Since RHEL 6, a transaction history has been added to the yum command. This feature allows you to precisely know which packages have been installed on a server and in which order. In addition, you can undo or redo any…

If you need to configure a server for a specific task (for SAP, with reduced network latency, for maximum throughput, as a desktop, as a virtual host, etc), a dedicated tool already existed in RHEL 6: tuned-adm. This tool still…