supervisord:tldr:b0a85

The command supervisord -c ${filename} is used to start the supervisord process with a specified configuration file.

Here's a breakdown of the command components:

• supervisord: It is the main program of Supervisord, a process control system for Unix-like systems.
• -c: It is a flag used to indicate that a configuration file will be provided.
• ${filename}: It is a placeholder for the name of the configuration file. The ${filename} suggests that the actual name of the file will be provided as an argument when running the command. For example, if the configuration file is named supervisord.conf, the command would be supervisord -c supervisord.conf.

In summary, this command starts the supervisord process and specifies the configuration file to be used through the -c flag followed by the filename as an argument.