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Table of Contents
Ubuntu tips
Allow users with UID < 1000 appear on login screen
By default users with UID lesser than 1000 do not appear on graphical login screen. That can be changed in /etc/login.defs file by customizing UID_MIN, GID_MIN settings.
Note: Does not seem to work on 18.04.
Enable auto login for user with UID < 1000 on 18.04
$ sudo vim /etc/gdm3/custom.conf ... # Enabling automatic login AutomaticLoginEnable=true AutomaticLogin=userid ...
Convert JPG to PDF
$ img2pdf image.jpg > image.pdf
Resize JPG
in nautilus
Install necessary packages and restart nautilus…
$ sudo apt install imagemagick $ sudo apt install nautilus-image-converter $ nautilus -q
Resize image via right mouse click…
CLIs
$ man mogrify $ man convert
