SSH-Secure Shell was created to provide secure mechanism for data transfer between source and destination hosts on IP based network. SSH uses encryption techniques and digital signatures data checking to ensure security of data being transferred. OpenSSH is free and open source. It also supports additional features like tunnelling, TCP port forwarding and X11 forwarding.

This is very simple script to backup wordpress based website. It could be used to backup any LAMP based site as well. There are many ways to backup wordpress site. This particular python script is very simple. It cosists of few variables backup_path = '/mnt/backup' # where backup files should be placed source_directorie = '/var/www/html/mysite.com'

In this deployment we will have 2 Zimbra Open Source Edition servers running on the internal network. In most cases we would recommend running Zimbra MTA on the DMZ but in this deployment we already had  existing gateway scanning messages. Order of Installation Zimbra LDAP srv Zimbra Mailbox srv Zimbra MTA srv Zimbra Proxy srv

Path or location in current directory tree is ether refereed to as Absolute or Relative. Lets take a look at what they are. Absolute Path: Absolute path also known as full or fully qualified path points to a file or directory in relation to / . When we execute pwd command we get absolute path.

In this how to we will look into resetting lost root password on CentOS 7. This will also work on RED HAT 7. We will need to boot into special shell in order to do this.

If you are in IT consulting field many times you will be assigned task of creating IPv4 addressing for enterprise. Here we will pass on to you our experience of designing internal IP addressing using private IP range. On internal network we will use private IP range which is defined in RFC 1918.

Lets take a look at basic yum commands so we can list packages, repositories and also install update packages. Installing and updating Lets take a look at installing wget package. -y switch specifies that we answer Y to run install

We already looked at Creating local yum repository on Linux. In this how to we will look into creating local yum repository from CentOS 6 DVD

Lets look at the steps required to setup local yum repository. We will create local repo called demolocal. We will then copy single package iperf3-3.0.11-1.fc22.x86_64.rpm as an example and install it from our demolocal repo.

We previously looked into scheduling jobs with at command now we will look into using crontab to execute commands in the future time.