Shell script remotely

Question

I have one script running on server and doing some job on other server I have many scp commands and ssh commands, this is why each time I have to enter the remote server password at each remote command. is there any way to establish ssh connection between the servers so I type the remote password only once? thanks

Answer 1

I would suggest to setup an ssh config together with ssh keys. In a nutshell the config will hold an alias for one or more remote servers.

ssh remote_server1
ssh remote server2

While your config file will look something like this:

Host remote_server1
Hostname 192.168.1.12
user elmo
IdentityFile ~/.ssh/keys/remote.key
...

If an ssh config file is not for you (although I can highly recommend it), you can use sshpass as well.

sshpass -p 't@uyM59bQ' ssh username@server.example.com

Do note that the above does expose your password. If someone else has access to your account, the history command will show the code snippet above.