How do you search for files containing DOS line endings (CRLF) with grep on Linux?

Question

I want to search for files containing DOS line endings with grep on Linux. Something like this:

grep -IUr --color \'\\         


        

Answer 1

dos2unix has a file information option which can be used to show the files that would be converted:

dos2unix -ic /path/to/file

To do that recursively you can use bash’s globstar option, which for the current shell is enabled with shopt -s globstar:

dos2unix -ic **      # all files recursively
dos2unix -ic **/file # files called “file” recursively

Alternatively you can use find for that:

find -exec dos2unix -ic {} +            # all files recursively
find -name file -exec dos2unix -ic {} + # files called “file” recursively