Delete duplicate photos In a large number of photos

1 , command line to obtain the MD5 value of each file, output to a CSV file (Cygwin has md5sum tools);

e:\photo> md5sum * > C:\md5.csv

2. Thetext editor replaces the "*" in the CSV file with "," (EditPlus can be sorted directly);

3 , Excel opens, sorts first, C1 input formula =if ($A 1= $A 2, "Yes", "No") and fills down the entire column, Ctrl+f finds a row with a value of Yes, indicating duplicates of the next row of files.

PS : File through, QQ network transmission is compressed after how to compare?

Delete duplicate photos In a large number of photos