copy lines containing word from one file to another file in linux

Question

I want to copy lines containing certain words from file1 to file2.

Suppose file1:

ram 100 ct 50
gopal 200 bc 40
ra         


        

Answer 1

egrep -n '\bct\b' file1 > file2

By the way, grep -n selects lines together with line numbers. If that's not your intention then grep ct file1 > file2 would suffice.