distccd:tldr:497e6

This command is using the distccd command-line tool to start the distcc daemon and specify some options. Here is an explanation of the provided options:

• --daemon: Starts the distccd daemon in the background.
• --jobs ${4}: Sets the number of simultaneous jobs that distccd can process. ${4} is likely a placeholder for a command-line argument or a variable that should be replaced with a specific value.
• --nice ${5}: Sets the "niceness" value for the distccd process. The niceness value determines the priority level of a process, where higher values indicate lower priority. ${5} is likely another placeholder for a command-line argument or a variable that should be replaced with a specific value.

Overall, this command starts the distccd daemon as a background process with specific job and priority settings, specified by ${4} and ${5} respectively.