Write and compile some programs to accomplish the standard Unix commands in Hask

Question

Write and compile some programs to accomplish the standard Unix commands in Haskell. You may find the documentation for the following libraries helpful:  System.Directory, System.IO.

"cp" - (copy file) - which takes a from and to arguments.

"pwd" - (print working directory) prints the name of the current directory

"ls" - (list) which lists the names of files in the current directory. Like "dir" on windows.

"cat" - (concatenate files) takes a filename and outputs it's contents to standard output.

Explanation / Answer

1) cp-copy

program:-

in unix:- cp source_file_name destination_file_name;

in haskell:-

2)pwd:-

in unix:-   pwd ;

in haskell:- // cmd that simply displays the current working directory

3) ls :- list of files

in unix:- ls;

in haskell:-

4) cat:- concatenate a file

in unix:- cat> a; // opens a file named "a" for writing or displays "a"'s content if any

in haskell:- main = putStrLn "hello world"

how to save compile and run the haskell program: -

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