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Bash

.bashrc Bash Alias Bash History Screen Screen Example

Boot

Kernels Kernel Info Grub Boot Entries Auto Update Grub

Common Services

Hosting .htaccess PHP SSL SQL mysqldump SQL Repairs

Email

Email Overview Postfix Manaul Setup DNS for Email CLI Testing

Storage

LVM Basics Create an LVM Pool Add a Disk Expand an LVM Pool Reduce and LVM Pool SnapShots Thin Provisioning Moving an LVM Pool Disk Overview DD Utility Encryption RAID Serial Numbers smartctl Utility Mounting Checking Free Space

Data

chmod/chown find grep ln ls rsync scp sed tar less/more 7-Zip Zip

GUI

XRDP install guide

Networks

ifupdown NetPlan Networks in CentOS Ports IP Tool IP Routes iptables Speedtests Nameservers

Processes

Processes 1 Processes 2

Packages

Packages 1 Packages 2

Tasks

Tasks 1 Tasks 2

Services

Systemd Journalctl Journalctl Settings SysVInit

Users and Groups

Users and Groups Sudo GPG SSH SSH Config SSH Security

sed

sed

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SED usage
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sed -i 's/old/new/g' file.ext

/ seperators can be swapped with other characters like _