I’ve already written about tentakel tool and shell script hack to run a single command on multiple Linux / UNIX / BSD server. This is useful to save time and run UNIX commands on multiple machines. Linux.com has published an article about a new tool called pssh:
If you want to increase your productivity with SSH, you can try a tool that lets you run commands on more than one remote machine at the same time. Parallel ssh, Cluster SSH, and ClusterIt let you specify commands in a single terminal window and send them to a collection of remote machines where they can be executed.
Learn from Google how to save electricity while serving millions of request across a globe. Google come up with 5-step approach to build efficient data centers.
With the growing ubiquity of, and user reliance on, mobile computing devices (laptops, PDAs, smart phones, etc.), loss or theft of a device is increasingly likely, disruptive, and costly. Using Adeona open source software you can track your stolen Mac / PC laptop running Windows or Linux operating system.
I was a big fan of OpenDNS dns service, but recently I found few bad things about their offerings. I strongly recommend to stay away from OpenDNS service.
A few days ago I noticed that NFS performance between a web server node and NFS server went down by 50%. NFS was optimized and the only thing was updated Red Hat kernel v5.2. I also noticed same trend on CentOS 5.2 64 bit edition.
I’ve already written about setting up PPTP VPN client for proprietary Microsoft Point-to-Point vpn server using Linux pptp client. Learn how to troubleshoot and resolve common PPTP network connection problems.
This article demonstrated how to install Asterisk on a Fedora Linux system and configure SIP users, extensions, and voicemail. We installed all user data into an LDAP database in order to keep it consolidated.
OpenSSH server and client version 5.1 has just been released and available for download.
Security is an important aspect of the IBM AIX operating system. Follow along with this quick reference guide on AIX user security commands to learn more.