SSH-ADD(1) | General Commands Manual | SSH-ADD(1) |
ssh-add
— adds
private key identities to the authentication agent
ssh-add |
[-cDdkLlqXx ] [-E
fingerprint_hash] [-t
life] [file ...] |
ssh-add |
-s pkcs11 |
ssh-add |
-e pkcs11 |
ssh-add
adds private key identities to the
authentication agent, ssh-agent(1). When run without
arguments, it adds the files ~/.ssh/id_rsa,
~/.ssh/id_dsa,
~/.ssh/id_ecdsa, and
~/.ssh/id_ed25519. After loading a private key,
ssh-add
will try to load corresponding certificate
information from the filename obtained by appending
-cert.pub to the name of the private key file.
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 the
SSH_AUTH_SOCK
environment variable must contain the
name of its socket for ssh-add
to work.
The options are as follows:
-c
-D
-d
ssh-add
has been run without arguments, the keys
for the default identities and their corresponding certificates will be
removed. Otherwise, the argument list will be interpreted as a list of
paths to public key files to specify keys and certificates to be removed
from the agent. If no public key is found at a given path,
ssh-add
will append .pub
and retry.-E
fingerprint_hash-e
pkcs11-k
-L
-l
-q
-s
pkcs11-t
life-X
-x
DISPLAY
and SSH_ASKPASS
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
(by default
“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.)SSH_AUTH_SOCK
Identity files should not be readable by anyone but the user. Note
that ssh-add
ignores identity files if they are
accessible by others.
Exit status is 0 on success, 1 if the specified command fails, and
2 if ssh-add
is unable to contact the authentication
agent.
ssh(1), ssh-agent(1), ssh-askpass(1), ssh-keygen(1), sshd(8)
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 versions 1.5 and 2.0.
August 29, 2017 | Debian |