Red Hat Enterprise Linux System Admin I (GL124)

Course Duration

5 Days

Audience

Employees of federal, state and local governments; and businesses working with the government.

Prerequisites

No prior Linux experience required. Basic familiarity with computing concepts and comfort working in a text-based interface is helpful.

Course Description

Master the foundational skills required to operate and manage Red Hat Enterprise Linux 10 systems. Aligned with the first half of the RHCSA (EX200) certification objectives, this course builds practical Linux administration competency through structured instruction and dozens of hands-on lab exercises on live RHEL 10 systems. The curriculum progresses from command line proficiency through full system management. Students begin with Bash shell navigation, file operations, and Vim editing, then advance to I/O redirection, piping, and text processing with grep, sed, and awk. The second half covers essential administration topics: local user and group management, file permissions and ownership, process monitoring and control, systemd service administration, OpenSSH configuration with key-based authentication, log analysis with rsyslog and journald, network configuration with NetworkManager and nmcli, file archiving and transfer, RPM and DNF package management, and disk partitioning with filesystem creation. Like all Guru Labs courses, the material is designed to provide extensive hands-on experience, and this course prepares students for Red Hat Enterprise Linux System Admin II to complete full RHCSA certification preparation.

Learning Objectives

• Navigate the Linux command line using Bash shell features including history, tab completion, and environment variables.
• Manage files and directories using core utilities such as cp, mv, rm, mkdir, ln, and file globbing.
• Edit text files efficiently using the Vim editor in command, insert, and ex modes.
• Redirect and pipe I/O streams, and process text with grep, sed, awk, sort, cut, and other filtering utilities.
• Create and manage local user accounts, groups, and password policies using useradd, usermod, and chage.
• Control access to files using standard Linux permissions, special permission bits, and umask.
• Monitor and manage processes using ps, top, kill, jobs, nice, and process priority tools.
• Control systemd services and daemons using systemctl to start, stop, enable, and mask units.
• Configure and secure OpenSSH for remote access using key-based authentication and sshd configuration.
• Analyze system logs using rsyslog configuration and journalctl queries filtered by unit, priority, and time.
• Configure network interfaces, IP addressing, and DNS resolution using nmcli and NetworkManager.
• Install, update, and manage software packages and repositories using RPM and DNF.

Course Outline

• Access the command line
• Manage files from the command line
• Get help in a textual environment
• Editing text files with Vim
• Text processing with grep, sed, and awk
• Manage local Linux users and groups
• Control access to files with Linux file system permissions
• Monitor and manage Linux processes
• Control services and daemons with systemd
• Configure and secure the OpenSSH service
• Analyzing and storing logs with rsyslog and journald
• Manage Red Hat Enterprise Linux networking
• Archive and copy files between systems
• Install and update software packages with RPM and DNF
• Comprehensive review

Frequently Asked Questions