ssh-add - adds RSA or DSA identities to the authentication agent SYNOPSIS
ssh-add -s reader
ssh-add -e reader DESCRIPTION
ssh-add adds RSA or DSA identities to the authentication agent, ssh-agent(1). When run without arguments, it adds the file $HOME/.ssh/identity. Alternative file names can be given on the command line. If any file requires a passphrase, ssh-add asks for the passphrase from the user. The passphrase is read from the user's tty. ssh-add retries the last passphrase if multiple identity files are given.
The authentication agent must be running and must be an ancestor of the current process for ssh-add to work.
Contains the protocol version 1 RSA authentication identity of the user. This file should not be read- able by anyone but the user. Note that ssh-add ignores this file if it is accessible by others. It is possible to specify a passphrase when generating the key; that passphrase will be used to encrypt the private part of this file. This is the default file added by ssh-add when no other files have been speci- fied.
$HOME/.ssh/id_dsa Contains the protocol version 2 DSA authentication identity of the user.
$HOME/.ssh/id_rsa Contains the protocol version 2 RSA authentication identity of the user.
If ssh-add needs a passphrase, it will read the passphrase from the current terminal if it was run from a terminal. If ssh-add does not have a terminal associated with it but DISPLAY and SSH_ASKPASS are set, it will execute the program specified by SSH_ASKPASS and open an X11 window to read the passphrase. This is particularly useful when calling ssh-add from a .Xsession or related script. (Note that on some machines it may be necessary to redirect the input from /dev/null to make this work.)
OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH. Markus Friedl contributed the support for SSH protocol ver- sions 1.5 and 2.0. SEE ALSO
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