removing lines between two patterns (not inclusive) with sed

Question

Ok

I know that this is trivial question but: How can i remove lines from files that are between two known patterns/words:

pattern1
garba

Answer 1

You may also use the Unix text editor ed:

echo '
pattern1
garbage
pattern2
' > test.txt

cat <<-'EOF' | sed -e 's/^ *//' -e 's/ *$//' | ed -s test.txt &>/dev/null
  H
  /pattern1/+1,/pattern2/-1d
  wq
EOF

For more information see: Editing files with the ed text editor from scripts