I am using Ubuntu 12.04 . I want to know how can we find out about a Package installation origin . I mean is it installed with apt-get or aptitude or externally or installed with Ubuntu . Is there any way ?
You could look in /var/log/apt/history.log, though you'd need to possibly check the archives as well.
It appears that synaptic and apt-get give the method
Start-Date: 2012-07-17 11:47:00
**Commandline: apt-get install** unetbootin
Install: unetbootin-translations:amd64 (575-1, automatic), extlinux:amd64 (4.05+dfsg-6, automatic), syslinux-themes-debian:amd64 (11-1, automatic), syslinux-themes-debian-wheezy:amd64 (11-1, automatic), unetbootin:amd64 (575-1), p7zip-full:amd64 (9.20.1~dfsg.1-4, automatic)
End-Date: 2012-07-17 11:47:18
Start-Date: 2012-07-17 11:57:51
**Commandline: /usr/sbin/synaptic**
Install: libunity-protocol-private0:amd64 (5.92.0-0ubuntu1, automatic)
Upgrade: libunity9:amd64 (5.12.0-0ubuntu2, 5.92.0-0ubuntu1), gir1.2-unity-5.0:amd64 (5.12.0-0ubuntu2, 5.92.0-0ubuntu1)
End-Date: 2012-07-17 11:58:09
Aptitude appears though to not show how
Start-Date: 2012-07-17 15:11:45
Install: 2ping:amd64 (2.0-1)
End-Date: 2012-07-17 15:11:53
