将某些文件从特定子目录移到新目录

Question

How do I move only certain files (not all files), from specific subdirectories (not all subdirectories), into a new directory?

The files that need to be moved have been listed in a CSV file and are about 85,000 in number. They have been mentioned with their absolute paths. All the files possess the same extension, ie, .java . The number of specific subdirectories is about 13,000.

Is there a Python script (preferred) or a Shell script to do this?

NB: The forums that I searched on returned solutions on how to move all files from within a single subdirectory into a new directory. They are mentioned below:

1. https://www.daniweb.com/programming/software-development/threads/473187/copymove-all-sub-directories-from-a-folder-to-another-folder-using-python

2. http://pythoncentral.io/how-to-copy-a-file-in-python-with-shutil/

3. Filter directory when using shutil.copytree?

4. https://unix.stackexchange.com/questions/207375/copy-certain-files-from-specified-subdirectories-into-a-separate-subdirectory

Answer 1

Something like this might work for you:

import os
import csv

def move_file(old_file_path, new_directory):
    if not os.path.isdir(new_directory):
        os.mkdir(new_directory)
    base_name = os.path.basename(old_file_path)
    new_file_path = os.path.join(new_directory, base_name)
    os.rename(old_file_path, new_file_path)

def parse_csv_file(csv_path):
    csv_file = open(csv_path)
    csv_reader = csv.reader(csv_file, delimiter=',', quotechar='"')
    paths = list(csv_reader)
    csv_file.close()
    return paths

if __name__ == '__main__':
    old_file_paths = parse_csv_file('your_csv_path')
    for old_file_path in old_file_paths:
        move_file(old_file_path, 'your_new_directory')

This assumes that your CSV file only contains paths, delimited by commas, and all of those files exist.

Answer 2

Assuming that your CSV file looks like this:

George,/home/geo/mtvernon.java,Betsy
Abe,/home/honest/gettys.java,Mary

You could move the files using this shell command:

$ cut -d, -f2 < x.csv | xargs -I '{}'  mv '{}' /home/me/new-directory