mp3info:tldr:cc08a

The command "mp3info ${filename-mp3}" is a command that invokes the mp3info utility with the argument being the value stored in the "filename" variable followed by the "-mp3" string.

Here's a breakdown of each component:

• "mp3info": This is the name of the utility or program that is being executed. It is likely a command-line tool specifically designed to provide information about MP3 files.

• "${filename-mp3}": This is a shell variable that is being used as an argument for the mp3info command. The syntax "${variable-name}" is used to access the value of the variable specified. In this case, "filename" is the variable name.

The "-mp3" string is appended to the value of the "filename" variable, possibly to specify the file extension or provide additional information to the mp3info utility. The exact purpose of this argument would depend on the specific functionality provided by the mp3info utility.