LICM case studies
LICM · Put your knowledge to work in context.
The LPI Linux Essentials Certificate (exam code 010) is an entry-level credential from the Linux Professional Institute that establishes that you understand what Linux is, where it fits in the wider open source world, and how to work productively on a Linux system from the command line. It is aimed at people who are new to Linux or who use it incidentally - students, help-desk and junior operations staff, developers moving onto Linux hosts, and career-changers building a foundation before tackling a heavier administration certification. The LICM case studies are 5 cases and about 3,699 words.
1Licensing a Nonprofit's First Open Source Release
You volunteer with a 12-person nonprofit that runs a free tutoring program. Their IT coordinator wrote a 900-line Python script that imports student attendance from CSV files into their database.
599 words, about 3 min2Finding an Unknown Configuration File Under Time Pressure
It is your first week as a junior Linux administrator at a small ISP. The senior admin is on leave and left you a Debian 12 server running an internal monitoring stack.
763 words, about 4 min3Top Talkers from a Rotated Apache Log
An e-commerce team has a single Apache web server. The access log is in combined format, one request per line; the client IP is the first field and the timestamp is the fourth bracket-delimited field, for example 203.0.113.45 - - [12/Oct/2024:14:07:33 +0000] "GET /cart HTTP/1.1" 200 5123 .
728 words, about 4 min4Backup Service, Full Disk, and an Unwanted Desktop
You support a 15-person design studio. Their file server is an Ubuntu Server 22.04 LTS machine with 8 GB RAM and a single 500 GB disk; it runs Samba for shared folders and a nightly backup script.
790 words, about 4 min5Shared Design Folder, Umask, and a Read-Only Contractor
A five-person graphic design team shares a Linux file server. All designers are members of the design group; the shared folder is /srv/design , owned by root:design with mode 2775 , and it has worked for months.
819 words, about 4 min