RHCSA & RHCE Red Hat Enterprise Linux 7 Training and Exam Preparation Guide (EX200 and EX300), Third Edition

system unit files that are distributed with installed packages and located in the /usr/lib/systemd/system directory, and user unit files that are generated by users and stored in the /etc/systemd/user directory. This information can be vetted with the pkg-config command:
# pkg-config systemd --variable=systemdsystemunitdir

System logging (syslog for short) is an essential and one of the most basic elements of an operating system

The /boot file system is created at system installation and its purpose is to store kernel and associated files.

agnose and address routine SELinux policy violations (chapter 11)

RHCE™ Specific Skills:

System Configuration and Man