nms:tldr:3babe

This command is composed of two parts, using the pipe operator (|) to redirect the output of the cat command into the nms command with specific options.

1. cat ${filename}: This part uses the cat command in Unix/Linux to display the contents of the file specified by the ${filename} variable. The ${filename} is a placeholder for a variable that should be replaced with an actual file name when executing the command.

2. nms -a -f ${select}: The output generated by the cat command is passed as input to the nms command. Here, nms is a standalone command or program, and the options used are:

   • -a: An option that tells the nms command to perform a specific action or behavior, which may have been predetermined within the nms program.

   • -f ${select}: This option specifies a file or pattern to be used as input for further processing by the nms command. The ${select} is again a placeholder for a variable, which should hold the name of the desired file or pattern.

Combining these two parts with the pipe operator (|) allows the output of cat to be used as the input for nms, enabling further processing or actions depending on the specific behavior of the nms command.