In this post we will learn, how to print variable value inside single and double quotes. Today I was working on some bash scripting and got this requirement. The script is working wonderfully and as expecting output was also coming. Today we will share this basic bash scripting. Explaining step by step , which gives…
The tutorial will explain about how to change default ssh port number in OpenSSH Server on CentOS 7 and RHEL 7 . We will change the SSH default port no. 22 to our desired number and we will keep SELINUX enabled. We will also add new firewalld rule with respect to new ssh port number….
In this post we will learn, how to reset / recover forgotten root password on CentOS 7 / RHEL 7 (Red Hat Enterprise Linux 7). On RHEL 5/6 or CentOS 5/6 series , the method of resetting forgotten root password was same. In latest RHEL 7 / CentOS 7 this time we have found some difference in steps to reset the forgotten root password.
While creating first virtual machine in KVM on Ubuntu 14.04 got Error : Unable to complete install:’unsupported configuration hda-duplex not supported in this Qemu binary’. Note: It was my fresh installation of KVM on Ubuntu 14.04 LTS. Solution : Restart libvirt-bin. sudo stop libvirt-bin sudo start libvirt-bin Reopen the virt-manager. I hope the problem is…
KVM ( Kernel-based Virtual Machine ) is virtualisation software which is used for creating virtual machines on host system. In this post, we will share installation method of KVM on Ubuntu 14.04 LTS. We also include brief introduction of problem we have faced during installation and its solution we will also share. We recommend you…
In this tutorial we will learn, how to install and setup samba server ( file sharing server ) on CentOS 7 and RHEL 7 (Red Hat Enterprise Linux 7) . Samba server is popularly use for file and printer server and now a days it is also used as domain controller in network (like Windows…
While setting up the Samba Server on CentOS 7, I met with this message on termial that is ” -bash: smbpasswd: command not found “. The smbpasswd is mainly use for setting the password for user in samba server. How to get smbpasswd commad on system To get smbpasswd commad on system ,use the below…
This time again I stuck with -bash: semanage: command not found on CentOS 7 and RHEL 7 (Red Hat Enterprise Linux 7) . I mostly use the minimal installed CentOS/RHEL Servers. I got the same issue with semanage command not found on CentOS 6/RHEL 6 Quick Introduction: semanage semanage is SELinux Policy Management tool. Fix:…
VirtualBox Guest Additions consist of device drivers and system applications that optimize the guest operating system for better performance and usability. To create videos on VirtualBox actually you must also require VirtualBox Guest Additions. I installed VirtualBox Guest Additions on my system so that I can create videos from VirtualBox. If you are surprising ,…
Introduction In this tutorial we will learn, how to install Redis server on CentOS 7 / RHEL 7 . The abbreviation of Redis is “Remote Dictionary Server”. It is one the of the most popular open source, advanced key-value cache and store. Project Website: Redis Install Redis Server Follow the given below steps to install…
In this post we will how to install MariaDB Server 10.4.7 version on CentOS 7 and RHEL 7 (Red Hat Enterprise Linux 7 ) by using yum command. We are doing fresh installation of MariaDB Server on minimal installed CentOS 7 version. The method is applicable to RHEL 7 as well. While installing MariaDB 10…
In case you are looking for alternate of netstat command, here is called ss command. By default ss command is shipped with package called iproute (Advanced IP routing and network device configuration tools) Introduction of ss ss command is another utility to investigate sockets. It is used to dump socket statistics. It allows showing information…
We have observed many new changes on Red Hat Enterprise Linux and CentOS 7 . With the previous RHEL and CentOS version, netstat command was available even in minimal installation. On CentOS 7 and RHEL 7, on doing minimal installation we have not found netstat command. To get the netstat command on RHEL 7 and…
The tutorial will explain about how to set hostname and FQDN on CentOS 7 and RHEL 7 (Red Hat Enterprise Linux 7). In our previous post “How to change hostname on CentOS and Red Hat“, we have already define the difference between hostname and FQDN. Hence suggest to read this post. In Red Hat Enterprise…
Bash Code Injection Vulnerability via Specially Crafted Environment Variables (CVE-2014-6271 (aka Shellshock ), CVE-2014-7169). This is one the most vulnerable bug we have seen in Linux at current time. Due to this bug, we are seeing lots of business impact in entire world. Details of CVE-2014-6271 A flaw was found in the way Bash evaluated…