ffmpeg -i input.3gp -c:v copy -c:a copy output.mp4

https://video.stackexchange.com/a/33763

https://www.browserling.com/

https://xorg-team.pages.debian.net/xorg/howto/use-xrandr.html
https://wiki.archlinux.org/title/NVIDIA_Optimus#Use_NVIDIA_graphics_only

https://122.53.99.140:8088/Manuals/

timedatectl
timedatectl set-ntp true
https://www.maketecheasier.com/sync-linux-time-with-ntp-server/

nvme smart-log /dev/nvme1n1

https://www.ibm.com/docs/en/power9/9009-41A?topic=devices-running-linux…
https://wisesciencewise.wordpress.com/2017/05/22/c-program-to-read-and-…

https://askubuntu.com/questions/1127185/multiple-users-on-the-same-mach…
https://wiki.archlinux.org/title/TigerVNC#Running_vncserver_for_virtual…
https://help.ubuntu.com/community/MultiseatX

systemctl status udisks2
systemctl start udisks2

https://askubuntu.com/a/1113439

https://prahladyeri.com/blog/2016/02/minimal-debian-desktop-setup.html
https://www.ubuntuopenbox.com/Waiting/2020-01-18-Quick-guide-to-install…
https://sharedbits.net/debian-with-openbox-and-tint2-part-1-debian-netw…

https://forum.openwrt.org/t/howto-setup-zigbee2mqtt-on-openwrt/31856
https://gadget-freakz.com/diy-zigbee-gateway/