How to Install and Configure Nginx on Linux
Step-by-step guide to install and configure Nginx on Linux: apt or yum install, enable and start service, create server blocks, set document root, adjust firewall, test and restart
Linux & System Administration
Managing SSH Configuration Files for Security
Hands editing an SSH config file on laptop, showing secure options: PermitRootLogin no, PubkeyAuthentication yes, strict file permissions, commented notes for audit and compliance.
How to Change the Hostname in Linux
Illustration showing steps to change a Linux hostname: edit /etc/hostname update /etc/hosts use hostnamectl set-hostname, reboot or restart network services to apply the new name.
Understanding Environment Variables in Linux
Linux environment variables illustrated terminal showing PATH and HOME, export commands; key=value pairs, scope across processes, persistence via .bashrc/.profile and system settings
How to View and Kill Background Processes
Image showing how to view and kill background processes: terminal with ps/top output and PIDs, a system monitor highlighting a PID, and using kill or kill -9 safely to terminate it.
Managing Network Interfaces with ifconfig and ip Commands
Illustration of Linux network interface management comparing ifconfig and ip commands: configuring interfaces, assigning IPs, bringing ifaces up/down, and viewing addresses/routes.
How to Configure Time Synchronization in Linux
Step-by-step Linux time sync: choose NTP or chrony, install and enable service, configure servers and firewall, verify drift and status, schedule updates, ensure secure, consistent
How to Enable and Disable SELinux in Red Hat Systems
Guide to enable or disable SELinux on Red Hat systems: check current mode with sestatus, edit /etc/selinux/config to set enforcing/permissive/disabled, reboot or use setenforce now
Using tar and gzip to Compress and Extract Files
Terminal showing commands and progress tar creating archive gzip compressing .tar to .tar.gz extracting files with tar -xzf arrows indicate packing and unpacking file list visible.
How to Check CPU Usage and Temperature
CPU monitoring dashboard showing usage graph, percentage, temperature readout, fan speed and thermal status; user views real-time stats in a system monitoring tool for diagnostics.
Managing Swap Space and Memory in Linux
Diagram of Linux memory and swap: RAM, swap partition/file, paging, swappiness, page cache, kernel swapping, monitoring tools (free, vmstat, top, swapon) and tuning tips quick guide
How to Automatically Mount Drives on Boot
Diagram showing steps to automatically mount drives at boot: identify device, create mount point, update /etc/fstab with UUID and options, test, and verify mounts on system startup