How to get which version of cron daemon is running

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http://unix.stackexchange.com – I am working on CentOS Details # cat /proc/version Linux version 2.6.18-308.4.1.el5PAE ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-52)) #1 SMP Tue Apr 17 17:47:38 EDT 2012 How can i know what version cron daemon installed and running on machine (HowTos)