cotton:tldr:28cdc

The cotton -u ${base_url} -s ${filename}.md command is most likely a command-line instruction.

Based on the given syntax, here is a breakdown of the command:

• cotton: It represents the name or alias of a command or executable program.
• -u ${base_url}: This is a flag or an option preceded by a hyphen -. It indicates that the value of ${base_url} should be provided as an argument to the -u option. ${base_url} is a variable, and its actual value needs to be substituted in the command. It could be a URL or a base address used for some operation.
• -s ${filename}.md: This is another flag or option. The -s option expects ${filename}.md as its argument. ${filename} is a variable, and it should be replaced with the actual name of a file. The .md extension suggests that the file might be a Markdown file.

So, when you run this command with the appropriate values for ${base_url} and ${filename}, it will execute the cotton program with the provided options and arguments. The purpose, functionality, and specific behavior of the cotton program are not clear without more context.