Go to TogaWare.com Home Page.
GNU/Linux Desktop Survival Guide
by Graham Williams
Google

SSH Agents


Entering the passphrase every time you want to do a remote copy or make a remote connection can be tiring. There is a simple mechanism provided to avoid this. All you need do is to start up a shell or other similar command that already knows what your passphrase is (by you telling it just once). This is done with ssh-agent to start the shell and ssh-add to store the passphrase for this shell:



  $ ssh-agent bash
  $ ssh-add             (or ssh-add .ssh/id_dsa)
  Need passphrase for .ssh/id_dsa
  Enter passphrase for .ssh/id_dsa 
  Identity added: .ssh/id_dsa (.ssh/id_dsa)
  $ ssh alpine

The ssh-add will prompt you for your passphrase but from then on all further interaction with the remote host will not require the passphrase again.

The -l option of ssh-add lists the key(s) currently kept in memory for this ssh-agent. The -d option removes an identity from memory.


Copyright © 1995-2014 Togaware Pty Ltd
Support further development through the purchase of the PDF version of the book.
Brought to you by Togaware.