hostname:tldr:cec68
hostname: Set current host name.
$ hostname ${new_hostname}
try on your machine
The command "hostname ${new_hostname}" is a shell command used to set the hostname of a system to a variable value called "new_hostname".
In this command, the variable "new_hostname" is enclosed within curly brackets (${new_hostname}). The use of the curly brackets indicates that the shell should substitute the value of the variable instead of treating it as a literal string.
So, when the command is executed, the value stored in the variable "new_hostname" will be used to set the hostname of the system. The exact functionality of this command may vary depending on the operating system or shell being used.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.