How to use shell script to SSH in to remote machine?
You can ‘expect’ prompts like the rsa key and have it answer and continue. Example of an embedded expect function inside a shell (/bin/sh) script. I handles several scenarios including rsa prompt. This function sends a single linux command to the remote host. It does not check the output, but it will be on the screen.
When to use SSH to execute Linux command?
This is quite a common task for Linux system administrators, when it is needed to execute some command or a local Bash script from a one Linux workstation or a server on another remote Linux machine over SSH.
How to SSH to multiple machines at the same time?
The accepted answer sshes to machines sequentially. In case you want to ssh to multiple machines and run some long-running commands like scp concurrently on them, run the ssh command as a background process. Connect to remote machine using Expect Script.
How to write shell script for multiple machines?
Put this in your shell script: If you have multiple machines that you want to do the same command on you would repeat that line with a semi colon. For example, if you have two machines you would do this: Replace USER with the user of the computer. Replace HOST with the name of the computer.
How to run bash script on a remote server?
SSH: Run Bash Script on Remote Server. The equally common situation, when there is some Bash script on a Linux machine and it needs to connect from it over SSH to another Linux machine and run this script there.
How to create a bash script to check the SSH connection?
My problem is that the remote machines are not very reliable, and they are not always up. I need a bash script that would check if the SSH connection is up. Before actually creating the keys for future use. EDIT: Another approach would be to use nmap (you won’t need to have keys or login-stuff):
How to generate SSH keys for local machine?
To avoid that you could generate ssh keys and authorize users by these keys. To generate ssh keys run ssh-keygen -t rsa, answer questions and copy public key to remote host (machine B) to ~/.ssh/authorized_keys file. Private key should be saved in ~/.ssh/id_rsa on local machine (A).