Simple command line text file copier (And my first Rust program!)
Simply run cargo build to compile and generate an executable at target/debug/kopier.
To run simply use the executable name followed by the path of the source file followed by the path of the destination file.
For example (from within the project directory): target/debug/kopier ~/test.txt /tmp/dest.txt.
To call it from anywhere place it in your bin folder.
Only works on .txt files with UTF-8 encoding. Other files will return an error.