Christophe,
I really apologize because I feel I'm always answering to your questions asking another one like "
but why do you want to do this?"
nevertheless I can't refrain myself to ask it again here
Why do you want to clean Squid cache? Is it to ensure you got fresh data from web server? what's about "shift+reload"? Or maybe you have different need... therefore my question
I feel like Jesuit answering question by asking another further question