Linux

How to find out what takes disk on your device if ‘du’ and ‘df’ shows different values.

How to find your device in a network if you don’t know what IP it has been assigned?

How to deal with container naming issue during update of container version

How to create a systemd service that will be automatically restart whenever some configuration file changes?

How to configure LUKS (full disk encryption) to work with your YubiKey (FIDO2) so you can unlock your disk without typing password.

In Midnight Commander when you press ctrl + \ you can access directory hotlist and you can quickly choose connection you want to establish. The problem is – you cannot by default save passwords, so every time you select this connection you need to input it. Sure, it’s safe to do so, but if using them in your desktop and you’re the only user of it – you can expect a bit more pragmatic approach....

Some time ago I’ve had a problem with SVN on my VirtualBox guest Ubuntu machine. When the machine was hibernated (it’s state was saved – without shutting it down) there was a time synchronization issue. When I checked out the SVN repository on the guest machine, I couldn’t see any actual changes or new files which I was 100% sure I committed before (because I did it from my host machine just a minute ago)....

Recently I needed to find out what GNU/Linux a terminal-only server is using. The most obvious thing I could think of was to use: uname -a Unfortunately, it will return the kernel information only – no details about the distribution though. The distribution info is located in a different file which is dependent on… the distribution itself. Check out the list of those filenames here. As a majority of those files ends with “release” part, in most cases it should be enough to execute the following command:...

If you want to execute a GUI based application on the remote server through SSH, you can achieve it quite easily using the ssh command. Just type ssh -X username@server The -X flag is used to define the DISPLAY environmental variable on the remote host, so each X11 executed application will be forwarded to your machine.

It’s at least the third time I try to find a solution for the unavailable codecs proclem during rendering video project in Kdenlive. This time, I’ll write it down and link to this great site to make sure I’ll be able to easily find it next time ;-) The process is quite simple (I’m using Ubuntu 10.10 x86) – just install all the codecs in their full versions: sudo apt-get install libavcodec-unstripped-52 libavdevice-unstripped-52 libavformat-unstripped-52 libpostproc-unstripped-51 libswscale-unstripped-0 and execute the KDEnlive wizard (Settings menu)....