Delete line that matches pattern and all subsequent lines until second pattern

Question

I'm trying to use sed to delete line that matches specific pattern and all the subsequent lines until another pattern is found.

For example:

This is a line I want to delete, this is second line that should be deleted. And this is stop-pattern which should terminate deletion.

I want to delete the whole above paragraph giving sed two patterns /delete,/ (which is the starting pattern and whole line containing that pattern should be deleted) and /deletion./ (which is the pattern which determines the point where to stop deleting).

How do I write sed command which can accomplish that?

Wiktor Stribiżew · Accepted Answer · 2018-10-03 09:20:18Z

You may use

sed '/delete,/,/deletion\./d' file > outfile

Here,

/delete,/,/deletion\./ tells sed to match a portion of text between (and including) the lines, starting with one contraining delete, and ending with the line having deletion. (note . must be escaped to match a literal dot)
d tells sed to remove that block of lines.

See an online sed demo.

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