chkconfig:tldr:bd7cf

The command "chkconfig ${sshd} on" is a Linux command used to manage the automatic startup of system services during boot time.

Here's a breakdown of the command:

• "chkconfig": It is the command used to manage the system services.
• "${sshd}": This is a variable that represents the name of the service. In this case, it is assumed that the variable "sshd" holds the name of the SSH server service.
• "on": This argument is used to indicate that the service should be automatically started during system boot.

So, when you execute the command "chkconfig ${sshd} on", it will enable the SSH server service to start automatically when the system boots up.