscript.scpt should be enough, however the sudo is for some reason necessary to invoke some response from the system. If the sudo could be somehow eliminated, I don't think I would be having this permissions problem.
It sounds like you need to set up passwordless sudo. Try:
%admin ALL=(ALL) NOPASSWD: osascript myscript.scpt
Also comment out the following line (in /etc/sudoers via visudo), if it is there:
Defaults requiretty
I think you can bring specific access to user and command with visudo something like this:
nobody ALL = NOPASSWD: /path/to/osascript myscript.scpt
and with php:
#exec("sudo /path/to/osascript myscript.scpt ");
supposing nobody user is running apache.
php: the bash console is created, and it executes 1st script, which call sudo to the second one, see below:
$dev = $_GET['device'];
$cmd = '/bin/bash /home/www/start.bash '.$dev;
echo $cmd;
shell_exec($cmd);
/home/www/start.bash
#!/bin/bash
/usr/bin/sudo /home/www/myMount.bash $1
myMount.bash:
#!/bin/bash
function error_exit
{
echo "Wrong parameter" 1>&2
exit 1
}
..........
oc, you want to run script from root level without root privileges, to do that create and modify the /etc/sudoers.d/mount file:
www-data ALL=(ALL:ALL) NOPASSWD:/home/www/myMount.bash
dont forget to chmod:
sudo chmod 0440 /etc/sudoers.d/mount
I recently published a project that allows PHP to obtain and interact with a real Bash shell. Get it here: https://github.com/merlinthemagic/MTS
The shell has a pty (pseudo terminal device, same as you would have in i.e. a ssh session), and you can get the shell as root if desired. Not sure you need root to execute your script, but given you mention sudo it is likely.
After downloading you would simply use the following code:
$shell = \MTS\Factories::getDevices()->getLocalHost()->getShell('bash', true);
$return1 = $shell->exeCmd('/path/to/osascript myscript.scpt');
Run sudo visudo command then set -%sudo ALL=(ALL:ALL) to %sudo ALL=(ALL:ALL) NOPASSWD: ALL it will work.
I had a similar situation trying to exec() a backend command and also getting no tty present and no askpass program specified in the web server error log. Original (bad) code:
$output = array();
$return_var = 0;
exec('sudo my_command', $output, $return_var);
A bash wrapper solved this issue, such as:
$output = array();
$return_var = 0;
exec('sudo bash -c "my_command"', $output, $return_var);
Not sure if this will work in every case. Also, be sure to apply the appropriate quoting/escaping rules on my_command portion.
The best secure method is to use the crontab. ie Save all your commands in a database say, mysql table and create a cronjob to read these mysql entreis and execute via exec() or shell_exec(). Please read this link for more detailed information.
killProcess.php
I think directly calling a sudo command might be difficult because you are setting up the whole server to work without a password.
Perhaps as an alternative you could setup a CRONjob as root and monitor a flag file. Once the flag file exists it will run the osascript myscript.scpt and then delete the flag file.
This way you will keep SUDO secure from a config point of view and the server safer. To run the script you just need to touch the flag file from PHP.
It would of course introduce a delay of however many minutes you running the CRON job. It would also mean that you would have to redirect the output to a file and have a async monitor of the output, but it will depend on your application if this is a problem or not.
But it is an alternative that might protect the server.