distccd:tldr:befd6

This command is used to run the distccd (Distributed C Compiler Daemon) as a background process or daemon and allows a selected group of hosts or clients to access it for distributed compilation.

Here is a breakdown of the command:

• distccd: This is the command to start the distccd daemon, which allows for distributed compilation.
• --daemon: This flag instructs distccd to run as a daemon or background process. This means the process will continue running even after the command prompt is closed.

• --allow ${select}: This flag is used to specify the hosts or clients that are allowed to connect to the distccd daemon. The ${select} is a placeholder that should be replaced by the actual selective option.

  The ${select} option can be specified in various ways to allow different hosts or clients:

  • An IP address or range of IP addresses: For example, --allow 192.168.0.0/24 allows any host in the 192.168.0.x range to connect.
  • A DNS name: For example, --allow example.com allows the host with the DNS name "example.com" to connect.
  • A file containing a list of allowed IP addresses or DNS names: For example, --allow /path/to/allowed_hosts.txt reads the list of allowed hosts from the specified file.

So, overall, this command starts the distccd daemon, runs it as a background process, and allows a specified group of hosts or clients to connect to it for distributed compilation tasks.