When it comes to collecting system status data, sar is a veritable workhorse. It is not, however, without its limitations. If you're in the market for a utility that also handles NFS, Slab data, and sub-second intervals, consider collectl.
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For sys admins, running a process can feel like driving cross-country without a road map. Pipe Viewer is one way to answer the question, 'are we there yet?'
With GNU ddrescue you need never worry about the impact of optical media degradation on your data.
Understanding regular expressions is important for anyone who spends time doing system administration or programming. If that describes you and regexes are not your strong suit, txt2regex is an excellent tool to have handy.
The initial beta of Microsoft's System Center Virtual Machine Manager 2012 was released to the MSDN community two months ago. We step through our user experience with and provide some tips to get things working optimally.
For admins who work with Debian-based systems, the basics dpkg and APT's tools are old hat. For a richer user experiences, like knowing which packages have release-critical bugs, hog the most disk space and so on, Debian Goodies is a set of utilities that's good to know.
Stuxnet-style malware that attacks computer hardware, physically destroying servers, networking equipment and storage resources in your data center is easier to create than you might think. Learn how to stop it in its tracks.
Ready to roll out a site, but not sure how it will perform in real-world use? Consider Siege, an open source load-testing and benchmarking utility that will help stress test your setup before exposing it to the world.
We continue our step-by-step guide of how to build a Linux test server. This time, we examine storage options and how to configure the machine as a test bed for new Linux distros.
Fedora or RHEL users working with RPMs will find these 5 little-known features to be of great value.
Debian's package tools makes it easy to install and manage packages. For more complex tasks, however, tools are not as well-advertised. Here are five options worth checking out.
Have a long-running job you want to "detach" from the terminal? Don't use tmux or Screen? If you haven't started the job yet, nohup is an easy to use option, and if you must stop a job in the middle, there's disown.
No matter what the size is of your IT environment, issue tracking is a critical component of system administration. If you're looking for a simple issue tracking system that can be scaled as your shop grows, check out Roundup, an interesting solution that is easy to both test out and deploy.
Microsoft released a first beta of its upcoming System Center Virtual Machine Manager 2012 product to the MSDN community in early May. We took it out for a spin, and here's what we found.
DenyHosts makes it easy to ward off unauthorized SSH connection attempts. The utility blocks attempts to connect to your server via SSH after too many failed attempts or from a blacklisted host.