How to change a runlevel on RHEL 7 Linux system -

The conventional way used to change runlevel using /etc/inittab has become obsolete with Redhat Enterprise Linux version 7. As a result any Linux system using systemd system management daemon now relies on systemctl command to change runlevel or to be more precise to change the target. As a result any edits of /etc/inittab file will not take effect on RHEL 7.
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