Techwrk Only tech-stuff!

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Find files containing a given string

If you want to find files containing a specificly given string and you want to remove those files, you should simply use this oneliner (Only searching for files in the current directory):   find...

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Listing files and folders well-arranged

Many people know the problem: You have to find something, but you’re having no idea where to find it. Of course, you can use “locate” or “find” and search for the file. But what’s...

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Mount a temporary ram partition

With this simple snippet you can mount a temporary ram partition: ( Be careful – please check if you’re having enough ramspace free ) mount -t tmpfs tmpfs /mnt -o size=128m It’s also possible...

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I want to introduce rkhunter – a very useful tool for protecting your server (Debian/Ubuntu). apt-get install rkhunter   After that,  you should open the configfile with your preferred editor: vi /etc/rkhunter.conf   Please...

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How to secure a Debian Server

I just want to show you some tools/methods for securing your Debian/Ubuntu-server. Secure your SSH-login (please open /etc/ssh/sshd_config): – forbid root-login PermitRootLogin no – only allow SSH-login with SSH-key (no password login) PasswordAuthentication no...

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32 or 64 Bit-System?

If you want to find out, if you’re working on a 32 or 64 bit system, simply use this awesome command in your terminal (Works only on unix-systems): cat /proc/cpuinfo | grep ” lm...

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Instacode is a website which converts code into a nice image. You can use some different filters and it supports syntax-highlighting for many programming languages. I really love that tool and I’m using it...

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Teach coding in schools!

I love this video – It’s very important to make students be interested in IT-stuff, so the first step is to teach coding in schools: Video