You may do this using you favorite text editor or by using the command line.
# Root CA Certificate - AddTrustExternalCARoot.crt
# Intermediate CA Certificate 1 - UTNAddTrustSGCCA.crt
# Intermediate CA Certificate 2 - ComodoUTNSGCCA.crt
# Intermediate CA Certificate 3 - EssentialSSLCA_2.crt
# Your SSL Certificate - yourDomain.crt Note: You will not need your SSL certificate for this exercise.
GUI Text Editor
Linux or UNIX-like Operating Systems:
-- cat EssentialSSLCA_2.crt ComodoUTNSGCCA.crt UTNAddTrustSGCCA.crt AddTrustExternalCARoot.crt > yourDomain.ca-bundle
Windows or DOS:
-- copy EssentialSSLCA_2.crt + ComodoUTNSGCCA.crt + UTNAddTrustSGCCA.crt + AddTrustExternalCARoot.crt yourDomain.ca-bundle
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