Check the signature of one or more OpenPGP-signed files. This is similar in operation to gpg --verify but uses a different keyring, ~/.gnupg/trustedkeys.gpg. Also, gpgv assumes that the keyring is trusted, and it cannot edit or update it. By contrast, gpg --verify can go to a keyserver to verify signatures that are not in the local keyring, and offers various levels of trust. In both cases, you can use a detached signature file
Display a short help message.
Use this flag to ignore incorrect dates on signatures. An incorrect date can be a sign of fraud, but is often just a result of an incorrectly set clock.
Use the specified file as a keyring, in addition to the default ~/.gnupg/trustedkeys.gpg.
Use the specified directory as the GPG home directory, instead of the default (set in the GNUPGHOME variable, or, if that is unset, ~/.gnupg).
Send log output to the specified file descriptor. By default, log output goes to stderr. Use of file descriptors is described in the DETAILS section of the GPG documentation.
Send special status messages to the specified file descriptor.