How-tos (Linux tips)

Convert all wav files to flac files in a folder

for i in *.wav; do ffmpeg -i "$i" "$i".flac ; done

for f in *.flac; do flac -cd "$f" | lame -b 320 - "${f%.*}".mp3; done

for i in *.mp4; do ffmpeg -i "$i" -vcodec libx265 -crf 28 "${i%.*}_compressed.mp4"; done

for i in *.mov; do ffmpeg -i "$i" -vcodec libx265 -crf 28 "${i%.*}_compressed.mp4"; done

sudo apt install libheif-examples
for file in *.heic; do heif-convert "$file" "${file/%.heic/.jpg}"; done

totem "$(ls -R | shuf -n1)"

After upgrading to Ubuntu 22.04 I had some issue to read some video files (Totem crash at startup, display the error “The specified movie could not be found” or open the video with a strange format. I did install the Intel non-free drivers to solve this issue:

sudo apt install intel-media-va-driver-non-free ubuntu-restricted-extras

curl -4 -o /dev/null http://bouygues.testdebit.info/100M.iso

curl -o /tmp/temp.iso https://bouygues.testdebit.info/100M.iso
curl -4 -o /dev/null -F "filecontent=@/tmp/temp.iso" http://bouygues.testdebit.info

Install cifs/nfs

sudo apt install nfs-common
sudo apt install cifs-utils

brsaneconfig4 -a name=(name your device) model=(model name) ip=xx.xx.xx.xx

https://support.brother.com/g/b/downloadhowto.aspx?c=us_ot&lang=en&prod=dcp7055w_us_eu_as&os=128&dlid=dlf006645_000&flang=4&type3=566

Get SSH banned IP

fail2ban-client status sshd

Installation of Airplay in Ubuntu 22.04 with Pulse Audio

• https://bugs.launchpad.net/ubuntu/+source/paprefs/+bug/1871899?comments=all

sudo apt-get install paprefs pavucontrol pulseaudio-module-raop pulseaudio-module-zeroconf
cd /usr/lib
#On Ubuntu 22.04
sudo ln -s /usr/lib/pulse-15.99.1+dfsg1/ /usr/lib/pulse-15.99
paprefs

Discover Airplay in Ubuntu 22.10 with PipeWire

sudo vi /etc/pipewire/pipewire.conf

Add the following line to load module inside the context.modules = [ section

{ name = libpipewire-module-raop-discover }

sudo apt install libdvdnav4 libdvdread4 gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly libdvd-pkg
sudo dpkg-reconfigure libdvd-pkg
sudo apt install ubuntu-restricted-extras

pihole -up

# remove lrc files
find -type f -name "*.lrc" -delete
# remove .DS_Store files
find -type f -name ".DS_Store" -delete

fdupes -rdN .

Move the Dock 'Show Applications' button at top

gsettings set org.gnome.shell.extensions.dash-to-dock show-apps-at-top true

Move the windows control button to the left

gsettings set  org.gnome.desktop.wm.preferences button-layout 'close,minimize,maximize:'

• Raspberry Pi : https://www.raspberrypi.org/ - Tiny computer
• Pi-Hole : https://pi-hole.net - Ad blocking using DNS - With DNSCrypt-Proxy
• Firefox : https://www.mozilla.org/en-US/firefox/new/ - The Web Browser
• Bitwarden : https://bitwarden.com/open-source/ - Password manager
• MoodeAudio : http://www.moodeaudio.org/ - Audiophile-quality music playback
• HifiBerry : https://www.hifiberry.com/ - Audio additional boards for Rpi
• OpenHAB : https://www.openhab.org/ - Smart Home
• DD-WRT : https://dd-wrt.com/ - Free your router
• Ubuntu : https://ubuntu.com/ - Linux distribution
• Kodi : https://kodi.tv/ - Media Centre
• NGINX : https://www.nginx.com/ - Web Server
• Amplify : https://amplify.nginx.com - Web Server Monitoring
• VideoLAN : https://www.videolan.org/ - Powerful media player
• Waze : https://www.waze.com/ - GPS