Question

I want to use grep command to extract those lines in a text file which contain a special pattern but i also want to extract the next line of those specific lines. Is it possible using grep?

Answer 1

You can specify how many lines to print after a match With the -A option:

grep -A1 pattern file

Demo:

$ cat file
line one 
line two
line three

$ grep -A1 'one' file
line one 
line two

Next time man grep!