#! /usr/bin/env python3

# Copy one file's atime and mtime to another

import sys
import os
from stat import ST_ATIME, ST_MTIME # Really constants 7 and 8

def main():
 if len(sys.argv) != 3:
 sys.stderr.write('usage: copytime source destination\n')
 sys.exit(2)
 file1, file2 = sys.argv[1], sys.argv[2]
 try:
 stat1 = os.stat(file1)
 except OSError:
 sys.stderr.write(file1 + ': cannot stat\n')
 sys.exit(1)
 try:
 os.utime(file2, (stat1[ST_ATIME], stat1[ST_MTIME]))
 except OSError:
 sys.stderr.write(file2 + ': cannot change time\n')
 sys.exit(2)

if __name__ == '__main__':
 main()