Converting newline formatting from DOS to Unix and vice versa

Problem

You have some files that use Windows newline characters but you want to use them in Linux or MacOS, or vice versa.

You can use a lot of tools to do this such as sed,perl,dos2unix,unix2dos`

One simple way is to use perl so you don't have to install new programs

    perl -pi -e 's/\r\n|\n|\r/\r\n/g' file-to-convert  # Convert to DOS
    perl -pi -e 's/\r\n|\n|\r/\n/g'   file-to-convert  # Convert to UNIX

If we want to batch convert files, we can combine it with find and xargs

    # Find all .cs file and convert newline to UNIX
    find . -iname *.cs -print0 | xargs -n 1 -I {} -0 perl -pi -e 's/\r\n|\n|\r/\n/g' '{}'

References