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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

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gpgv [options] [detached-signature] [signed-files]

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


-h,-?, --help

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.

-k,--keyring file

Use the specified file as a keyring, in addition to the default ~/.gnupg/trustedkeys.gpg.

--homedir dir

Use the specified directory as the GPG home directory, instead of the default (set in the GNUPGHOME variable, or, if that is unset, ~/.gnupg).

--logger-fd FD

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.


Minimal output.

--status-fd FD

Send special status messages to the specified file descriptor.


Verbose mode. More informative.

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