Deepak Prasad

In this tutorial, we covered all relational operators in Java. We learned in detail about the syntax and how we can use this operators with different data types and objects with example.

Install GCC on Rocky Linux with the Development Tools group, verify it with gcc --version, then compile and run a first C program to confirm the toolchain.

Multiple methods and commands to test port connectivity between Linux server and client with examples. Check availability of multiple ports in Linux for firewalls or network issues.

Step by Step instructions to install and setup Kali Linux on Raspberry Pi 2,3 and 4 with screenshots.

Step by Step instructions to install iredmail on rocky linux 8 with screenshots. Install and Configure iredmail server GUI

Add timestamp to SSHD DEBUG logs using while loop. Prepend timestamp to STDOUT and log file for DEBUG logs

Step by step instructions to install wireguard VPN on Rocky Linux. Configure network, firewall and test the VPN

Step by step instructions to install graylog on rocky Linux 8. Install and configure elasticsearch, mariadb, java and graylog server

In this tutorial, we will learn how to install MariaDB on Rocky Linux 8.4. You may also check the mariadb page link for the official instructions to install

Game development might sound as simple as creating a video game. But have you ever thought about what it looks like

Prevent ping flood attack in Linux using iptables and firewalld for both IPv4 and IPv6. Apply hash limit to ICMP Echo request to control ping flood in Linux and Unix servers.

Learn to implement password policy with complexity, old password reuse and more using pwquality.conf explained with examples in RHEL/CentOS 7 Linux

You can use the helm.sh/hook-weight annotation to hook resources that need to be created in a specific order. This weight can be any positive or negative integer number.

Examples and commands to show NFS shares on NFS server, List NFS mount points on NFS Clients, List NFS clients connected to the NFS server, List NFS shares in Linux

This tutorial contains a list of nfs exports options in Linux with examples to create NFS share using /etc/exports. You can share with multiple hosts, single or world

Kibana Tutorial to setup, install and configure Kibana dashboard with SSL/TLS encryption over HTTPS for elasticsearch cluster with examples in Linux.

Steps to install and configure logstash 7.x and send data from logstash to elasticsearch. Monitor the logs on Kibana dashboard using index pattern

Tutorial to install and configure metricbeat to monitor elasticsearch cluster in ELK Stack on RHEL/CentOS 7/8 Linux with examples over SSL/TLS (HTTPS)

Steps to overcome Device in bay #X power delayed until VC profile is applied issue on HPE Onboard Administrator and Virtual Connect

Steps to block and disable ICMP redirects for IPv4 and IPv6 in Linux using firewalld and accept_redirects. You can disable these if host is not running as a router.

How can I restrict my postfix smtp relay server to be used by only certain IP Address, How to block or allow postfix relay access using mynetworks example

How to reject mail for unknown users on localhost with Postfix with local_recipient_maps with example

Cleanup failed actions messages in pacemaker cluster. Cleanup failed resource actions and failed fencing actions in pcs status output or HA Cluster

Steps to repair filesystem in rescue mode in RHEL/CentOS 7/8 Linux. repair xfs filesystem with xfs_repair. repair ext4 filesystem with e2fsck

Step by step guide to disable and blacklist kernel module using GRUB2 and modprobe.d in Red Hat and CentOS 7 and 8 Linux. Permanently unload kernel module

Steps to install gnome desktop environment in RHEL CentOS 8 for workstation and server with gui. Enable and start GUI mode, command to switch GUI mode linux

Troubleshoot and fix LVM Error pvs couldnt find device with uuid and pvs shows unknown device Recover or Restore lost physical volume redhat linux