csshx:tldr:12fa2

This command is used to initiate a cluster SSH (cssh) session to multiple remote hosts.

Here's the breakdown of the command and its components:

• csshX: This is the command to initiate the cluster SSH session. It is used when you want to execute the same commands on multiple remote hosts simultaneously.

• ${user@hostname1}: This represents the username and hostname of the first remote host. The format is "username@hostname". You would replace user with the actual username and hostname1 with the actual hostname or IP address of the remote host.

• ${user@hostname2}: This represents the username and hostname of the second remote host. Similar to the previous component, you would replace user with the actual username and hostname2 with the actual hostname or IP address of the second remote host.

• --ssh_args "-i ${path-to-key_file-pem}": This option allows you to pass additional SSH arguments to the underlying SSH command. In this case, the -i flag is used to specify the identity (private key) file. ${path-to-key_file-pem} represents the path to the private key file in PEM format. You would replace this with the actual path to your private key file.

So, overall, the command will open a cluster SSH session to the specified remote hosts using the provided username, hostname, and private key file.