In these modern days, ASCII as a character encoding standard is a subset of UTF-8. As for the other OS-related posts refer to:
Prerequisites
- Shell environment
- Homebrew
Solution
Step 1. Install the GNU version of grep.
brew install grep
Note(s): Although grep is installed by default as part of coreutils, brew doesn’t automatically replace it, instead it adds a prefix g, so you can call it as ggrep.
Step 2. Run the following command:
ggrep --color='auto' -P -n "[\x80-\xFF]" somefile.txt
Conclusion
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