splitcerts

#!/bin/awk -f

# This script expects a list of concatenated certificates on input and
# produces a collection of individual numbered files each containing
# a single certificate.

BEGIN {incert=0}

/-----BEGIN( TRUSTED)? CERTIFICATE-----/ {
	certno++
	certfile=sprintf("cert-%d.crt", certno)
	incert=1
}

/-----END( TRUSTED)? CERTIFICATE-----/ {
	print >> certfile
	incert=0
}

incert==1 { print >> certfile }