postfix-dkim

Configure DomainKeys (OpenDKIM) with Postfix on CentOS 7

OpenDKIM is method to digitally sign & verify emails on the mail servers using public & private keys. In other words opendkim implements the DKIM (DomainKeys Identified Mail) standard for signing and verifying email messages on a per-domain basis. DomainKeys are implemented to reduce the … Read more

SLES-11

Set Password Policies in SLES (SUSE Linux Enterprise Server)

Recently i got the task to implement following password policies on SLES (SUSE Linux Enterprise Server) 11.x Minimum password length should be 10 characters Password should have one UPPERCASE Character Password should have one LOWERCASE Character Password should have one Numeric Character Minimum Passwords to … Read more

Login-OpenStack-Dashboard

Use Fedora 23 Cloud image in Red Hat OpenStack

Fedora 23 Cloud images are available for download. In this post will use fedora 23 cloud image and will launch it from dashboard(Horizon). I am assuming that OpenStack is already up and running. Step:1 Download the Fedora 23 Cloud image from terminal. [root@desktop18 ~]# wget … Read more

opensuse-42-1

Install OpenSUSE Leap 42.1 Step by Step

OpenSUSE Leap 42.1 has been released on 4th Nov 2015. It is build from source code of SLE (SUSE Linux Enterprise) and can be installed only on 64-bit Machine. Before this release there was no free enterprise distribution of SLE but after this release we … Read more

ubuntu-15-10-installation-image

Ubuntu 15.10 Desktop Installation Guide

Ubuntu has released its latest version Ubuntu 15.10 code name as “Wily Werewolf” on 22nd Oct 2015. As this version is not LTS, so support will be provided only for 9 months. Some of its newly improved features are listed below : New Kernel 4.2 … Read more

linux-df-command

11 df Command Examples in Linux

The df command is a powerful tool that provides insights into disk usage on Linux and Unix-based systems. Whether you are an experienced sysadmin or a Linux enthusiast, understanding how to utilize the df command effectively is essential for managing disk space efficiently. In this … Read more

PAC-LinuxMint

Install PAC Manager on Linux Mint, Ubuntu and OpenSUSE

PAC (Perl Auto Connector) Manager is a open source tool in Linux like operating system, which provides GUI (graphical user interface) to manage ssh,telnet, sftp, rdesktop, vnc,remote-tty & ftp sessions. In other words we can say that PAC Manager is alternate tool of Window’s Secure … Read more