SSH, The Secure Shell: The Definitive Guide, 2nd Edition
by Daniel J. Barrett, Richard E. Silverman, Robert G. Byrnes
Environment Variables
Variable | Set by | In | Meaning |
|---|---|---|---|
SSH_ASKPASS | ssh user | OpenSSH | Path to askpass program |
SSH_AUTH_SOCK | ssh-agent | OpenSSH | Path to socket |
SSH2_AUTH_SOCK | ssh-agent | Tectia | Path to socket |
SSH_CLIENT | sshd | OpenSSH | Client socket info |
SSH2_CLIENT | sshd | Tectia | Client socket info |
SSH_CONNECTION | sshd | OpenSSH | Client and server socket info |
SSH_ORIGINAL_COMMAND | sshd | OpenSSH | Client’s remote command string |
SSH_ORIGINAL_COMMAND2 | sshd | Tectia | Client’s remote command string |
SSH_SOCKS_SERVER | ssh user | Tectia | SOCKS firewall information |
SSH_TTY | sshd | OpenSSH | Name of allocated TTY |
SSH2_TTY | sshd | Tectia | Name of allocated TTY |