[SOLVED] Output only the first pattern-line and its following line

Issue

I need to filter the output of a command. I tried this.

bpeek | grep nPDE

My problem is that I need all matches of nPDE and the line after the found file. So the output would be like:

iteration nPDE
1         1
iteration nPDE
2         4

The best case would be if it would show me the found line only once and then only the line after it.

I found solutions with awk, But as far as I know awk can only read files.

Solution

There is an option for that.

grep --help
...
  -A, --after-context=NUM   print NUM lines of trailing context

Therefore:

bpeek | grep -A 1 'nPDE'

Answered By - Erki Aring