Tag: sysadmin
All the articles with the tag "sysadmin".
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Switch Ubuntu to Hardware Enablement (HWE)
The Ubuntu HWE kernel brings newer hardware support to LTS releases — how to switch from generic to HWE and what you gain.
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Essential Linux Commands for Daily Use
The Linux commands every sysadmin reaches for daily — file ops, process management, networking, and text manipulation you can't live without.
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Ubuntu Debian packages have been kept back error
Packages have been kept back during apt upgrade — what it means, why it happens, and how to safely install or hold those packages.
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Update a Single Package Using APT
Update just one package with apt without upgrading everything else — the right flags, version pinning, and held package gotchas.
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Mastering xargs in Linux
xargs turns stdin into arguments — build complex pipelines, run parallel jobs, and handle filenames with spaces without breaking everything.
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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.
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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.
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User and Group Management in Linux
Create, modify, and delete users and groups on Linux — useradd, usermod, groupadd, sudo access, and /etc/passwd explained.
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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.
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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.
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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.
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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.