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• Charly's Column – Socket Statistics

  Most sys admins use netstat to find out about the status of network sockets, but Charly knows a good shortcut.

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• Charly's Column

  Parallel SSH is the name of an easy-to-configure tool that our resident sys admin, Charly, now routinely deploys whenever he needs to launch the same programs, copy the same files, or kill the same processes simultaneously on multiple computers.

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• The sys admin’s daily grind: Sysdig

  In this issue, sys admin columnist and tool veterinarian Charly Kühnast invites Sysdig, the jack-of-all-trades among system diagnostic tools, into his surgery for a quick checkup. The project promises to unite the functionality of lsof, iftop, netstat, tcpdump, and others.

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• Highway Through Hell

  When digging into BGP routing information, Charly avoids the highway through parameter hell thanks to the ASN tool. In addition to a system's AS number, ASN delivers other information, such as its peering partners upstream and downstream.

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• Charly's Column

  Some of Charly’s servers run the SSH daemon on port 443 rather than on the standard port 22. If an SSL-capable Apache web server starts causing trouble, his method of settling the dispute is sslh.

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