How do I automate this in bash?

I'm trying to find a way to do this in a bash script instead of manually typing 'yes' when ssh asks:

Code:

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$ ssh `hostname` # enter "yes"
$ exit
$ ssh localhost # enter "yes"
$ exit

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I tried this, but it didn't work:

Code:

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echo "yes\nexit\n" > $(ssh `hostname`)

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It still waits here for me to type something:

Code:

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The authenticity of host 'myhost (10.1.2.3)' can't be established.
RSA key fingerprint is 32:5d:aa:67:1f:76:bb:68:dd:d2:79:39:cc:21:ee:e0.
Are you sure you want to continue connecting (yes/no)?

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Any ideas?

Linux Bash Script For SSH RSA Fingerprint | Jaxov

Thanks, that worked perfectly. :)

Why not just add -o StrictHostKeyChecking=no to the command line?

Quote:

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Originally Posted by brewbuck

Why not just add -o StrictHostKeyChecking=no to the command line?

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I don't know much about ssh options, but I don't think that will add the host to the known_hosts file which is what I need to do.
I need to make it so that when some other programs do "ssh `hostname`" they won't get prompted to enter yes/no.