pax:tldr:98d3e

This command is using the pax utility to create a tar archive file. Let's break down the various components:

• pax: The command-line utility used for creating, extracting, and modifying archive files.
• -wf: This option specifies that we want to create a new tar archive file. The w flag tells pax to write the files to the archive, and the f flag indicates the following argument is the name of the tar file we want to create.
• ${target-tar}: This is a placeholder for the name of the target tar file. The actual filename would be substituted in place of ${target-tar} when executing the command.
• ${filename1} ${filename2} ${filename3}: These are placeholders for the names of the files that need to be included in the tar archive. The actual filenames would be substituted in place of the placeholders when running the command.

So, in summary, this command is creating a tar archive file with the given target tar filename and including the specified filenames in the archive.