|-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.|
openssl nseq -in nseq.pem -out certs.pem
Create a Netscape certificate sequence
openssl nseq -in certs.pem -toseq -out nseq.pem
The 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.