Deepak Prasad

Step by step guide to add linux to windows Domain (Active Directory) using Realm tool on RHEL/CentOS 7/8. Join linux to windows domain. sssd active directory centos 7.

how to configure sftp server in linux step by step to sftp restrict user to specific directory in Linux Setup sftp chroot jail with authorized_keys passwordless

Steps to run script with systemd at shutdown only with examples in CentOS/RHEL 7/8 in Linux. Run script or command before shutdown but not at reboot

How to execute command or run script after N minutes of boot using systemd timer in CentOS/RHEL 7/8 Linux fix systemctl failing with unknown section 'Timer'

Shell script to read user input during boot stage in Linux with a systemd service in CentOS/RHEL 7/8 Linux. Take input at the startup script in Linux.

How to execute and run script at startup after N minutes with delay using systemd and without cronjob in CentOS/RHEL 7/8 Linux before login prompt appears

Steps to execute and run script with systemd right before shutdown in CentOS/RHEL 7/8 Linux. Use Before=shutdown.target to execute command before shutdown

How to execute or run script with systemd right before login prompt in CentOS/RHEL 7/8 Linux between rc-local.service and getty.target in service unit file

In systemd all the services are part of unit files so to list services we must define --type= argument and to get the state of individual services we need --state=

An overview on systemd-journald service, how logging happens in RHEL 7 Linux with Journals and systemd-journald logrotate. Compare systemd-journald vs rsyslogd

Enable persistent logging in systemd-journald by changing storage type to persistent in journald.conf to store logs in /var/log/journal without reboot

Steps to automount file system using systemd automount unit file without /etc/fstab to automatically mount and unmount file system in rhel/centos 7 and 8

Creating /forcefsck and /fsckoptions doesn't work on CentOS/RHEL 7/8 Linux How to perform force file system check on boot (next reboot) using systemd-fsck?

How to execute a script after a network file system is mounted? How to start a systemd service only after NFS share is mounted and available in Linux

How to mount Oracle VirtualBox shared folder using systemd unit file at system startup? How to execute a script during reboot on the shared folder from Vbox using systemd?

Step by Step instructions to create systemd service in Linux. Detailed explanation of all the field in systemd service unit file

Steps to create root and intermediate CA certificate and combine them to openssl create certificate chain. Openssl verify certificate chain (CA bundle)

Step by step instruction to generate Certificate Signing Request (CSR) for Subject Alternative Name (SAN) certificates using openssl with examples in Linux

Resize primary partition shrink and extend non lvm root, boot and other primary partition, change size of partition using unallocated free space fdisk & parted

We recently upgraded our Base OS and there we starting facing this issue where all SSH connection via RSA Key started to fail with error "sshd: ssh-rsa

In this tutorial I am going to share step by step instructions to decrypt both HTTPS and LDAPS Traffic using WireShark. This tutorial is demonstrated using

The task is to count the number of friends each person has using a MapReduce framework. The input consists of multiple lines, each containing a pair of friend

Perform rootkit malware scanner centos rhel linux using rkhunter. detect rootkit malware using rkhunter with examples. Analyse rkhunter logs

Since its inception, cloud computing has significantly developed, offering unmatched IT security among many niches and industries. Unlike on-premise

In my earlier article I had explained about Kubernetes Resources and how to assign resource quota in a namespace. Now let's make things more interesting and

Artificial intelligence (AI) was once a sci-fi fantasy but is now an everyday reality, permeating every aspect of our lives. AI isn't only another tech

In this tutorial I will share the steps to create iSCSI target using Ubuntu 22.04 VM installed on Oracle VirtualBox.

Step by step instructions to uninstall docker in Ubuntu. Cleanup and Delete all docker resources safely and completely

In this tutorial, we'll learn how to shrink or reduce Git repo size using git filter-branch. We'll cover identifying large files, safely removing them, and cleaning up to maintain a more efficient and manageable …

Since you are here so I can only assume you are also interested in becoming cybersecurity penetration tester, also called an Ethical Hacker. This tutorial is