look:tldr:ffe87

The command "look ${prefix} ${filename}" is used to search for a specific word or string in a sorted file. Here's an explanation of its components:

• "look": This is the command itself, which is used to perform a dictionary-style lookup in a sorted file.
• "${prefix}": This is a parameter or variable that represents the word or string you want to look for in the file. It needs to be replaced with the actual prefix you want to search for. For example, if you want to search for the prefix "abc" in the file, you would replace ${prefix} with "abc".
• "${filename}": This is another parameter or variable that represents the name of the file in which you want to perform the lookup. It needs to be replaced with the actual name of the file you want to search in. For example, if the file name is "words.txt", you would replace ${filename} with "words.txt".

So, when you run the command with the appropriate values for ${prefix} and ${filename}, it will search for all the words in the specified file that have the given prefix and display those words.