Using grep to match md5 hashes

Question

How can I match md5 hashes with the grep command?

In php I used this regular expression pattern in the past:

/^[0-9a-f]{32}$/i

But I t

Answer 1

You want this:

grep -e "[0-9a-f]\{32\}" filename

Or more like, based on your file format description, this:

grep -e ":[0-9a-f]\{32\}" filename