Linux RedHat



Understand and use essential tools

●Access a shell prompt and issue commands with correct syntax

●Use input-output redirection (>, >>, |, 2>, etc.)

●Use grep and regular expressions to analyze text

●Access remote systems using ssh

●Log in and switch users in multiuser targets

●Archive, compress, unpack, and uncompress files using tar, star, gzip, and bzip2

●Create and edit text files

●Create, delete, copy, and move files and directories

●Create hard and soft links

●List, set, and change standard ugo/rwx permissions

●Locate, read, and use system documentation including man, info, and files in /usr/share/doc

Note: Red Hat may use applications during the exam that are not included in Red Hat Enterprise Linux for the purpose of evaluating candidate's abilities to meet this objective.

Operate running systems

●Boot, reboot, and shut down a system normally

●Boot systems into different targets manually

●Interrupt the boot process in order to gain access to a system

●Identify CPU/memory intensive processes, adjust process priority with renice, and kill processes

●Locate and interpret system log files and journals

●Access a virtual machine's console

●Start and stop virtual machines

●Start, stop, and check the status of network services

●Securely transfer files between systems

Configure local storage

●List, create, delete partitions on MBR and GPT disks

●Create and remove physical volumes, assign physical volumes to volume groups, and create and delete logical volumes

●Configure systems to mount file systems at boot by Universally Unique ID (UUID) or label

●Add new partitions and logical volumes, and swap to a system non-destructively

Create and configure file systems

●Create, mount, unmount, and use vfat, ext4, and xfs file systems

●Mount and unmount CIFS and NFS network file systems

●Extend existing logical volumes

●Create and configure set-GID directories for collaboration

●Create and manage Access Control Lists (ACLs)

●Diagnose and correct file permission problems

Deploy, configure, and maintain systems

●Configure networking and hostname resolution statically or dynamically

●Schedule tasks using at and cron

●Start and stop services and configure services to start automatically at boot

●Configure systems to boot into a specific target automatically

●Install Red Hat Enterprise Linux automatically using Kickstart

●Configure a physical machine to host virtual guests

●Install Red Hat Enterprise Linux systems as virtual guests

●Configure systems to launch virtual machines at boot

●Configure network services to start automatically at boot

●Configure a system to use time services

●Install and update software packages from Red Hat Network, a remote repository, or from the local file system

●Update the kernel package appropriately to ensure a bootable system

●Modify the system bootloader

Manage users and groups

●Create, delete, and modify local user accounts

●Change passwords and adjust password aging for local user accounts

●Create, delete, and modify local groups and group memberships

●Configure a system to use an existing authentication service for user and group information

Manage security

●Configure firewall settings using firewall-config, firewall-cmd, or iptables

●Configure key-based authentication for SSH

●Set enforcing and permissive modes for SELinux

●List and identify SELinux file and process context

●Restore default file contexts

●Use boolean settings to modify system SELinux settings

●Diagnose and address routine SELinux policy violations





System configuration and management

●Use network teaming or bonding to configure aggregated network links between two Red Hat Enterprise Linux systems

●Configure IPv6 addresses and perform basic IPv6 troubleshooting

●Route IP traffic and create static routes

●Use firewalld and associated mechanisms such as rich rules, zones and custom rules, to implement packet filtering and configure network address translation (NAT)

●Configure a system to authenticate using Kerberos

●Configure a system as either an iSCSI target or initiator that persistently mounts an iSCSI target

●Produce and deliver reports on system utilization (processor, memory, disk, and network)

●Use shell scripting to automate system maintenance tasks

Network services

Network services are an important subset of the exam objectives. RHCE candidates should be capable of meeting the following objectives for each of the network services listed below:

●Install the packages needed to provide the service

●Configure SELinux to support the service

●Use SELinux port labeling to allow services to use non-standard ports

●Configure the service to start when the system is booted

●Configure the service for basic operation

●Configure host-based and user-based security for the service



●Configure a virtual host        

●Configure access restrictions on directories

●Deploy a basic CGI application

●Configure group-managed content

●Configure TLS security




●Configure a caching-only name server

●Troubleshoot DNS client issues



●Provide network shares to specific clients

●Provide network shares suitable for group collaboration

●Use Kerberos to control access to NFS network shares



●Provide network shares to specific clients

●Provide network shares suitable for group collaboration



●Configure a system to forward all email to a central mail server



●Configure key-based authentication

●Configure additional options described in documentation



●Synchronize time using other NTP peers

Database services


●Install and configure MariaDB

●Backup and restore a database

●Create a simple database schema

●Perform simple SQL queries against a database


Bash Files - .bash_profile .bashrc
Displaying Environment Variables in a Script
Using Variables on the Command Line
Setting and Using Variables in Scripts
Comment Types and Structure
Exit Status
Arithmetic Operations
Global and Local Environment Variables
Special Characters - Quotes and Escapes
Exercise: Using Arrays
For Loop
Case Statement
While Loop
Until Loop