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→INVESTIGATION 3: Using the Shell to Generate System Information Reports
{{Admon/important|Never disable SELinux in the real world| It is highly discouraged and unsafe to disable SELinux on a public-facing server. Some applications may require tedious steps to setup SELinux rules. Disabling SELinux is never the correct way to solve an issue.}}
SELinux stands for '''Security-Enhanced Linux'''. It is a component that helps to better secure the system to protect against intrusion (hackers). SELinux is enabled upon the default install of CentOS. SELinux can be a good thing, if you take care of it and know how it works. For this course it is strongly recommended that you '''turn off change SELinux to permissive mode by default''' because we won't have the time to reconfigure it every time the labs make it necessary.
:'''Perform the following Steps:'''
:You may have learned about creating and running Bash Shell Scripts in your ULI101 OSL640 course. Shell scripts help Linux users and system administrators to automate repetitive tasks to become more efficient and to help them save time. In order to avoid confusion with syntax, you will not be writing bash scripts in this course. You will however still run bash commands to perform various tasks, e.g. to generate information reports for your newly-installed Linux host machine.
