When I try the following PHP code:
exec('/usr/bin/latex ...')
I'll get an 127-exit code. What can I do to stop this?
Regards,
Kevin
127 error code indicates the command was not found by bash. You sure that latex is installed?
Why do not use ssh2 ?
something like this:
//Connect first
if (!($con = #ssh2_connect('192.168.0.1', 22))) {
echo "[FAILED_CONNECT]\n";
exit(1);
}
if (!#ssh2_auth_password($con, "your_user", "your_password")) {
echo "[FAILED_AUTH_DENIED]\n";
exit(1);
}
echo "[OK]\n CONNECTED!";
// the command line
$stdout_stream = ssh2_exec($con, "/usr/bin/latex ...");
// close connection
fclose($stdout_stream);
Related
So I have question which in my head should seem very simple to solve.
I want to ssh to a server, which I have done a ton of times, and then make a shell execute which I have done a ton of times as well, but it is not working.
The code i am using
<?php
$ip = '1.2.3.4';
$cmd = "ssh user#".$ip;
$result = shell_exec($cmd." 'sudo /bin/systemctl stop wildfly.service'");
echo "<pre>output: $result</pre>";
echo "<div class='alert alert-success'><strong>SUCCESS</strong><br>Wildfly node has now restarted</div>";
?>
Running the command directly from the terminal
ssh user#1.2.3.4 sudo /bin/systemctl stop wildfly.service
It works, but running it within php gives me nothing, and it not doing anything.
Can someone maybe guide me to what I am doing wrong with my shell_exec?
Thanks in advance!
function execPrint($command) {
try {
$result = array();
exec($command.' 2>&1', $result);
foreach ($result as $line) {
print($line . "\n");
}
echo '------------------------' . "\n" . "\n";
} catch (\Exception $e) {
print($e);
}
http_response_code(200);
}
i made this function to get result
add 2>&1 in last of the CMD
use print with every line
use try and catch to catch any error
The user attempting to execute those shell commands from php is likely _www and not you. Try this code in your php to gain insight:
$shellscript = 'whoami';
$sr = shell_exec($shellscript);
echo '['.$sr.']';
Make sure the shell_exec function is not disabled. It usually is disabled by default in CPanel accounts PHP.ini and PHP-FPM .ini files.
You can check it using this validation
if (is_callable('shell_exec') && (false === stripos(ini_get('disable_functions'), 'shell_exec'))) {
echo "shell_exec enabled";
} else {
echo "shell_exec disabled";
}
It's the most common reason i've found for shell_exec to return always empty
You can also execute a quick command for testing purpouses
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
echo "Command: shell_exec('ls -lart')";
try {
$output = shell_exec('ls -lart');
echo "<pre>$output</pre>";
} catch (Exception $e) {
echo $e->getMessage();
}
I'm creating a button on my web page.I want that when someone presses this button an execution of a process of Linux commands on my first server (like "cd file" "./file_to_execute"..) when these commandes are done and finished i want to connect on another server by ssh and to execute another commands.
the probleme is how can i know that the commands before are already finished to proceed to the second part which is to connect on another server .
to resume :
first step connect on the first server , execute some commands
=> when these commands are done ( the part i dont know how to do it )
second step : to connect on another server and execute some others commands.
I'm searching for a way that will allows me to add some pop up to inform the user of my web page that he finished the first step and he started the second.
<?php
$hostname = '192.177.0.252';
$username = 'pepe';
$password = '*****';
$commande = 'cd file && ./file_one.sh';
if (false === $connection_first = ssh2_connect($hostname, 22)) {
echo 'failed<br />';
exit();
}
else {
echo 'Connected<br />';
}
if (false === ssh2_auth_password($connection_first, $username, $password)) {
echo 'failed<br />';
exit();
}
else {
echo 'done !<br />';
}
if (false === $stream = ssh2_exec($connection_first, $commande)) {
echo "error<br />";
}
?>
Thanks
PS: sorry for my English, I'm from Barcelone
To handle events where an exception occurs i would recommend using a try/catch statement, like the one below:
try {
echo inverse(5) . "\n";
echo inverse(0) . "\n";
} catch (Exception $e) {
echo 'Caught exception: ', $e->getMessage(), "\n";
}
When you're trying to handle events and need to know when they finish, there are a few ways to achieve this. You can either set a boolean to true after the command has been executed (like what you are already doing). OR you can return output from the command by printing the output to a txt file and then echoing out the returns of this file. See code below:
exec ('/usr/bin/flush-cache-mage > /tmp/.tmp-mxadmin');
$out = nl2br(file_get_contents('/tmp/.tmp-mxadmin'));
echo $out;
At this point you can create conditions based off of what is returned in the $out variable.
My first time to deploy matlab exec in php and i need ur help.
