On Sat, 14 Jun 2008, buyoppy <buyoppy@yahoo.co.jp> writes: > Is there any 'isencrypted 'function available on Debian which judges > whether some data is encrypted or not? Depends on what you mean by encryption. If you mean encryption via GPG, see `file' command. OTOH, I can encrypt a plain text file via my own ad-hoc algorithm and it'll still appear as a plain text file. Regards.