Linux Fundamentals

Prezentarea cursului

This training presents fundamentals topics of Linux on RHEL 10 .
• Navigate, search, and manipulate files from CLI; use pipelines and redirection
• Manage users/groups, permissions, ACLs, and sudo
• Manage software with DNF + repositories 
• Control boot targets, services, processes, logs (systemd + journald)
• Configure storage 
• Configure basic networking, hostname/DNS, and SSH key auth
• Apply baseline security

Ce subiecte abordează cursul

Day 1 — Shell basics + the filesystem 

Module 1.  Linux Basics

• Bash Basics

• What Linux is, filesystem layout, FHS basics
• Getting help: man, info, /usr/share/doc, --help
• Text editors: vim 

Module 2. Essential command-line tools

• Paths, globbing, quoting, environment variables
• I/O redirection, pipes, command substitution
• Files and directories: create/copy/move/remove, links (hard vs symlink)
• Search & inspection: find, locate, grep, file, stat

Day 2 — Users and permissions

Module 3. Users & groups

• Create/modify/delete users and groups
• Password aging & account policies 
• Default file permissions, umask

Module 4. Permissions & access control

• Ownership, mode bits, special bits 
• ACL basics: getfacl/setfacl
• sudo fundamentals 

Day 3 — Operate running systems 

Module 6. Boot and system targets

• GRUB basics, selecting targets (multi-user vs graphical)
• Recovery basics 

Module 7. Processes & performance basics

• Inspect and manage processes: ps, top, pgrep, kill, priorities
• Resource visibility 

Module 8. systemd services + journald

• Unit concepts, enable/start/stop/status
• Logs: journalctl filtering, persistent logs concept
• Scheduled jobs: cron + systemd timers 

Day 4 — Storage + networking + software management 

Module 9. Local storage 

• Partitioning overview (MBR/GPT)
• Filesystems, labels/UUID, mounting, /etc/fstab
• Swap
• LVM: PV/VG/LV create/extend, resize filesystem safely

Module 10. Networking + remote access

• IP config concepts, verifying connectivity, routes
• Hostname/DNS basics
• SSH: host keys, client keys, key-based authentication

Day 5 

Module 5. Shell scripting fundamentals 

• Basics of scripting

Module 11. Software management

• DNF basics

Module 12. Baseline security

• Firewall fundamentals (zones/services/ports)
• SELinux basics: modes, contexts, troubleshooting mindset (intro)