You can display the contents of a PEM formatted certificate under Linux, using openssl:
# openssl x509 -in acs.qacafe.com.pem -text
The output of the above command should look something like this:
cdrouter@linux:/usr/share/doc/cdrouter> openssl x509 -in acs.qacafe.com.pem -text Certificate: Data: Version: 3 (0x2) Serial Number: 73:10:d8:99:cd:08:43:56:57:e0:56:17:84:87:8e:e3 Signature Algorithm: sha1WithRSAEncryption Issuer: C=US, O=RSA Data Security, Inc., OU=Secure Server Certification Authority Validity Not Before: Jun 9 00:00:00 2006 GMT Not After : Jun 9 23:59:59 2007 GMT Subject: C=US, ST=New Hampshire, L=Portsmouth, O=QA Cafe, OU=CDRouter, OU=Terms of use at www.
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