I have a matlab script compiled as sampleExe.exe (standalone app) with a single argument 'IdNo' to processes images. When i call it thru command line using sampleExe 2014000, the program runs and gives the desired output. However, I am having trouble when deploying/calling sampleExe.exe file from php as it gives me no output at all. :(
Here's the code i tried based on this: Call matlab exe from php is not working well
<?php
define("EVAL_IMAGE","sampleExe.exe");
$target=isset($_REQUEST['IdNo'])?trim($_REQUEST['IdNo']):"";
if($target==""){
echo "No folder name is passed";
exit();
}
passthru(EVAL_IMAGE." ".$target);
?>
Any help is very much appreciated. Btw, I tried running it in a localhost and sampleExe.exe is also save in c:/wamp/www
<?php
try {
define("EVAL_IMAGE","mainProg1.exe");
$target=isset($_REQUEST['IdNo'])?trim($_REQUEST['IdNo']):"";
if($target==""){
echo "No folder name is passed";
exit();
}
set_time_limit(300);
$return = exec(EVAL_IMAGE." ".$target);
echo "return = " .$return;
}catch (Exception $e) {
echo 'Message: ' .$e->getMessage();
}
exit(0); ?>
I want to execute a command on a remote machine and store the out of that command in a variable using php
Here is what i tried
$command = 'exec("whoami")';
$connection = ssh2_connect($ip,$port);
ssh2_auth_password($connection,$user,$pass);
$test = ssh2_shell($connection,$command);
echo $test;
According to me $test should output root
However nothing is return , I am sure i am missing something.....
php-pecl-ssh2 is already installed and no error is returned
I guess your command is incorrect :
$command = 'whoami';
And you should also add this 2 lines to the end to get your output :
if ( $connection = ssh2_connect($ip,$port) ) {
echo 'Error occured while connecting to server via ssh';
}
if (!ssh2_auth_password($connection,$user,$pass)) {
echo 'Error occured while authenticating via ssh';
}
if(!$test = ssh2_shell($connection,$command)){
echo 'Error occured while executing remote command via ssh';
} else {
stream_set_blocking($test, true);
echo stream_get_contents($test);
}
I've created a Perl script which connects to a host and executes some commands, and it works fine! I'm kinf of proud 'cause I'm a real newb with Perl ^^...
A overview of the perl script:
use Expect;
$|=0;
$Expect::Debug=0;
$Expect::Exp_Internal=0;
$Expect::Log_Stdout=1;
my $ip = $ARGV[0];
my $file = $ARGV[1];
my $username = $ARGV[2];
my $password = $ARGV[3];
open(CONF,$file) || die "File not found";
while(<CONF>){
$con .= $_;
}
my #conf = split("#",$con);
my $ssh = Expect->spawn("ssh -q -l $username $ip") || die "Spawn ssh failed, $!";
if($ssh->expect(5,"yes")) {
print $ssh "yes\r";
if($ssh->expect(10,"assword")) {
print $ssh "$password\r";
}
else {
warn $ssh->exp_error()."\n";
next;
}
}
elsif($ssh->expect(10,"assword")) {
print $ssh "$password\r";
}
else {
warn $ssh->exp_error()."\n";
next;
}
#Variables Globales
my $rcmd;
my #lcmd;
my $lrcmd;
$regExpCmd = "\#";
$regExpCmd2 = "^(A|B).*(\$|\#)";
$regExp = "\n";
$ssh->expect(10,$regExpCmd);
my $cmd0 = "environment no more\r";
my $cmdExit = "logout\r";
$ssh->send($cmd0);
$ssh->expect(5,$regExpCmd);
foreach my $step (#conf) {
my #lines = split("\n",$step);
foreach my $val (#lines){
$val =~ s/^\s+//;
$val =~ s/\r//;
$ssh->send("$val\r");
$i *= 1;
if(!$ssh->expect(2,$regExpCmd2)){
$i *= 0;
# if($ssh->expect(1,"MINOR")){
# die "Erreur mineur: $val";}
if($ssh->expect(2,"Error")){
die "Erreur majeur: $val";
}
}
}
$ssh->expect(1,$regExpCmd2);
}
$ssh->send($cmdExit);
print $i;
Now, I'd like to call it from PHP...
I have tried different way:
Like calling my perl script with the exec() function :
<?php
$arg1 = "MY.ADD.IP";
$arg2 = "MY/FILE";
$arg3 = "USERNAME";
$arg4 = "PASSWORD";
$result = exec("perl /path/of/perl/script.pl $arg1 $arg2 $arg3 $arg4");
if($result == 1) {
return true: }
else {
return false;
} ?>
but it is not doing anything (Checked on the remote host and so SSH connexion at all)...
I also tried using the PECL Perl interpreter for PHP, calling my script like that:
<?php
$perl = new Perl();
$perl->require('myperl.pl'); ?>
but I didn't figure how to send some arg to my script..
The fact is that I need to call it with an jQuery $.ajax request and I need to wait for the end of the script before sending back any "answer" to jQuery.
Everything I tried did not work, as the PHP script ends "before" the Perl Script...
PS: I also tried to create a Package in PERL called with PHP, like below:
package Connect;
sub new{
#Init some var... }
sub connect {
#Something like the script above.....
}
<?php
$perl = new Perl();
$perl->require('myscript.pl');
$perl->call('connect',$args);
?>
Have you ever succeeded in something like that? I really don't know what to do :(
Why don't you use ssh from php? It looks like the ssh part would be easier than what you've done in perl, and you can still get the perl regexes using preg_ functions.
PHP.net ssh2 manual page
PHP.net preg_match manual page
phpseclib, a pure PHP SSH implementation, has something very similar to expect.
An example follows:
<?php
include('Net/SSH2.php');
$sftp = new Net_SSH2('www.domain.tld');
$sftp->login('username', 'password');
echo $sftp->read('username#username:~$');
$sftp->write("sudo ls -la\n");
$output = $sftp->read('#Password:|username#username:~\$#', NET_SSH2_READ_REGEX);
echo $output;
if (preg_match('#Password:#', $lines)) {
$ssh->write("password\n");
echo $sftp->read('username#username:~$');
}
?>
It does "sudo ls -la" and waits for either "Password:" or "username#username:~".