Linux certifications test your ability to deploy and configure Linux systems in a business environment. These certifications range from vendor-specific certifications to distributor-neutral certifications. Several certification providers offer specialization paths to help candidates acquire specific skills that are relevant to their job responsibilities.
       IT professionals use certification to enhance their resumes, demonstrate knowledge, and expand their experience. Certification and training are also a shortcut for those starting their careers in IT. System administrators familiar with other operating systems may also want to expand their knowledge by learning Linux.
       CompTIA’s newest Linux+ certification is a vendor-neutral approach to learning Linux. It covers how to use the command line, manage storage, use applications, install them, and network. Linux+ also extends these skills with containers, SELinux security, and GitOps. This certification is valid for three years.
       RHCSA certification is often the first goal for Red Hat certification for Red Hat Enterprise Linux administrators. It covers basic maintenance, installation, configuration, and networking. This certification provides hands-on experience with the command line.
       Red Hat Certification exams are entirely hands-on. The exam provides one or more virtual machines to complete a series of tasks. Formulate the tasks correctly to successfully pass the exam.
       RHCE builds on the objectives of RHCSA and covers topics such as users and groups, storage management, and security. The most important subject for RHCE candidates is automation, of which Ansible is of particular importance.
       This certification exam is task-based and uses a series of requirements and virtual machines to test your abilities.
       Candidates for the RHCA certification must pass five Red Hat exams. Red Hat provides an extensive list of current certifications to help administrators flexibly match their knowledge with job skills. The RHCA exam focuses on two areas: infrastructure and enterprise applications.
       The Linux Foundation offers a range of distribution-neutral certifications that meet the needs of both general Linux experts and those who require more specialized skills. The Linux Foundation has retired the Linux Foundation Certified Engineer certification in favor of a topic that is more relevant to job responsibilities.
       LFCS is the foundation’s flagship certification and serves as a stepping stone to exams in more specialized subjects. It covers the fundamentals of deployment, networking, storage, core commands, and user management. The Linux Foundation also offers other specialized certifications, such as Container Management and Cloud Management with Kubernetes.
       The Linux Professional Institute (LPI) offers a distribution-neutral certification that focuses on day-to-day administration tasks. LPI offers a wide range of certification options, but the most popular remains the General System Administrator exam.
       The LPIC-1 exam tests your skills in systems maintenance, architecture, file security, system security, and networking. This certification is a stepping stone to more advanced LPI exams. It is valid for five years.
       LPIC-2 builds on the LPIC-1 skills and adds advanced topics on networking, system configuration, and deployment. Unlike other certifications, it includes information on data center management and automation. To obtain this certification, you must have an LPIC-1 certification. LPI recognizes this certification for five years.
       LPI offers four specializations at the LPIC-3 certification level. This level is designed for enterprise-level Linux administration and is suitable for specific job roles. Successful completion of any of the exams leads to the corresponding LPIC-3 certification. These specializations include:
       Unlike LPIC-1 and LPIC-2, LPIC-3 only requires one exam per specialization. However, you must have both LPIC-1 and LPIC-2 certifications.
       Oracle Linux distributions are updated versions of Red Hat Linux that include new utilities and applications. This certification is designed to validate an administrator’s skills in deploying, maintaining, and monitoring systems. It serves as a foundation for more advanced Oracle Linux certifications that cover topics ranging from cloud management to middleware.
       SUSE Linux Enterprise Server (SLES) 15 users can begin their journey to certification with the SCA exam. Exam objectives cover the core topics a SLES administrator should know, including file system management, command-line tasks, Vim usage, software, networking, storage, and monitoring. This certification has no prerequisites and is intended for new SUSE administrators.
       SCE has similar skills to SCA. SCE provides advanced management capabilities, including scripting, encryption, storage, networking, and configuration management. The certification is based on Linux Enterprise Server 15 from SUSE.
       To choose the certification that’s right for you, consider the Linux distribution used by your current employer and find exam paths that match. These exams may include Red Hat, SUSE, or Oracle certifications. If your organization uses multiple distributions, consider vendor-neutral options like CompTIA, LPI, or the Linux Foundation.
       It might be interesting to combine some distribution-neutral certifications with some vendor-specific certifications. For example, adding the CompTIA Linux+ certification to your Red Hat CSA knowledge base will help you better understand the benefits that other distributions can bring to your Red Hat environment.
       Choose a certification that is appropriate for your current or future role. It is highly recommended that you consider advanced certifications from Red Hat, LPI, and other organizations that focus on specific industry areas, such as cloud computing, containerization, or configuration management.
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