mkfile:tldr:9999e

The command "mkfile -n ${4m} ${first_filename} ${second_filename}" creates one or more files with a specific size using the "mkfile" command.

Here's a breakdown of the command:

• "mkfile": This is the command itself, used to create a file or multiple files.
• "-n": This flag is used to specify the size of the file(s) to be created.
• "${4m}": This is a parameter that sets the size of the file. In this case, it is set to 4 megabytes.
• "${first_filename}": This is another parameter that represents the name of the file to be created. It could be the first file with a specific name.
• "${second_filename}": This is a parameter that represents the name of the second file to be created, with another specific name.

In summary, the command "mkfile -n ${4m} ${first_filename} ${second_filename}" creates two files of 4 megabytes each, with the filenames specified by the values of "first_filename" and "second_filename" variables.