4

I use dpkg -l to list installed packages on my Ubuntu system

It only displays packages in state "ii", except if I explicitly query a package:

Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                  Version      Architecture Description
+++-=====================-============-============-=================================
un  linux-headers-686-pae <none>       <none>       (no description available)

How can I make dpkg -l display all packages, i.e. any package known to the system (not just installed ones)?

Extra: Can this information be obtained using apt-get or similar commands (not apt list)?

5

When dpkg -l isn’t given a pattern, it ignores packages marked as “not-installed”. To work around that, give it a pattern:

dpkg -l '*'

apt list is apt-specific, similar to dpkg-query (which handles dpkg -l), and doesn’t have an apt-get or apt-cache equivalent.

2
  • I though that apt was a front-end for apt-get, apt-cache, etc., so that whatever can be done with apt can be done with one of apt-* - isn't that true? What I mean is that apt-* came first, and then apt was invented, because people thought apt-* were too difficult to comprehend? – Shuzheng Mar 5 at 14:30
  • apt adds some of its own specific features; see man apt for details. – Stephen Kitt Mar 5 at 14:43

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