Linux script for inserting SSH keys

For personal use, and all, I’ve created this script to make my job sometimes easy. I have multiple servers and i didnt want to write every time same command for every server, and because of that, i created this script. All my project’s are on my GitHub account and here is link where you can look for this repository: SSH-KEY-SERVER-ADD.

Script that adds multiple SSH keys to multiple servers.

Instructions

To download this script, click THIS LINK or follow the commands below.

To download it from the server, if you did not download it from the browser, you must enter the following command.

wget https://github.com/tomeksdev/ssh-key-server-add/releases/download/v1.0.0/import-ssh-keys.tar.gz

OR

git clone https://github.com/tomeksdev/ssh-key-server-add.git

If you downloaded from a browser or with the wget command, you need to unpack the downloaded file with the following command. If you are working with git, you can skip this step.

tar -xvf archive.tar.gz

Once the file is unzipped or cloned with Git, we only need to do two things to make the script work. First, we need to add an executable right to the import_ssh.sh file, which we can then run.

chmod +x import_ssh.sh

Secondly, we need to fill or modify the Server.txt and Keys.txt configuration files:

• server.txt

  Add multiple servers with root@ip_address. Each server in a new line.

• keys.txt

  Add or change keys if necessary. Also each ssh key in a new line.

And last but not least run the script:

sh import_ssh.sh

OR

./import_ssh.sh

Vesrions

version v1.1.0

• The script now checks on each server whether the file authorized_keys exists
• It now checks if the key from the keys.txt file exists in the authorized_keys file, and skips it in this case
• It checks if the file server.txt exists or is empty
• Now the script can be executed without deleting all ssh keys from the servers
• Create nicer echo on the console

Version v1.0.0

• Add all keys from keys.txt file to all servers reading server.txt files
• Old ssh keys must be deleted on each server to run the script again
• If the keys.txt file does not exist or is empty, the script will not run