How do I copy a file?

Copying a file depends on the operating system and tools or programming languages you’re using. Here are some of the easiest ways to do it:

1. Copying a File Using the Command Line

Windows (Command Prompt or PowerShell)

  copy source.txt destination.txt

Works for text and binary files.

Use xcopy or robocopy for advanced options.

Linux/macOS (Terminal)

  cp source.txt destination.txt

Use cp -r for directories.

cp -i prompts before overwriting.

2. Copying a File in Python

If you’re coding in Python, the shutil module makes it simple:

import shutil

shutil.copy("source.txt", "destination.txt")

Preserves the file contents but not metadata.

Use shutil.copy2() to keep metadata like timestamps.

3. Copying a File in C/C++

std::ifstream src("source.txt", std::ios::binary);

std::ofstream dest("destination.txt", std::ios::binary);

dest << src>

Uses file streams for efficient copying.


Best Practices When Copying Files


•  Check if the file exists before copying.

•  Use absolute paths to avoid errors.

•  Handle permissions—some files require admin/root access.