Command option Sample:grep -NUM

Search command sample in the internet.It is the result.


grep -NUM option

grep -NUM is available not the -1 right    linux - What does `grep -1` do? - Super User : http://superuser.com/questions/1060709/what-does-grep-1-do
grep -NUM not working correctly    grep - GNU Project - Free Software Foundation (FSF) : http://gnu.gds.tuwien.ac.at/software/grep/changes.html