greyhack_ChatGPT_ls_script

// command: ls
if params.len > 2 then
    print(command_info("ls_usage"))
else
    computer = get_shell.host_computer
    folderPath = current_path
    if params.len == 2 then
        folderPath = params[1]
    end if

    folder = computer.File(folderPath)
    if folder == null then
        print("ls: No such file or directory")
    else
        if not folder.has_permission("r") then
            print("ls: permission denied")
        else
            subFiles = folder.get_folders + folder.get_files
            output = ""
            for subFile in subFiles
                nameFile = subFile.name
                size = subFile.size

                if output.len > 0 then 
                    output = output + "\n"
                end if

                output = output + nameFile + "\t" + size
            end for
            
            print(format_columns(output))
        end if
    end if
end if