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Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.
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Don't let this gap widen
Without mastery of lsof, Linux system administrators miss 65% of open file-related incidents, from resource exhaustion to persistent process locks.
These failures trigger average downtime costs of $5,600 per minute, escalating to $300,000+ per major outage for mid-sized enterprises.
Unmanaged open files delay deployments by 48 hours on average, risking data corruption, compliance violations, and stalled revenue—threatening team performance and company competitiveness.
Every month without lsof proficiency, IT teams waste 20+ hours troubleshooting blindly, amplifying vulnerability to production failures.
The Training: Mastering lsof: Analysis and Management of Open Files on Linux training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.
The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.
To ensure the quality of the Training: Mastering lsof: Analysis and Management of Open Files on Linux training, Learni provides the following teaching resources:
For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.
The assessment of skills acquired during the Training: Mastering lsof: Analysis and Management of Open Files on Linux training is carried out through:
Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.
Learni training programs are available for inter-company and intra-company settings, both in-person and remote. Registration is possible up to 48 business hours before the start of training. Our programs are eligible for OPCO, Pôle emploi, and FNE-Formation funding. Contact us to discuss your training project and funding possibilities.
1. Introduction to lsof: origin, objectives, and use cases in system administration 2. Installation and first steps: getting started and main options 3. Understanding lsof output: PID, users, files, access types, and more 4. Targeted searches: filtering by process, user, file, or directory 5. Diagnosing locked files and deleted but still open files 6. Network analysis: identifying open ports, active connections, and used sockets 7. Security: identifying suspicious accesses and locking unauthorized uses 8. Automating with lsof: scripts for recurring monitoring, alerts, and log extraction 9. Practical exercises on real cases: resolving blocked sockets, recovering deleted files, and managing system audits 10. Q&A – summary of key takeaways and recommendations for further learning
Target audience
System administrators, IT technicians, developers, and anyone wishing to deepen the analysis of processes and open files on Linux
Prerequisites
Basic knowledge of the Linux environment (navigation, basic commands)
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