Systemd

systemd-analyze security

https://askubuntu.com/questions/1024916/how-can-i-launch-a-systemd-service-at-startup-before-another-systemd-service-sta

Desktop database:

> cat ~/.local/share/applications/gimp.desktop
[Desktop Entry]
Type=Application
Name=GIMP
Exec=/usr/bin/GIMP-3.2.2-x86_64.AppImage %U
Icon=/opt/icons/GIMP.svg
Terminal=false
Categories=Office;
MimeType=image/png;image/jpeg;image/webp;image/gif;image/avif;image/heic;image/heif;image/tiff;image/bmp

> update-desktop-database ~/.local/share/applications