find file with numeric values greater than a specified number

Question

When I run the following command, I get a list of files

find . -type f -name '*_duplicate_[0-9]*.txt'

./prefix_duplicate_001.txt 

./prefix_duplicate_002.txt 

./prefix_duplicate_003.txt 

./prefix_duplicate_004.txt 

./prefix_duplicate_005.txt

Now I'm only interested in files which have the numbers greater than or equal to 003. How can I get this done?

Thank you in advance.

Answer 1

Using -regex option in find, you can tweak regex to get all files with 3 or higher value after _duplicate_ with leading zeroes:

find . -regextype posix-extended -type f \
       -regex '.*_duplicate_0*([3-9]|[1-9][0-9])[0-9]*\.txt'

On OSX use this find:

find -E . -type f -regex '.*_duplicate_0*([3-9]|[1-9][0-9])[0-9]*\.txt'

./prefix_duplicate_003.txt
./prefix_duplicate_004.txt
./prefix_duplicate_005.txt