Bash output in web browser

Question

I made a script in bash for getting pings into a file.

#!/bin/sh
echo "Starting script"
echo "Working.."
while true; do
    DATE=$(date)
    PING=$(ping -c 1 google.pl | tail -1| awk '{print $4}' | cut -d '/' -f 2)
    echo "$DATE Ping: $PING" >> logs/ping.txt
    sleep 5000
done

But due to lack of free space i changed echo "$DATE Ping: $PING" >> logs/ping.txt to just echo "$DATE Ping: $PING" to recive every line in cmd, and it worked

But still the main idea is to run the scipt through the web browser and display its output. (i can run it tho but i have no idea how to show echo output in a browser)

Other *.sh scripts which i am using have normal php code inside so i thought that there is a way to do that in php too. — Grafitter
– Grafitter, Commented Feb 26, 2014 at 13:59
Just like I said i would like to see output of this script in web browser not just in console. — Grafitter
– Grafitter, Commented Feb 26, 2014 at 13:59

user986959 · Accepted Answer · 2014-02-26 14:10:42Z

3

You can call the bash script from php using:

exec('myscript.sh');

And then open the ping.txt using:

$myFile = "ping.txt";
$fh = fopen($myFile, 'r');
$theData = fread($fh, filesize($myFile));
fclose($fh);
echo $theData;

Without text file:

$ping = shell_exec('myscript.sh');
echo "<pre>$ping</pre>";

edited Feb 26, 2014 at 14:10

answered Feb 26, 2014 at 14:02

user986959

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5 Comments

Grafitter Over a year ago

Yup its good option but like I said i cant use script version with ping.txt due to lack of space, it must be something like echo in cmd but in web browser

Grafitter Over a year ago

Output will be shown only when script will stop and I need realtime preview

user986959 Over a year ago

Have a look at that - stackoverflow.com/questions/1281140/…

Joel Peltonen Over a year ago

Does $ping contain the stdout as string? That means that shell_exec is synchronous, right?

user986959 Over a year ago

@Nenotlep Yes, it's a string. I'm not a PHP expert but I believe the shell_exec is synchronous.

kguest · Accepted Answer · 2014-02-26 14:07:27Z

1

With a bit of ajax and using Net_Ping you could have a page that updates in near-realtime. Alternatively use shell_exec to run ping from inside your php and echo the output returned from it.

answered Feb 26, 2014 at 14:07

kguest

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Comments

2MAS · Accepted Answer · 2014-02-26 14:06:15Z

0

If you need to execute your bash script from PHP and display the output in a browser, then just use the shell_exec() PHP function

Example from php.net:

<?php
$output = shell_exec('/path/script-name-here');
echo "<pre>$output</pre>";
?>

answered Feb 26, 2014 at 14:06

2MAS

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2 Comments

Grafitter Over a year ago

Output will be shown only when script will stop and I need realtime preview

2MAS Over a year ago

Typically a webserver will always server the content from start to finish. It isnt really designed to keep a connection open and keep sending your information. So, along the lines of what kguest wrote; you will need to make multiple asynchronous requests with javascript, and display the results in the browser as each response comes back in.

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