How to pass variable value to gpg commands

Question

$importkey = system('gpg --import newkey.asc . $username');

need to pass the file name as a variable.so that file name with its contents can be import in gnupg keyring.

$gpg = system('gpg --recipient userid  --output filename --armor  --encrypt filename to encrypt', $retvalue);

how can i pass the recipient email id(userid) and the filename as variable to gpg commands

thanks!

Answer 1

Change the ' to " for example and then you can pass in variables:

$importkey = system("gpg --import newkey.asc . $username");