Add an new user with his/her public key to SSHOUT user list, or add another key for an existing user. The key string is the SSH2 public key, which is in form '<key-type> <base64-encoded-key> [<comment>]', or omit <key-type> and <comment>, just '<base64-encoded-key>'; see sshd(8) for more details on SSH2 public key format.

Options:

-a <key>

Specify the public key for user; if this option is not specified, public key string will be read from stdin.

-f

Force add key; add new key for existing user without ask.

Remove user <user-name> and his/her all public keys from SSHOUT user list. If an user have multiple public keys registered in user list, and you want remove some of the user's keys, instead of all keys; don't use this command, edit the user list file .ssh/authorized_keys manually instead.

Options:

-f

Force remove user without ask.

List registered user names and publib keys. Doing this action also verifys the format of the authorized_keys file. Key fingerprints will be printed instead of original public keys, if option '-h' is used; the available hash algorithms used to hash public keys are md5 and sha256.

Print current MOTD to stdout.

Set a new MOTD, or delete the existing MOTD if option '-d' is specified.

Options:

-m <message>

Set MOTD to <message>; if this option is not specified, stdin will be read to get the message.

-d

Delete existing MOTD if any. This option cannot be used together with '-m'.