Usage of ./rzgrep:
  -C int
    	display a number of lines around a matching line
  -color
    	color matches on terminal (otherwise mark with <b> </b> tags)
  -e string
    	regular expression to search for. Syntax defined here: https://github.com/google/re2/wiki/Syntax
  -in string
    	file or directory to scan
  -j	use java decompiler for .class files
  -v	debug option