ssh-add.0 revision 197670
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 identities, removes identities from the agent. 34 If ssh-add has been run without arguments, the keys for the de- 35 fault identities will be removed. Otherwise, the argument list 36 will be interpreted as a list of paths to public key files and 37 matching keys will be removed from the agent. If no public key 38 is found at a given path, ssh-add will append .pub and retry. 39 40 -e reader 41 Remove key in smartcard reader. 42 43 -L Lists public key parameters of all identities currently repre- 44 sented by the agent. 45 46 -l Lists fingerprints of all identities currently represented by the 47 agent. 48 49 -s reader 50 Add key in smartcard reader. 51 52 -t life 53 Set a maximum lifetime when adding identities to an agent. The 54 lifetime may be specified in seconds or in a time format speci- 55 fied in sshd_config(5). 56 57 -X Unlock the agent. 58 59 -x Lock the agent with a password. 60 61ENVIRONMENT 62 DISPLAY and SSH_ASKPASS 63 If ssh-add needs a passphrase, it will read the passphrase from 64 the current terminal if it was run from a terminal. If ssh-add 65 does not have a terminal associated with it but DISPLAY and 66 SSH_ASKPASS are set, it will execute the program specified by 67 SSH_ASKPASS and open an X11 window to read the passphrase. This 68 is particularly useful when calling ssh-add from a .xsession or 69 related script. (Note that on some machines it may be necessary 70 to redirect the input from /dev/null to make this work.) 71 72 SSH_AUTH_SOCK 73 Identifies the path of a unix-domain socket used to communicate 74 with the agent. 75 76FILES 77 ~/.ssh/identity 78 Contains the protocol version 1 RSA authentication identity of 79 the user. 80 81 ~/.ssh/id_dsa 82 Contains the protocol version 2 DSA authentication identity of 83 the user. 84 85 ~/.ssh/id_rsa 86 Contains the protocol version 2 RSA authentication identity of 87 the user. 88 89 Identity files should not be readable by anyone but the user. Note that 90 ssh-add ignores identity files if they are accessible by others. 91 92DIAGNOSTICS 93 Exit status is 0 on success, 1 if the specified command fails, and 2 if 94 ssh-add is unable to contact the authentication agent. 95 96SEE ALSO 97 ssh(1), ssh-agent(1), ssh-keygen(1), sshd(8) 98 99AUTHORS 100 OpenSSH is a derivative of the original and free ssh 1.2.12 release by 101 Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo 102 de Raadt and Dug Song removed many bugs, re-added newer features and cre- 103 ated OpenSSH. Markus Friedl contributed the support for SSH protocol 104 versions 1.5 and 2.0. 105 106OpenBSD 4.6 June 12, 2007 2 107