Tcpdump is a powerful command-line packet analyzer tool used to capture and analyze network traffic in real-time. It is an essential tool for network administrators, security professionals, and developers who…
How to Install and Configure yum-priorities on RHEL 6/CentOS 6
In this post, i will show on how to install and configure yum-priorities on CentOS 6 or RHEL 6 Linux server. Theoretically, the repositories with the lowest numerical priority number…
How to Create and Extract a gzip Compressed Archive File on Linux
Archiving and compressing files are useful when creating backups and transferring data across a network. One of the oldest and most common commands for creating and working with the backup…
How to use Basic Regular Expression with grep command on Linux
In Linux, regular expressions are a powerful tool for searching and matching patterns within text. One of the most common applications of regular expressions is in conjunction with the grep…
How to Open a File in Read-Only Mode on Linux
In Linux, opening a file in read-only mode can be useful to prevent accidental modifications to the file contents. Read-only mode allows you to view the contents of the file,…
How Display Logged in User Information and Terminal number on Linux Server
In this post i will show on how to display logged in user information and terminal number on Linux server. This post provides practical examples for future references. This steps…
In web server administration, encountering errors is a common occurrence. One such error that Zimbra users often face is the “cannot restore segment prot after reloc: Permission denied” error. This…
How to Add Persistent Static Routes on RHEL 6/CentOS 6
This example will show you on how to configure the Persistent static route in RedHat Enterprise Linux 6 (RHEL 6) server. This configuration may different with other version of RHEL…
How to Install nmap on RHEL 6 Linux Server
Nmap, short for Network Mapper, is a free and open-source tool that is indispensable for network exploration or security auditing. It is a powerful utility that can help you discover…
How to Install and Configure Bind Chroot DNS Server on RHEL 6
In this post, i will guide you on how to install and configure Bind Chroot DNS server on Redhat Enterprise Linux 6 (RHEL 6). DNS is the Domain Name System…
How to Create Additional LVM on RHEL 6/CentOS 6
Most of the linux administrator facing run out of disk space to store data and sometimes there is another request for them to create additional logical volume manager(LVM) for new…
How to Add a New Hard Disk Without Rebooting VM Guest on RHEL 6/CentOS 6
In web server administration, there are instances where you might need to increase the storage capacity of your Linux RHEL 6 server. This could be due to a variety of…