- don't use g in all examples - fix option for extended regex (-E is in grep :)) - spell out the -i option and remove a stray `''` from that command - use the term "expressions" in the example using -e
- don't use g in all examples - fix option for extended regex (-E is in grep :)) - spell out the -i option and remove a stray `''` from that command - use the term "expressions" in the example using -e