Question

Write a copy file program to prompt for arguments if none are supplied. The program should look like this:

$mycopy
Source file name? phonebook
Destination file name? phonebook.txt

Answer 1

To write a copy file program that prompts for arguments if none are supplied, you can use a programming language like Python or C++. Check the number of command-line arguments and prompt the user if necessary. Use the shutil.copy() function to perform the file copy.

Step-by-step explanation:

In order to write a copy file program to prompt for arguments if none are supplied, you will need to use a programming language like Python or C++. Here's an example of how you can accomplish this in Python:

import sys
import shutil

if len(sys.argv) != 3:
source_filename = input('Source file name? ')
destination_filename = input('Destination file name? ')
else:
source_filename = sys.argv[1]
destination_filename = sys.argv[2]

shutil.copy(source_filename, destination_filename)

This program checks if the number of command-line arguments is 3. If not, it prompts the user for the source and destination file names. Otherwise, it uses the provided arguments. The shutil.copy() function is used to copy the file from the source to the destination.