How to batch rename 10,000 folders on a Linux server?

I need to rename approximately 10,000 folders located on a Linux server. All I need to do is replace the space in the folder name (as in Big House) with an underscore (turning it into Big_House for example).

How can I automate this process?

 

I guess shell scripting (or through perl) can make it easy for you.
I hope some linux guru would come to your rescue in this thread soon.

 

Pop the below code in a php script and chmod it so it can execute (chmod +x). Please test it out in a controlled environment first, I didn't really do any real world testing on it.

You might want to add set_time_limit() if the script is timing out because of so many folders.

#!/usr/bin/php -q

<?php

$count = 0;

if (($dh = opendir("./")))
{
    while (($file = readdir($dh)) !== false)
    {
       if ($file == "." || $file == "..") continue;
       if (!is_dir($file)) continue;

       $new_filename = str_replace(" ", "_", $file);
       rename($file, $new_filename);
       $count++;
       echo "Renaming $file -> $new_filename \n";
    }
    echo "Renamed: $count files \n";
}

?>

PHP:

 

Thank you very much! The script worked perfectly - all the folders were correctly renamed in about 5 mins or so!
That script was a huge timesaver - thanks again

 

Hmm...good one codyro

 

I have a similar problem.
Is there any solution that would replace the references of those folders and files in the HTML files?