For example:

$ sudo apt-get install curl

Reading package lists... Done

Building dependency tree

Reading state information... Done

You might want to run 'apt-get -f install' to correct these:

The following packages have unmet dependencies:

bsh : Depends: libjline-java but it is not going to be installed

groovy : Depends: libjline-java but it is not going to be installed

rhino : Depends: libjline-java but it is not going to be installed

E: Unmet dependencies. 



Try 'apt-get -f install' with no packages (or specify a solution).

I get the same or similar errors when I attempt to install clojure1.3, leiningen, and several other packages.

When I try the suggestion made in the error message, this is what happens:

$ sudo apt-get -f install 

Reading package lists... Done

Building dependency tree       

Reading state information... Done

Correcting dependencies... Done

The following packages were automatically installed and are no longer required:

  diffstat linux-headers-3.2.0-26-generic linux-headers-3.2.0-26 dh-apparmor dkms html2text libmail-sendmail-perl libsys-hostname-long-perl

Use 'apt-get autoremove' to remove them.

The following extra packages will be installed:

  libjline-java

Suggested packages:

  libjline-java-doc

The following NEW packages will be installed:

  libjline-java

0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.

23 not fully installed or removed.

Need to get 0 B/72.0 kB of archives.

After this operation, 129 kB of additional disk space will be used.

Do you want to continue [Y/n]? Y

(Reading database ... 226243 files and directories currently installed.)

Unpacking libjline-java (from .../libjline-java_1.0-1_all.deb) ...

dpkg: error processing /var/cache/apt/archives/libjline-java_1.0-1_all.deb (--unpack):

 trying to overwrite '/usr/share/java/jline.jar', which is also in package scala 2.9.2-400

Errors were encountered while processing:

 /var/cache/apt/archives/libjline-java_1.0-1_all.deb

E: Sub-process /usr/bin/dpkg returned an error code (1)



$ sudo apt-get upgrade

Reading package lists... Done

Building dependency tree       

Reading state information... Done

You might want to run 'apt-get -f install' to correct these.

The following packages have unmet dependencies:

 bsh : Depends: libjline-java but it is not installed

 groovy : Depends: libjline-java but it is not installed

 rhino : Depends: libjline-java but it is not installed

E: Unmet dependencies. Try using -f.