Display all lines of hello.txt that contain the word "Hi" and 5 lines below each?

Question

linux

Guys, I need to do a task on theory, tell me, did I formulate the request correctly?

grep -B5 "Hello" /var/log/hello.txt

or

$ grep -B5 "Hello" /var/log/hello.txt

P,S. If I'm a total noob...

Answer 1

Probably not "-B 5", but "-A 5". "-B" will output lines above, not below. So
grep -A5 "Привет" /var/log/hello.txt
But it's not accurate ;-)