Simpler Navigation coming for Servers and Operating Systems
Coming soon: a much simpler Servers and Operating Systems section of the Community. We will combine many of the older boards, and you won't have to click through so many levels to get at the information you need. If you are looking for an older board and do not find it, check the consolidated boards, as the posts are still there.
Showing results for 
Search instead for 
Did you mean: 

Use ssh in a script

Go to solution
June Cui
Occasional Advisor

Use ssh in a script

How can I set a ssh key to allow user to use ssh in a script without asking for password?
Thank you.
James A. Donovan
Honored Contributor

Re: Use ssh in a script

You'll need to make sure that RSA authentication is enabled in your sshd_config

1. Login as the user and generate a keypair using ssh-keygen. You can use a null passphrase, but I don't recommend it.
2. Add the contents of the $HOME/.ssh/ file to the $HOME/.ssh/authorized_keys file on all machines where you wish to log in using RSA authentication.
3. If you don't use a null passphrase then to execute your script, write a small wrapper script which uses ssh-agent to launch your script. 'ssh-agent myscript'
4. Your script will contain something like the following:
# myscript --- does stuff
# This script is running in the shell launched with ssh-agent
# Load the passphrase into memory
cat .passphrase |ssh-add -p

Carefully review all the man pages on the ssh commands.
Remember, wherever you go, there you are...