lpr:tldr:60c10

This command is used to print a file using the lpr command-line utility. Here is the breakdown of each component:

• lpr: It is the command used to print files in Unix/Linux systems.
• -#: It is an option used to specify the number of copies of the file to be printed. ${2} is a placeholder for the number of copies. For example, if you want to print 5 copies of the file, the command would be lpr -# 5 ${filename}.
• ${filename}: It is another placeholder for the name of the file that you want to print. You need to replace it with the actual filename, including the path if necessary.