How to Install Ubuntu via PXE Server Using Local DVD Sources
PXE or Preboot eXecution Environment is a server-client mechanism which instructs a client machine to boot form network. In this
How to Query Audit Logs Using ‘ausearch’ Tool on CentOS/RHEL
In our last article, we have explained how to audit RHEL or CentOS system using auditd utility. The audit system
Learn Linux System Auditing with Auditd Tool on CentOS/RHEL
System auditing simply refers to in-depth analysis of a specific targeted system: an audit is made up of an examination
How to Rescue, Repair and Reinstall GRUB Boot Loader in Ubuntu
This tutorial will guide you on how to rescue, repair or reinstall a damaged Ubuntu machine which cannot be booted
Impress Your Friends with This Fake Hollywood Hacker Terminal
In Hollywood movies, hacking always seems interesting, especially because the whole action is spiced up with fancy desktop environments/backgrounds, rapidly
Rename All Files and Directory Names to Lowercase in Linux
In our previous article, we have described how to count the number of files and subdirectories inside a given directory.
How to Secure Nginx with SSL and Let’s Encrypt in FreeBSD
In this guide we’ll discuss how to secure Nginx web server in FreeBSD with TLS/SSL certificates offered for by Let’s
How to Setup Rsyslog Client to Send Logs to Rsyslog Server in CentOS 7
Log management is one of the most critical component in a network infrastructure. Logs messages are constantly generated by numerous
30 Useful ‘ps Command’ Examples for Linux Process Monitoring
ps (processes status) is a native Unix/Linux utility for viewing information concerning a selection of running processes on a system:
How to Block or Disable Normal User Logins in Linux
As a system administrator, you will inevitably perform scheduled system maintenances at some point or another. A few times, your
23 Useful PKG Command Examples to Manage Packages in FreeBSD
In this tutorial we’ll explain how to manage pre-compiled binary package applications in FreeBSD with the help of the package
How to Delete Old Unused Kernels in Debian and Ubuntu
In our last article, we’ve explained how to delete old unused kernels in CentOS/RHEL/Fedora. In this article, we will explain