print results after each command

[aristosv]

I am using this to send a command to multiple Linux computers via ssh. It prints the results after it has processed all computers. How can I see the results after each computer is finished, so I don't have to wait for all computers to finish?

<form action="commands.php" method="post" target="main">
    <input type="checkbox" name="clients[]" value="192.168.1.11">Client001<br>
    <input type="checkbox" name="clients[]" value="192.168.1.12">Client002<br>
    <br/>
     <select name="commands">
<option value="">Select Command</option>
<option value="uptime | sed 's/.*up \([^,]*\), .*/\1/'">Uptime</option>
<option value="printf $(free | grep -e-/+ | awk '{print $3/($3+$4) * 100.0 ''}' | cut -d '.' -f1)%%">Memory Usage</option>
     </select>
  <br>
  <br/>
  <input type="submit" value="Submit" />
  </form>

<?php
  include('Net/SSH2.php');
  $user = "user";
  $pass = "pass";
  $ip = $_POST['clients'];
  $ssh = new Net_SSH2($ip);
  $cmds = $_POST['commands'];

  if(!empty($_POST['clients'])) {
      foreach($_POST['clients'] as $ip) {
          $ssh = new Net_SSH2($ip);
          if (!$ssh->login($user, $pass)) {exit('Login Failed');}
          echo " " . $ssh->exec($cmds) . "<br>";
      }
  }
 ?>

[Weedpacket]

Since you are telling the script to generate output after each command, there's probably an issue with buffering going on: putting [man]flush[/man] after echoing the response may help with that.

A complete rearchitecting might use more JavaScript control on the client side and server push on the server side, or maybe have the client generate multiple asynchronous requests (one for each selected IP) and display the responses as they come back.

[aristosv]

This is very strange. If I am running a simple script that just echoes something, it's working as expected. For example:

<option value="/home/user/test.sh">Test echo</option>

/home/user/test.sh

echo this is test1
echo this is test2
echo this is test3

This shows the 3 echoes just fine.

But when I start testing a bit more complicated scripts, it doesn't show anything. For example:

#!/bin/bash

# import variables
source "${BASH_SOURCE%/*}/variables"

if [ -n "$(ls -A $localaudiomedia)" ]
then
    if [[ $omxplayer_local_audio_status == *"#"* ]]
    then
      echo "remounting rw"
      mount -o remount,rw /
      echo "disabling services"
      sed -i '/^#/!s/\(.*\)/#\1/g' $display
      echo "enabling local audio"
      sed -i '/omxplayer-local-audio/s/^#//g' $display
      echo "restarting"
      reboot
    else
      echo "local audio is already enabled";
    fi
else
  echo "local audio folder is empty"
fi

This echoes nothing.

[aristosv]

by the way flush worked!