How to grep '---' in Linux? grep: unrecognized option '---'

Question

I have a newly installed web application. In that there is a drop down where one option is ---. What I want to do is change that to All. So I navig

Answer 1

use grep's -e option, it is the right option for your requirement:

   -e PATTERN, --regexp=PATTERN
          Use PATTERN as the pattern.  This can be used to specify multiple search patterns, or to protect a pattern beginning with a hyphen (-).  (-e is specified
          by POSIX.)

to protect a pattern beginning with a hyphen (-)