With the shell_exec command I get a response if the result of the executed command is a single text:
shel_exec('dpkg -l > list-softwares-dpkg.txt');
How to have the answer (in PHP or Python, would another command need to have an answer?) of executing a command when the answer is not a unique text like in the example:
shel_exec('apt remove pacote_exemplo > removed-package.txt');
Obs In the example it runs and uninstalls, but I can not tell if the command was executed or not.
popen other than exec and the like may interact similar to a file I / O handler, probably with it will be able to get the "output "all, for example:
$response = '';
$handle = popen('apt-get remove ' . $package . ' 2>&1', 'r');
if ($handle) {
while (feof($handle) === false) {
$response .= fgets($handle); //Pega até encontrar uma quebra de linha
}
pclose($handle);
} else {
die('Erro ao executar o programa');
}
if (empty($response)) {
die('Resposta voltou vazia');
}
var_dump($response);
An example with ping (which is something that returns the output one by one):
<?php
$response = '';
$handle = popen('ping 127.0.0.1', 'r');
if ($handle) {
while (feof($handle) === false) {
$response .= fgets($handle); //Pega até encontrar uma quebra de linha
}
pclose($handle);
} else {
die('Erro ao executar o programa');
}
if (empty($response)) {
die('Resposta voltou vazia');
}
var_dump($response);
If you want to display the result directly in the output, make echo within while , like this:
<?php
$response = '';
$handle = popen('ping 127.0.0.1', 'r');
if ($handle) {
while (feof($handle) === false) {
echo fgets($handle); //Pega até encontrar uma quebra de linha
}
pclose($handle);
} else {
die('Erro ao executar o programa');
}
The interesting thing is that you can already take part of the answer and with stripos or preg_match detect if the command is waiting for type Y / N to confirm something and customize yourself to situation you want, for example assuming you ran apt-get remove and the terminal displayed something like:
Do you want to continue [Y / N]
The while would lock in the fgets that contains this command and at this point you could use a fwrite , something like:
Note: changing the second parameter to
a+, which opens for reading and writing; puts the file pointer at the end of the handle.
$handle = popen('apt-get remove ' . $package . ' 2>&1', 'a+');
if ($handle) {
while (feof($handle) === false) {
$response = trim(fgets($handle));
if (stripos($response, 'do you want to continue') !== false) {
fwrite($handle, "Y\n");// O \n é para enviar a quebra de linha que creio ser necessária para disparar
}
}
pclose($handle);
} else {
die('Erro ao executar o programa');
}
The solution found was in PHP using the SSH2 class of the phplibsec package to execute the command.
Here's an example:
$input = 'apt-get remove ' . $package . ' -y';
$ssh = new \phpseclib\Net\SSH2('localhost');
if (!$ssh->login('user', 'pass')) {
exit('Erro ao logar');
}
echo json_encode($ssh->exec($input));
In the example, connect to server ssh (in this case myself), and execute the command, 'echo' printa the response that would come when executing on the terminal.
Simple answer, go down.
shel_exec('apt remove pacote_exemplo > removed-package.txt'; echo $?);
The $? variable returns the return code of the last executed command. If the return code is different from 0 has some problem in the command, then you should analyze the return code.