Using system documentation resources

The system includes resources to help you while working with it and guide you to improve your sysadmin skills. This is referred to as the system documentation. Let’s check three different resources available by default in your RHEL installation: man pages, info pages, and other documents.

man pages

The most common resource used to obtain documentation is manual pages, also referred to by the command used to invocate them: man.

Almost any utility installed in the system has a man page to help you use it (in other words, specifying all the options for the tools and what they do). You can run man tar and check the output:

[root@rhel-instance ~]# man tar
TAR(1)                                    GNU TAR Manual        ...