Linux, Windows, Security, Programming, Network Tutorials
Linux services and daemons can be controlled with chkconfig command. chkconfig command is mainly used to set given service or daemon run level. In order to work with chkconfig command we need root privileges. systemctl command suite provides more and detailed features. Related tutorial can be accessed from following link. Linux Systemctl Tutorial List All … Read more
Host name is used to identify the systems like hosts, clients, servers etc. Host name provides human readable easy names to remember. In a big environment host names will provides some easy of use. This tutorial is compatible with RHEL6, RHEL7, Fedora, CentOS 6 and CentOS 7 versions How Host Names Works In basic form … Read more
Ubuntu is popular Linux distributions used by millions. In order to access Ubuntu systems remotely we use ssh protocol. So in order to access and manage Ubuntu systems the ssh server should be installed and running without restriction like firewall. In this tutorial we will look how to install, start and troubleshoot SSH service in Ubuntu, … Read more
SQL is a very powerful language to query, insert, delete, modify data. In recent years the IT industry has developed some alternative ways to store and retrieve data. NoSQL type database servers become very popular. MongoDB is a NoSQL database server to store and retrieve data. In this tutorial, we will look at how to … Read more
Secure Shell or with its most know name SSH is a protocol developed to connect IT systems remotely and securely. SSH works as expected client-server architecture. In this post, we will look at various security-related configuration options of the SSH daemon service or sshd. The tutorial about the client-side ssh configuration can be found in the … Read more
Apache or Apache 2 is the most popular web server on the internet. We have set up our Apache server and made some configuration change we want to activate the changes. To active the changes, the Apache server must be restart. In this post, we will look at how to restart Apache in different ways … Read more
Run Level is a preset operating state in Linux systems. Different run levels have different behavior. How can we change these run levels easily? What are these run levels? Run Levels We will explain the run levels and their meanings in this section Run Level 0 is shutdown position. Linux system is powered off. Linux systems … Read more
Hi, today we will learn managing Linux services with systemd or systemctl. While Linux kernel booting, it loads drivers, mount file systems, starting memory management, creating system calls, etc. But after that what? Linux starts an init process to create a further system and user services and processes. To manage system services we need a … Read more
I have changed my network configuration and want to restart to make changes effective. Or there are some problems with my network and I think restarting it will solve my problems. Here we will look at how to restart networking service in various network distributions like Ubuntu, Debian, Fedora, CentOS. Get Status Of Network Service … Read more
Services are all over the Linux world. Enterprise Linux world turn over services. There are different tools to manage Linux services like Sys-V, upstart, systemd etc. Systemd is gaining popularity in recent times. Fedora, CentOs, RedHat uses systemd for a long time. Ubuntu started to use systemd too. Here we will look into basics of … Read more