Tag: sysadmin

Update a Single Package Using APT

Update one package with apt without upgrading everything else — the exact flag, version pinning, held package handling, and the apt vs apt-get distinction that trips people up.

Mastering xargs in Linux

xargs turns stdin into arguments — build complex pipelines, run parallel jobs, and handle filenames with spaces without breaking everything.

LVM The Linux Sysadmin’s Guide to Flexible Storage

LVM lets you resize volumes, add disks, and take snapshots without repartitioning — PVs, VGs, and LVs explained with real commands.

Socat: The Swiss Army Knife of Networking

socat relays data between almost any two endpoints — TCP, UDP, Unix sockets, files, and serial ports. The netcat you didn't know you needed.

User and Group Management in Linux

Create, modify, and delete users and groups on Linux — useradd, usermod, groupadd, sudo access, and /etc/passwd explained.

Linux System Monitoring: Tools and Techniques

Monitor Linux servers with htop, iostat, netstat, vmstat, and Prometheus — pick the right tool for CPU, memory, disk, and network issues.

SumGuy’s Guide to Linux Log Analysis

journalctl, grep, awk, and tail -f — read your Linux logs like a pro and find the error before it pages you at 3 AM.

Set the Timezone in Ubuntu with timedatectl

Set, verify, and sync your timezone in Ubuntu using timedatectl — one command to fix the clock on a newly provisioned server.

Ubuntu & Bash tutorial & basic utilities

Essential bash utilities for Ubuntu newcomers — file management, text processing, process control, and the commands you'll type every day.

Linux distribution info & kernel info

Find your Linux distro version, kernel version, and architecture with uname, lsb_release, /etc/os-release, and hostnamectl.

linux shell argument list too long rsync or cp

Fix 'Argument list too long' errors in bash when cp or rsync chokes on thousands of files — xargs and find-based workarounds.

Repair & Optimize all Mysql Databases one liner

Repair and optimize all MySQL databases at once with mysqlcheck — a one-liner that runs on every table without logging into MySQL.