ghc:tldr:44d95

This command is used to compile a Haskell source file using the GHC (Glasgow Haskell Compiler) compiler. Here is a breakdown of the command:

• ghc: This is the executable command for GHC, the compiler used to compile Haskell programs.
• ${file-hs}: This is a placeholder for the name of the Haskell source file you want to compile. The ${file-hs} syntax is commonly used in text editors or integrated development environments (IDEs) to refer to the currently open file. It will be replaced with the actual file name before the command is executed.

So when you run this command, GHC will compile the Haskell source file specified by ${file-hs} and generate the corresponding object code or executable file, depending on the options and flags used.