code: def do_igrep(self, params):
          
          self.grep(params.path, params.content, re.IGNORECASE, params.show_matches)
docs: \x1b[1mNAME\x1b[0m
          igrep - Prints znodes with a value matching the given text (ignoring case)
  
  \x1b[1mSYNOPSIS\x1b[0m
          igrep [path] <content> [show_matches]
  
  \x1b[1mOPTIONS\x1b[0m
          * path: the path (default: cwd)
          * show_matches: show the content that matched (default: false)
  
  \x1b[1mEXAMPLES\x1b[0m
          > igrep / UNBound true
          /passwd: unbound:x:992:991:Unbound DNS resolver:/etc/unbound:/sbin/nologin
          /copy/passwd: unbound:x:992:991:Unbound DNS resolver:/etc/unbound:/sbin/nologin