explainshell.com - grep.1posix %22User Avi%22 mylog2.log %7C awk %7B%27print %246%27%7D %7C xargs -I user-id grep user-id mylog2.log %7C grep -v %22has id%22

%22User Avi%22 mylog2.log %7C awk %7B%27print %246%27%7D %7C xargs -I user-id grep user-id mylog2.log %7C grep -v %22has id%22

search a file for a pattern

-v     Select lines not matching any of the specified patterns.  If  the  -v  option  is  not  specified,
       selected lines shall be those that match any of the specified patterns.

source manpages: grep