Question

I have a folder called Client which contains many subfolders. I want to create a Perl script to look at each of those subfolders and check for a folder there. If it is there, I want to skip it and move on, if it is not there, I want to create it and do some processing.

How do I go about looping through all of the subfolders and checking for the directory I want? I have found a lot of information on how to get all the files in a folder and/or subfolders, but nothing on checking for a directory within each subfolder.

Answer 1

Augh! Too much complexity in the other answers. The original question doesn’t appear to be asking for a recursive traversal. As far as I can see, this is a perfectly sensible solution, and vastly more readable to boot:

foreach my $dir (glob "Client/*") {
    next if ! -d $dir;              # skip if it's not a directory
    next if -d "$dir/subfolder";    # skip if subfolder already exists
    mkdir "$dir/subfolder" or die;  # create it
    do_some_processing();           # do some processing
}

Seriously folks: opendir/readdir? Really?