rsync.py

rsync.py

# mimic rsync
# mainly for running on os that doesn't have rsync
# python rsync.py <source_dir> <destination_dir>
# 
import os
import shutil
import sys

def rsync(source_dir, destination_dir):
    # list all files in source_dir
    files = os.listdir(source_dir)

    if not os.path.exists(destination_dir):
        print(f"Creating directory {destination_dir}")
        os.makedirs(destination_dir)

    for file in files:
        # if file is a directory, recursively rsync it
        if os.path.isdir(os.path.join(source_dir, file)):
            rsync(os.path.join(source_dir, file), os.path.join(destination_dir, file))
        else:
            # copy only if the source file is newer than the destination file
            # or the destination file doesn't exist
            if not os.path.exists(os.path.join(destination_dir, file)) or os.path.getmtime(os.path.join(source_dir, file)) > os.path.getmtime(os.path.join(destination_dir, file)):
                try:
                    print(f"Copying {os.path.join(source_dir, file)} to {os.path.join(destination_dir, file)}")
                    shutil.copy(os.path.join(source_dir, file), os.path.join(destination_dir, file))
                except Exception as e:
                    print(f"Error copying {os.path.join(source_dir, file)} to {os.path.join(destination_dir, file)}: {e}")

def main():
    source_dir = sys.argv[1]
    destination_dir = sys.argv[2]
    rsync(source_dir, destination_dir)

if __name__ == "__main__":
    main()