Skills you'll gain: Vulnerability Scanning, Vulnerability Assessments, Linux, Linux Administration, Network Security, Role-Based Access Control (RBAC), Linux Commands, User Accounts, Network Monitoring, System Monitoring, Network Administration, Hardening, Information Systems Security, Security Controls, Wireless Networks, Firewall, Penetration Testing, Cybersecurity, Containerization, File Management
Beginner · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Linux, Linux Administration, Operating System Administration, Linux Commands, User Accounts, Command-Line Interface, Systems Administration, Operating Systems, User Provisioning, Service Management, System Configuration, System Monitoring, Graphical Tools, File Management
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Virtual Private Networks (VPN), Linux Administration, Public Key Infrastructure, Linux, Intrusion Detection and Prevention, Firewall, Remote Access Systems, Authentications, Authorization (Computing), Network Security, Security Controls, Identity and Access Management, File Management, Systems Administration, Cybersecurity, Encryption, Information Technology, Disaster Recovery
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Package and Software Management, Linux Administration, Linux, System Monitoring, Linux Commands, Operating System Administration, File Systems, User Accounts, Command-Line Interface, Systems Administration, Data Storage, System Configuration, File Management, Data Storage Technologies, Network Monitoring, Network Administration, Software Installation, Network Troubleshooting
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Ubuntu, System Configuration
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Version Control, Git (Version Control System), Linux, Cloud Computing Architecture, DevOps, Virtualization, Cloud Computing, Linux Administration, Cloud Infrastructure, Containerization, Cloud Platforms, Infrastructure As A Service (IaaS), Software As A Service, Virtual Machines, Platform As A Service (PaaS)
Beginner · Course · 1 - 4 Weeks
Dartmouth College
Skills you'll gain: Command-Line Interface, C (Programming Language), Linux Commands, Linux, Embedded Systems, Embedded Software, Programming Principles, Computer Engineering, Linux Servers, File Systems, System Programming, Build Tools, Data Structures, Algorithms, Computer Architecture, Computer Programming, Software Documentation, Computer Science, Software Engineering, Debugging
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Linux Administration, File Systems, Linux, File Management, Firewall, Remote Access Systems, Linux Commands, Network Troubleshooting, Unix, Operating System Administration, Command-Line Interface, Unix Commands, System Support, Unix Shell, Data Storage, Virtual Machines, Scripting
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: File Systems, Linux Administration, Linux, Linux Commands, Operating System Administration, Software Installation, Data Storage, Data Management, Unix Commands, System Configuration, Software Architecture, Data Integrity, Data Migration, Hardware Architecture, System Monitoring
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Linux Servers, Red Hat Enterprise Linux, Linux, Operating System Administration, Linux Commands, Virtualization, Systems Administration, Virtualization and Virtual Machines, Virtual Machines, Cloud Computing, System Monitoring, Software Installation, System Configuration
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Linux, Package and Software Management, Linux Administration, Red Hat Enterprise Linux, Linux Commands, User Accounts, Operating System Administration, Linux Servers, OS Process Management, Command-Line Interface, File Management, Unix Shell, System Monitoring, General Networking, Firewall, Open Source Technology
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Agile Methodology, Scrum (Software Development), System Programming, Embedded Software, Software Testing, Embedded Systems, Linux, Agile Software Development, Docker (Software), Git (Version Control System), Linux Commands, Linux Administration, Operating Systems, Shell Script, C++ (Programming Language), Debugging, File Systems, Internet Of Things, OS Process Management, Peripheral Devices
Intermediate · Specialization · 1 - 3 Months