ssh-add.0 revision 180741
1SSH-ADD(1) OpenBSD Reference Manual SSH-ADD(1) 2 3NAME 4 ssh-add - adds RSA or DSA identities to the authentication agent 5 6SYNOPSIS 7 ssh-add [-cDdLlXx] [-t life] [file ...] 8 ssh-add -s reader 9 ssh-add -e reader 10 11DESCRIPTION 12 ssh-add adds RSA or DSA identities to the authentication agent, 13 ssh-agent(1). When run without arguments, it adds the files 14 ~/.ssh/id_rsa, ~/.ssh/id_dsa and ~/.ssh/identity. Alternative file names 15 can be given on the command line. If any file requires a passphrase, 16 ssh-add asks for the passphrase from the user. The passphrase is read 17 from the user's tty. ssh-add retries the last passphrase if multiple 18 identity files are given. 19 20 The authentication agent must be running and the SSH_AUTH_SOCK environ- 21 ment variable must contain the name of its socket for ssh-add to work. 22 23 The options are as follows: 24 25 -c Indicates that added identities should be subject to confirmation 26 before being used for authentication. Confirmation is performed 27 by the SSH_ASKPASS program mentioned below. Successful confirma- 28 tion is signaled by a zero exit status from the SSH_ASKPASS pro- 29 gram, rather than text entered into the requester. 30 31 -D Deletes all identities from the agent. 32 33 -d Instead of adding the identity, removes the identity from the 34 agent. 35 36 -e reader 37 Remove key in smartcard reader. 38 39 -L Lists public key parameters of all identities currently repre- 40 sented by the agent. 41 42 -l Lists fingerprints of all identities currently represented by the 43 agent. 44 45 -s reader 46 Add key in smartcard reader. 47 48 -t life 49 Set a maximum lifetime when adding identities to an agent. The 50 lifetime may be specified in seconds or in a time format speci- 51 fied in sshd_config(5). 52 53 -X Unlock the agent. 54 55 -x Lock the agent with a password. 56 57ENVIRONMENT 58 DISPLAY and SSH_ASKPASS 59 If ssh-add needs a passphrase, it will read the passphrase from 60 the current terminal if it was run from a terminal. If ssh-add 61 does not have a terminal associated with it but DISPLAY and 62 SSH_ASKPASS are set, it will execute the program specified by 63 SSH_ASKPASS and open an X11 window to read the passphrase. This 64 is particularly useful when calling ssh-add from a .xsession or 65 related script. (Note that on some machines it may be necessary 66 to redirect the input from /dev/null to make this work.) 67 68 SSH_AUTH_SOCK 69 Identifies the path of a unix-domain socket used to communicate 70 with the agent. 71 72FILES 73 ~/.ssh/identity 74 Contains the protocol version 1 RSA authentication identity of 75 the user. 76 77 ~/.ssh/id_dsa 78 Contains the protocol version 2 DSA authentication identity of 79 the user. 80 81 ~/.ssh/id_rsa 82 Contains the protocol version 2 RSA authentication identity of 83 the user. 84 85 Identity files should not be readable by anyone but the user. Note that 86 ssh-add ignores identity files if they are accessible by others. 87 88DIAGNOSTICS 89 Exit status is 0 on success, 1 if the specified command fails, and 2 if 90 ssh-add is unable to contact the authentication agent. 91 92SEE ALSO 93 ssh(1), ssh-agent(1), ssh-keygen(1), sshd(8) 94 95AUTHORS 96 OpenSSH is a derivative of the original and free ssh 1.2.12 release by 97 Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo 98 de Raadt and Dug Song removed many bugs, re-added newer features and cre- 99 ated OpenSSH. Markus Friedl contributed the support for SSH protocol 100 versions 1.5 and 2.0. 101 102OpenBSD 4.1 September 25, 1999 2 103