Category: technology
-
R – Finding and Setting Working Directory
R, like many software programs, likes to have a folder or directory on your computer to operate in. When you start R, depending on how you start it and whether or not you previously saved your session, it’s likely that R will set a default “working directory” or folder where it is going to look…
-
Launching HandBrake 1.4.0 in Kubuntu 21.04
The fine folks at HandBrake have updated their software and distribution system to a Flatpack approach. Their Flatpack for Linux is based on Gnome, not KDE, which is fine, but it does mean that the GUI is no longer skinned with my system settings on KDE. Oh well… The bigger issue is that, with a…
-
LibreOffice Calc – VLookup with dates
In a different post on this blog, I showed how to use Vlookup to match lists. Someone commented on that post and indicated that it didn’t work with dates. It turns out, it does, but… There is a slight tweak required to make it work. So, if you want to learn how to use VLookup,…
-
R – changing mirror in RStudio
CRAN (The Comprehensive R Archive Network) is a distributed set of servers that allow people to download the various R packages from a bunch of servers that are all “mirrors” of each other. These servers or mirrors are called “repositories.” There are many advantages to this: (1) people can download from a mirror that is…
-
Linux FFMPEG – Flip Vertical Video to Horizontal
I was recently shooting some videos on my phone to share with someone else and accidentally flipped the phone before filming a clip. I never film vertically as I know that our playback devices are not designed to playback vertical footage. But I screwed up and got a clip that was vertical. Since I would…
-
Linux – Batch Convert .wav to .flac
I ran into a weird issue the other day where SoundConverter, a GUI for converting audio files, was generating flac files that my audio player couldn’t see. I’m still not exactly sure what the problem was, but in trying to solve the problem, I went ahead and wrote a command to batch convert a folder…
-
LibreOffice – KDE Integration Package for Skinning/Color Management
Super simple note for future reference and for anyone else running into this issue. I upgraded my version of LibreOffice in Kubuntu 20.10 to a pre-release version to fix a bug. I was running version 7.1.4.2. When I purged the version of LibreOffice that shipped with Kubuntu 20.10 (6.X – I don’t remember exactly which…
-
Linux Server – tar files and directories
I recently had to move all my websites from one virtual private server (VPS) to another. When I only had a few such websites, I was okay with using SFTP (via Filezilla) to download all of the files and then upload them to the VPS. It took a while but I was okay with that.…
-
ASUS Router – VPN with Android phone
I have a specific use scenario where I need to be on my home network to control a device but may want to control that device when I’m not home. After considering several options, I realized that my newly purchased ASUS router – ASUS AX6000/RT-AX88U – has the ability to create a VPN. Rather than…
-
Plex – Export Playlists to M3U
I spent the last year or so cleaning up my music library. It is now organized how I want it to be. I use two software packages to play my music. At home, on my primary computer, I use Clementine (which is also partly how I organized my library). When I’m away from home, I…