sed or awk to print lines between words

Question

how to print all lines between "section B (" To the next "section" word that begin in line?

section A (

. .

)

section B (

. .

)

section C (

. .

)

Answer 1

sed -n '
  /^section B/!n;
  /^section B/d;
  /^)/q;
  p
' yourfile

Explanation of the above sed script, in steps:

1. While the line does not ! start with section B move to the next line.
2. After the we reached the desired line remove the section B text line.
3. In case the line starts with ) we quit.
4. Else we print the currently processed line.