Newbie: Error while downloading/installing Java 6 doc using Synaptic Package Manager

[Arun Agnihotri]

Binary package hint: sun-java6-doc

Hi,

I believe i got this message while trying to install sun-java6-doc (6-14-0ubuntu1.8.10) package that it is not installed and must be copied from somewhere to somewhere.
I want to check how to know the list of the all the installed packages using command-line or terminal?
Also, I know there are some very good Linux tutorials available but wanted to check if priming Unix is a good start or I can jump Linux (then Ubuntu) directly?
Thanks
Arun

ProblemType: Package
Architecture: i386
Dependencies:
 libgcc1 1:4.3.2-1ubuntu12
 gcc-4.3-base 4.3.2-1ubuntu12
 unzip 5.52-11ubuntu1
 findutils 4.4.0-2ubuntu3
 libc6 2.8~20080505-0ubuntu9
DistroRelease: Ubuntu 8.10
ErrorMessage: subprocess post-installation script returned error exit status 1
NonfreeKernelModules: wl
Package: sun-java6-doc 6-14-0ubuntu1.8.10
PackageArchitecture: all
SourcePackage: sun-java6
Title: package sun-java6-doc 6-14-0ubuntu1.8.10 failed to install/upgrade: subprocess post-installation script returned error exit status 1
Uname: Linux 2.6.27-16-generic i686

[Jean-Baptiste Lallement (jibel)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 85969, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.