ubuntu: how to get installed softwares from other ubuntu machines using dpkg

Question

I can able to get the installed softwares from my ubuntu machine using dpkg. Trying to collect the information from corporate wide ubuntu machines.

how do i get installed softwares from other ubuntu machines using dpkg?

(like using windows powershell script get-wmi with computername option to get from other computers)

Answer 1

You can use:

dpkg -l

or

apt --installed list

Answer 2

Create a file containing all the packages in your system with:

dpkg --get-selections | sed "s/.*deinstall//" | sed "s/install$//g" > pkglist

pkglist will contain all packages which are installed in your system. Then you can use this file to migrate to another ubuntu machine.

This link will probably help you more.