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OS / 시스템 가이드11
NFS · Filesystem Mounting — A Complete Guide to /etc/fstab
A practical guide to Linux filesystem mounting: NFS server and client setup, persistent mounts with /etc/fstab, UUID-based disk mounts, tmpfs, bind mounts, and more.
systemd timers — A complete guide to replacing cron
How to schedule recurring jobs with systemd timer units, configure failure notifications, logs, and delayed execution, plus the trade-offs versus cron.
Linux Extraction Commands: tar.gz, tar.zst, zst, zip, and 7z
A per-extension reference for extracting tar.gz, tar.zst, and standalone zst archives. Covers tar xzf options, keeping originals, missing or unsupported zstd errors, and how to choose a format.
Complete Environment Variable Guide — .bashrc · .zshrc · export · env
Covers setting, inspecting, and unsetting environment variables; making them persistent (.bashrc/.zshrc/.profile); passing variables to processes; and managing .env files.
Complete Process Management Guide — ps · kill · nice · htop
A practical rundown of Linux process management: inspecting processes with ps, sending signals with kill, adjusting priority with nice/renice, and using htop in real-world workflows.
Linux Kernel Parameter Tuning — sysctl · Network Stack · Memory Optimization
An in-depth guide to controlling the TCP stack, file descriptors, and memory management with sysctl, and applying optimal parameters for production workloads (high-traffic web servers, databases, and container hosts).
Memory and Swap Management — free, vmstat, Swap Configuration
A practical guide to checking server memory status, analyzing OOM causes, creating swap files, and tuning swappiness.
Mastering journalctl — Querying and Analyzing systemd Logs
A practical guide to querying, filtering, and analyzing system logs with journalctl, covering real-world scenarios.
Disk Management in Practice — lsblk, df, du, fdisk, LVM
A practical rundown of the core commands for server disk management, from checking capacity to creating partitions and extending LVM volumes.
Linux System Resource Monitoring
A practical roundup of commands and tools for real-time CPU, memory, disk, and network monitoring, and for finding bottlenecks.
Linux User and Group Management
Covers end-to-end server user administration, including creating and deleting users, managing groups, configuring sudo privileges, and applying password policies.