DESCRIPTIONThe nseq command takes a file containing a Netscape certificate
sequence and prints out the certificates contained in it or takes
a file of certificates and converts it into a Netscape certificate
sequence. COMMAND OPTIONS
-in filename This specifies the input filename to read or standard input
if this option is not specified.
-out filename specifies the output filename or standard output by default.
-toseq normally a Netscape certificate sequence will be input and
the output is the certificates contained in it. With the -toseq
option the situation is reversed: a Netscape certificate sequence
is created from a file of certificates.
EXAMPLESOutput the certificates in a Netscape certificate sequence
openssl nseq -in nseq.pem -out certs.pem
Create a Netscape certificate sequence
openssl nseq -in certs.pem -toseq -out nseq.pem
NOTESThe PEM encoded form uses the same headers and footers as
a certificate:
A Netscape certificate sequence is a Netscape specific form
that can be sent to browsers as an alternative to the standard PKCS#7
format when several certificates are sent to the browser: for example
during certificate enrollment. It is used by Netscape certificate
server for example. RestrictionsThis program needs a few more options: like allowing DER or
PEM input and output files and allowing multiple certificate files
to be used.
HP Open Source Security for OpenVMS Volume 2:... 
OpenSSL Command Line Interface (CLI) Reference
