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Thursday, May 02, 2013

HowTo: Know if you're using pure RedHat, CentOS or Oracle Enterprise Linux

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Scenario: You been given access to a server and you don’t know if it’s a pure RedHat, CentOS or Oracle Enterprise Linux server.

We all know how to query the version of the Linux OS using the following :

> uname -a

> cat /etc/redhat-release

But these don’t necessarily differentiate between a pure RedHat O/S and the downstream Linux distributions such as CentOS or Oracle Enterprise Linux.

As well as the above, you can query what’s been installed through RPM:

> rpm -qa | grep oraclelinux

> rpm -qa | grep centos

Any output in one or the other will confirm an OEL or CentOS distribution.

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