Using cpanel on my hosting account, I created a subdomain - e.g. www.clothing.mysite.com
A cgi-bin folder was automatically created in the directory for clothing.mysite.com. Do I need it? I'm only using the subdomain to install wordpress on it. I don't really understand what the cgi-bin folder is for and I'm happy to leave it if it doesn't harm anything. Any thoughts? Thanks guys!
You can safely delete it. "cgi-bin" is hardly ever used these days.
cgi-bin historically was the only place where executable or script code (binaries, shell scripts, etc.) could be stored. It is mostly a historic relic since most hosts allow execution of scripts from anywhere.
You can safely delete "cgi-bin" folder, it's hardly ever used nowadays
Also beware that when your server got some malware scripts scans different folders and then hides on folders like cgi-bin because they rarely are checked now.
I even wrote a script before that "monitors" different folders in my server and alerts me if it found different scripts in there on my personal and clients servers too.
来源：https://stackoverflow.com/questions/2321572/should-i-delete-the-cgi-bin-folder-in-a-subdomain-i-just-created