i want to do this for many lines 100+ so manual way will be hard
Full example file containing:
user1:user1
user2:user2
user3:user3
user4:user4
user5:user5
user6:user6
user7:user7
user8:user8
user9:user9
user10:user10
example Needed result:
user1:user1
user3:user3
user4:user4
user6:user6
user7:user7
user9:user9
user10:user10
so line 2 and line 5 and line 7 is removed and this what i want because when i try it in notepad++ it won't found because they are in different lines
but i want to find or search for all lines together specially for big file like 1000+ lines