Skills you'll gain: Operating Systems, C (Programming Language), Performance Tuning, Virtual Machines, System Programming, Virtualization, Linux
Advanced · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: File Systems, Endpoint Security, Linux, Operating System Administration, Microsoft Windows, Windows PowerShell, Linux Administration, Windows Servers, Operating Systems, Linux Commands, Network Administration, Active Directory, System Monitoring, System Configuration, Network Security, Security Controls, Command-Line Interface, Malware Protection, Service Management
Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Firewall, Network Security, Intrusion Detection and Prevention, Information Systems Security, Security Controls, Network Monitoring, Threat Detection, Linux Administration, Linux
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Linux Commands, Linux, Unix Commands, Command-Line Interface, File Management, System Configuration, Linux Administration, Package and Software Management, DevOps
Beginner · Guided Project · Less Than 2 Hours
Skills you'll gain: File Systems, Operating Systems, Data Integrity, Debugging, Systems Design, Distributed Computing, Data Storage, C (Programming Language), System Programming, Computer Systems, Command-Line Interface, Data Security, Computer Hardware, Scalability, Version Control
Intermediate · Course · 1 - 3 Months

Skills you'll gain: System Monitoring, Shell Script, Bash (Scripting Language), Unix Shell, User Accounts, Linux Commands, Network Monitoring, Linux, Systems Administration, Linux Administration, Operating System Administration, Unix, Ubuntu, Unix Commands, Network Troubleshooting, System Configuration, File Management, File Systems, Command-Line Interface, Red Hat Enterprise Linux
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Incident Response, Data Centers, DevSecOps, System Monitoring, Threat Detection, Microsoft Servers, Security Management, Payment Card Industry (PCI) Data Security Standards, Information Systems Security, Windows Servers, IT Infrastructure, Security Information and Event Management (SIEM), Security Testing, Disaster Recovery, IT Automation, Virtual Machines, Configuration Management
Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Computer Security Awareness Training, Cybersecurity, Risk Management, Enterprise Security, Cyber Security Assessment, Vulnerability Assessments, Encryption, Data Security, Information Assurance, Authentications, Network Protocols
Build toward a degree
Beginner · Course · 1 - 3 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Operating Systems, OS Process Management, System Programming, File Systems, Unix Commands, Command-Line Interface, System Monitoring, System Design and Implementation, Performance Tuning, Package and Software Management, File Management, Algorithms, Cloud Platforms, Security Controls, User Accounts, Debugging
Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Cybersecurity, Malware Protection, Cyber Attacks, Network Security, Information Systems Security, Intrusion Detection and Prevention, Security Testing, Penetration Testing, Firewall, Threat Detection, Internet Of Things, Exploitation techniques, Network Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Commands, Command-Line Interface, Linux, Linux Servers, Unix, File Systems, File Management
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Linux Administration, Docker (Software), Containerization, Linux, Network Troubleshooting, Linux Servers, Ansible, Kubernetes, Authentications, Infrastructure as Code (IaC), Network Administration, System Configuration, Remote Access Systems, Multi-Factor Authentication, Network Protocols, Network Security, Security Controls, Firewall, Web Servers, Encryption
Advanced · Course · 1 - 4 Weeks