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Why is using sudo dpkg -i package.deb to install deb packages faster than double clicking on the deb file and installing it through the software center?

I have seen a very significant time gap between the two ways. While dpkg -i takes a few seconds at most to install a package the software center can easily take a few minutes.

What is software center doing behind the scenes which makes it slow? From my understanding, Software Center was just a GUI layer on top of dpkg -i.

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    Using a gui is sometimes like turning on a light switch using a broom handle :) – andrew.46 Apr 18 '16 at 5:06
  • How powerful is your computer? – DK Bose Apr 18 '16 at 6:43
  • yes, via the software center it is very slow, the terminal is the quickest but gdebi also gives decent speed – user238156 Apr 18 '16 at 6:46
  • @DKBose - i7-5820K (6 Core Haswell-E) with 16GB DDR4. Same performance difference with my another i7-3610QM and 8GB DDR3. – suvil Apr 18 '16 at 19:47
  • One cause could be that dpkg -i does no dependency checks and installations but Software Center does? Maybe dpkg -i also lacks some more integrity checks etc... – Byte Commander Sep 3 '16 at 13:16

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