Category: Linux

Journalctl command to verify logs in RedHat Enterprise Linux 7 0

Journalctl command to verify logs in RedHat Enterprise Linux 7

In this tutorial let us see how to use the journalctl command to verify logging information. To list end of journal log and follow mode (f) same like tail...

Linux System Administrator’s Guide for Centos 7, Red Hat 7 and Oracle Linux 7 0

Linux System Administrator’s Guide for Centos 7, Red Hat 7 and Oracle Linux 7

Linux System Administrator’s Guide for Centos 7, Red Hat 7 and Oracle Linux 7 This System administration guide will start from a server build from scratch to Pro...

How to compile and install OpenvSwitch in Linux 0

How to compile and install OpenvSwitch in Linux

Open vSwitch is a multilayer virtual switch licensed under the open source. Which has the level of production level quality with VLAN, traffic shaping etc. Open VSwitch come...

Creating swap space using a file in Linux 0

Creating swap space using a file in Linux

If we don’t have any additional disks, you can create a file somewhere on our filesystem, and use that file for swap space. The following dd command example...

Setup email notification for SUDO users access 0

Setup email notification for SUDO users access

Set up email notification for any users whenever they try to access Sudo privileges. By adding few configuration changes in Sudo entry we can get notified through email....

Enable setup command in minimal installed Redhat or Centos 6 Linux 0

Enable setup command in minimal installed Redhat or Centos 6 Linux

In minimum install setup, the command will not be enabled because it installed with limited packages. When we try to run “setup” command if we get below command...

Install and configure VNC server in Centos, Redhat & Oracle Linux 0

Install and configure VNC server in Centos, Redhat & Oracle Linux

o access any remote desktop servers we can use VNC. By installing and configuring VNC we can access graphical interface of any VPS servers are cloud servers. In...