013-compare-2-directories.md

Compare 2 directories

1. First count number of files in a directory (recursively):

find DIR_1 -type f | wc -l

2. Then do the comparison, using pv to see progress:

diff -rqs DIR_1 DIR_2 | pv -l -s NUM_FILES > /tmp/logfile

Where NUM_FILES should be replaced with the number you got from the 1st command.

3. When diff finishes, you can run the following command to see if different files were found:

cat /tmp/logfile | grep -iv "identical"