Usual GnuPG commands

I tend to forget these very usual GnGPG commands as I use them only once in while. Now I won't forget them, or at least I'll known how to quickly find them :

Sign a file :
<br />gpg --detach-sign --armor myfile.tar.gz<br />
Encrypt and decrypt a file for my own use :
<br />gpg --encrypt --recipient 'MyName' foo.txt<br />gpg --output foo.txt --decrypt foo.txt.gpg<br />
Encrypt a free text for someone :
<br />echo 'Hello world' | gpg --output encrypted_hello.txt --encrypt --armor -r myfriend@whatever.com<br />
Get my own fingerprint :
<br />gpg --fingerprint myaddress@whatever.com<br />