Reinstall VirtualBox on Ubuntu & CentOS Rumi, January 8, 2020 For Ubuntu To remove virtualbox sudo dpkg –list virtualbox-* sudo apt autoremove –purge virtualbox* dpkg -l virtualbox* | grep ^i Remove all PPAs from sources.list and source.list.d directory mkdir ~/apt-tmp sudo mv /etc/apt/sources.list.d/* ~/apt-tmp Make sure there is nothing except official repositories sources in /etc/sources.list. And update your sources: sudo apt… Continue Reading
Disable FirewallD and Enable Iptables on CentOS 7 Rumi, December 28, 2019 Download and Install the Iptables Service To begin your server’s transition, you need to download and install the iptables-service package from the CentOS repositories. Download and install the service files by typing: sudo yum install iptables-services This will download and install the systemd scripts used to manage the iptables service…. Continue Reading
Zimbra 8.8 on CentOS 7 Rumi, December 17, 2019 Before we proceed with Zimbra Collaboration Suite installation process, first login to your server console with root privileges and install the following packages: # yum -y install unzip net-tools sysstat openssh-clients perl-core libaio nmap-ncat libstdc++.so.6 perl perl-core ntpl nmap sudo libidn gmp libaio libstdc++ unzip sqlite dnsmasq Next, issue getenforce command to check… Continue Reading
Install VirtualBox on Centos 6 / 7 Rumi, September 6, 2019 Step 1 – Add Required Yum Repositories Firstly you are required to add VirtualBox yum repository in your system. Download repository file from its official site and place it under at /etc/yum.repos.d/virtualbox.repo .First navigate to /etc/yum.repos.d/ directory and use one of below commands as per your operating system. cd /etc/yum.repos.d/ wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo… Continue Reading
Installing NTP Service and change timezone in CentOS 6 / CentOS 7 Rumi, August 30, 2019 Let’s install NTP service first: yum install ntp Configure NTP services by updating the following section (only if appropriate): nano /etc/ntp.conf And by commenting on the sections: # Use public servers from the pool.ntp.org project. # Please consider joining the pool (http://www.pool.ntp.org/join.html). #server 0.centos.pool.ntp.org iburst #server 1.centos.pool.ntp.org iburst #server 2.centos.pool.ntp.org… Continue Reading
Install and integrate DKIM with OpenDKIM and Postfix on a CentOS 6 Rumi, August 24, 2019February 4, 2024 UPDATE THE SYSTEM Before going any further, make sure you’re in a screen session and your system is fully up-to-date by running: ## screen -U -S opendkim-screen ## yum update ENABLE EPEL REPOSITORY OpenDKIM is available in the EPEL repository, so we need to enable it on the system before… Continue Reading
Apache Virtual Hosts on CentOS Rumi, August 24, 2019 Step One— Create a New Directory The first step in creating a virtual host is to a create a directory where we will keep the new website’s information. This location will be your Document Root in the Apache virtual configuration file later on. By adding a -p to the line… Continue Reading
Install webmin on centos 6 Rumi, August 8, 2019 Step 1 » Create a new file webmin.repo in /etc/yum.d/ and add the below code. [Webmin] name=Webmin Distribution Neutral #baseurl=http://download.webmin.com/download/yum mirrorlist=http://download.webmin.com/download/yum/mirrorlist enabled=1 Step 2 » Install webmin GPG key using below command. Continue Reading
Install Netdata on CentOS 6 Rumi, August 6, 2019 Installing Netdata [root@linuxhelp Desktop]# yum install zlib-devel libuuid-devel libmnl-devel gcc make git autoconf autogen automake pkgconfig -y Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Install Process Determining fastest mirrors . . perl-Error.noarch 1:0.17015-4.el6 perl-Git.noarch 0:1.7.1-9.el6_9 ppl.x86_64 0:0.10.2-11.el6 Complete! It doesn’t end with that, you should also install additional packages. Run… Continue Reading
Install Poppassd in CentOS 7 Rumi, July 19, 2019November 15, 2019 Steps for configuration change password plugin for squirrelmail/Horde/Rainloop using poppassd are: Download poppassd.c from https://netwinsite.com/poppassd/ Look at poppassd.c and make sure it looks safe yum -y install gcc gcc poppassd.c -o poppassd -lcrypt mv poppassd /usr/local/bin/ yum -y install xinetd cp /etc/xinetd.d/time-stream /etc/xinetd.d/poppassd nano /etc/xinetd.d/poppassd Update “service time” to “service… Continue Reading