Skills you'll gain: OS Process Management, Operating Systems, C (Programming Language), System Programming, Virtualization, Virtual Machines, Application Programming Interface (API)
Intermediate · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Key Management, Data Security, Cryptography, Encryption, Cybersecurity, Network Security, Security Information and Event Management (SIEM), Network Monitoring, Network Analysis, Intrusion Detection and Prevention, Event Monitoring, Continuous Monitoring, Threat Detection, Incident Response
Mixed · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Network Security, Distributed Denial-Of-Service (DDoS) Attacks, Malware Protection, Network Monitoring, Network Administration, TCP/IP, Network Infrastructure, Infrastructure Security, Intrusion Detection and Prevention, Network Protocols, Load Balancing, Firewall, Vulnerability Assessments, General Networking, Authorization (Computing), Web Applications, Authentications
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Bash (Scripting Language), Shell Script, Linux Commands, Command-Line Interface, Linux, Scripting
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Linux Administration, Linux, System Configuration, Operating System Administration, Systems Administration, File Systems, IT Management, Virtualization, File Management, Virtual Machines, Information Technology, Data Storage Technologies, Technical Communication
Advanced · Course · 1 - 3 Months

Skills you'll gain: Linux, Linux Administration, Red Hat Enterprise Linux, File Systems, Linux Servers, Operating System Administration, Shell Script, System Configuration, Linux Commands, Web Servers, Servers, System Monitoring, Command-Line Interface, OS Process Management, Performance Tuning, Service Management, User Accounts
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Infrastructure, Virtualization, VMware ESX Servers, Virtual Machines, Infrastructure Architecture, Cloud Computing, Containerization, Data Centers
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: VMware ESX Servers, Virtual Machines, Performance Tuning, Virtualization, Servers, Capacity Management, System Monitoring, Data Migration
Intermediate · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Package and Software Management, Linux Administration, Linux, Linux Commands, Operating System Administration, OS Process Management, Systems Administration, Remote Access Systems, System Configuration, Network Administration, General Networking, Software Installation, Network Protocols
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: Unix Shell, Unix Commands, Shell Script, Bash (Scripting Language), Unix, Command-Line Interface, Linux Commands, Scripting, Linux, System Monitoring, File Management, System Programming, OS Process Management
Intermediate · Course · 1 - 4 Weeks

Akamai Technologies, Inc.
Skills you'll gain: Linux, Ubuntu, Linux Administration, File Systems, Linux Commands, Operating Systems, User Accounts, Red Hat Enterprise Linux, OS Process Management, File Management, Unix Shell, Unix Commands, System Configuration, Command-Line Interface, Open Source Technology, Role-Based Access Control (RBAC), Virtualization, Virtual Machines, Software Installation
Beginner · Course · 1 - 3 Months