git grep(1) -I -F -n -e
Print lines matching a pattern
    Don’t match the pattern in binary files.
-F, --fixed-strings
    Use fixed strings for patterns (don’t interpret pattern as a regex).
-n, --line-number
    Prefix the line number to matching lines.
    The next parameter is the pattern. This option has to be used for patterns starting with - and should
    be used in scripts passing user input to grep. Multiple patterns are combined by or.
source manpages: git-grep