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How to use expect script in SSH server?
Here is the script I created for automatically login to the SSH server and then login with super user and then run a simple command. Notice the first line that specifies that expect script will be used as interpreter.
When do I need to create SSH config file?
The ~/.ssh directory is automatically created when the user runs the ssh command for the first time. If the directory doesn’t exist on your system, create it using the command below: By default, the SSH configuration file may not exist, so you may need to create it using the touch command :
When do I need to create a new SSH Directory?
The ~/.ssh directory is automatically created when the user runs the ssh command for the first time. If the directory doesn’t exist on your system, create it using the command below:
Which is the expect regular expression for SSH?
The first Yes/No choice is added to make sure that it doesn’t fail if remote server key is not already imported. The other expect regular expressions varies across the servers, for my server it ends with “#” but for some other servers it might end with “$”, so you may need to edit it accordingly.
Is there a script to automate SSH sessions?
The Expect script is the entire automated two-way conversation. In an Except script, dialog from both sending and receiving computers is scripted. A common use of Expects scripts is to automate SSH sessions between a local computer and a remote server. Except is available as an installable software package for most Linux distros.
What’s the best way to use expect in Bash?
I’d try to use only Expect: This will wait for Enter and then return to (for a moment) the interactive session. The easiest way is to use sshpass. This is available in Ubuntu / Debian repositories and you don’t have to deal with integrating expect with Bash. The above command can be easily integrated with a Bash script.
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):
What do you need to know about expect script?
Expect script is a great linux/unix utility. I have to deal with a lot of unix servers in my daily life, whether it’s at work or it’s my hosting server. So I need to remember a lot of SSH users, their passwords and then SU users and passwords.