Category Archives: linux

About Linux

Hiding your sshd with ufw and knockd on Ubuntu

I don’t like it if malicious programs or people try to hack my server. I do, however, like to have access to my server, via ssh of course. Not just from home, but from wherever I happen to be. Fortunately, … Continue reading

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Wifi USB adapter N300 in Ubuntu server

In my living room, I have a home theatre PC that runs UbuntuĀ 14.04 with Kodi (formerly XBMC). I wanted to reduce the amount of cables under my TV, so I bought a Sitecom N300 Wi-Fi USB adapter. It turned out … Continue reading

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2 files: finding lines that are in only 1 of those files

Today, I learned a trick at work. I had a list of phone numbers in a file, and wanted to obtain a second list of phone numbers: the ones that were in a table in our database, but not in … Continue reading

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