Sorry,  I think I found it - yum list installed mod_ssl ....   ------------------------ Keith Smith On Monday, March 17, 2014 8:43 PM, keith smith wrote: Hi I'm looking into how to create a self-signed SSL on CentOS 6.x and the reference I am looking at says I should issue the command :   yum install mod_ssl  . I assume mod_ssl would have been installed with Apache.  So I would like to check that.  I looked at the man page for yum and it seems there is no way to check if it is installed. How can I check to see if a package or module has been installed? Thanks!! Keith   --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org To subscribe, unsubscribe, or to change your mail settings: http://lists.phxlinux.org/mailman/listinfo/plug-discuss