Scdaemon LEARN - Using the GNU Privacy Guard
Description: Using the GNU Privacy Guard

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#### 5.6.2 Read all useful information from the card

           LEARN [--force]

Learn all useful information of the currently inserted card. When used without the force options, the command might do an INQUIRE like this:

               INQUIRE KNOWNCARDP <hexstring_with_serialNumber> <timestamp>

The client should just send an `END` if the processing should go on or a `CANCEL` to force the function to terminate with a cancel error message. The response of this command is a list of status lines formatted as this:

              S KEYPAIRINFO hexstring_with_keygrip hexstring_with_id

If there is no certificate yet stored on the card a single "X" is returned in hexstring_with_keygrip.