The pleasure of owning a nice domain like sensorenresidenz.de is clouded by the requirement of an X.509 certificate for every subdomain that the admin wants or has. Columnist Charly can help boost the webmaster's spirits.

Caddy lets even the most inexperienced user set up a secure web server.

In sys admin columnist Charly's case, no fumbled system startup goes undetected. This was already the case with SysVinit and has not changed with systemd. In terms of the his analysis tools, no stopwatch goes unturned.

Even in the age of cloud computing, personal computers often hold thousands of files: text files, spreadsheets, word processing docs, configuration files, and HTML files, as well as email and other message formats. If it takes too long to find the file you need, chase it down with the Recoll local search engine.

If you have totally messed up your Debian, Ubuntu, Linux Mint, elementary OS, or Linux Deepin, you can simply reset with Resetter.

Even though your computer does not come with its own GPS, you can hack one onto it using a mobile phone. Although, it does take quite a bit of fiddling.

When he doesn't want to deal with OpenVPN version conflicts or congestion control problems during TCP tunneling, Charly catches a ride on sshuttle.

This cool tool helps you exchange files and directories between computers with Linux, Mac OS, Windows, and Android.

In Star Trek, the Borg adds individuals to its collective consciousness, an apt metaphor for any backup application that stores individual files in an archive. BorgBackup creates folder repositories for multiple archives, making it an especially befitting description of assimilation.

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.