#!/bin/bash
cat /Users/jwand/Documents/work.ics | sed /^X-LOTUS.*/d | sed '
/^END:VCALENDAR$/ {
N
	/END:VCALENDAR.*BEGIN:VCALENDAR/ {
		/END:VCALENDAR.*BEGIN:VCALENDAR/D
		P
		D
	}
} '  > /Users/jwand/Documents/work2.ics


## input:

BEGIN:VCALENDAR

# some stuff

END:VCALENDAR
BEGIN:VCALENDAR

# more stuff

END:VCALENDAR


## goal

to get rid of all the instances of:

END:VCALENDAR
BEGIN:VCALENDAR

in the middle of the file, without touching the ones at the very start or end