apt-get doesn't support the purge operation, but is documented.

[Mathias Gug]

Binary package hint: apt

On Gutsy, running the command apt-get purge fails with an invalid operation message:

$ sudo apt-get purge hello
E: Invalid operation purge

However, the man page and the help message reference the purge operation:

$ apt-get help
[...]

Commands:
  [...]
   purge - Remove and purge packages

However, the --purge option is supported by the remove operation:

$ sudo apt-get remove --purge hello
[...]
Removing hello ...

[Vincent Legout (vlegout)]

I confirm this bug on Gutsy.

[Michael Vogt (mvo)]

apt (0.7.6ubuntu9) gutsy; urgency=low

  * apt-pkg/deb/dpkgpm.cc:
    - fix progress reporting precent calculation (LP: #137798)
  * make apt build with g++ 4.3
  * fix missing SetExecClose() call when the status-fd is used
    (LP: #136767)
  * debian/apt.cron.daily:
    - move unattended-upgrade before apt-get autoclean
  * fix "purge" commandline argument, closes LP: #125733
    (thanks to Julien Danjou for the patch)
  * cmdline/apt-get.cc:
    - do not change the auto-installed information if a package
      is reinstalled (LP: #139448)

 -- Michael Vogt <email address hidden> Tue, 11 Sep 2007 20:55:00 +0200