Skills you'll gain: File Systems, Operating Systems, File Management, Computer Programming Tools, Data Integrity, Debugging, File I/O, Systems Design, Data Storage Technologies, System Software, Distributed Computing, Data Storage, C (Programming Language), System Programming, Computer Systems, Data Persistence, Command-Line Interface, Hardware Architecture, Peripheral Devices, Data Security
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Command-Line Interface, Network Security, Operating Systems, Information Technology Operations, Network Support, Mac OS, Security Controls, Microsoft Windows, Information Systems Security, System Configuration, Mobile Security, System Support, Linux, Network Troubleshooting, Technical Support, Software Installation, Help Desk Support, Firewall, Malware Protection, Encryption
Intermediate · Course · 1 - 3 Months

28DIGITAL
Skills you'll gain: Real-Time Operating Systems, Embedded Software, Embedded Systems, Internet Of Things, Operating Systems, System Programming, Application Development, Wireless Networks, Communication Systems, Hardware Architecture, OS Process Management, Network Protocols, C (Programming Language), Simulations, Computer Hardware, Network Performance Management, Memory Management
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Unit Testing, Software Development Life Cycle, Linux Commands, Software Architecture, Bash (Scripting Language), Shell Script, Git (Version Control System), GitHub, Full-Stack Web Development, Flask (Web Framework), Software Design, Version Control, File Management, Unix Shell, Linux, Application Deployment, Software Development Methodologies, Data Import/Export, Python Programming, NumPy
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Peripheral Devices, Network Troubleshooting, Desktop Support, Computer Displays, USB, Display Devices, TCP/IP, Virtual Local Area Network (VLAN), Operating System Administration, Hardware Troubleshooting, Mac OS, Microsoft Windows, General Networking, Technical Support and Services, Technical Support, Network Infrastructure, System Support, Local Area Networks, Network Protocols, Knowledge of Apple Software
Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: File Systems, Digital Forensics, Microsoft Windows, File Management, Operating Systems, Data Structures, Data Validation, File I/O, Data Storage
Intermediate · Course · 1 - 3 Months

Codio
Skills you'll gain: User Accounts, Unix Commands, Unix, Unix Shell, Command-Line Interface, User Provisioning, OS Process Management, File Systems, Linux, Ubuntu, Linux Commands, Operating Systems, Systems Administration, Operating System Administration, Authorization (Computing), Shell Script, File Management, Data Storage
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: OS Process Management, Operating Systems, System Programming, Performance Tuning, Data Structures, Event-Driven Programming, Data Access
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Networking Hardware, General Networking, Network Architecture, Wireless Networks, Network Protocols, Computer Networking, TCP/IP, Local Area Networks, Network Security, Network Troubleshooting, System Configuration, Wide Area Networks, Servers
Build toward a degree
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Virtualization, Cloud Computing, Virtualization and Virtual Machines, Virtual Machines, Cloud Services, Cloud Platforms, Display Devices, Computer Hardware, Operating Systems, Computer Displays, Containerization, Wireless Networks
Build toward a degree
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Extract, Transform, Load, Web Scraping, Database Design, SQL, IBM DB2, Database Management, Data Store, Data Architecture, Relational Databases, Database Systems, Apache Hadoop, Databases, Big Data, Unit Testing, Database Development, Data Storage, Apache Spark, Data Import/Export, Python Programming, NumPy
Beginner · Specialization · 3 - 6 Months