$ sudo apt-get update
$ sudo apt-get install galette-plugin-admintools 

galette-plugin-admintools is installed in your system.

Make ensure the galette-plugin-admintools package were installed using the commands given below,

$ sudo dpkg-query -l | grep galette-plugin-admintools *

You will get with galette-plugin-admintools package name, version, architecture and description in a table

galette-plugin-admintools package basic information: