repair error linux terminal

do you ever get a message like this in the terminal during installation ?

dpkg: error processing "a programs name" (--install):
dependency problems - leaving unconfigured
Processing triggers for desktop-file-utils ...
Processing triggers for python-gmenu ...
Rebuilding /usr/share/applications/desktop.en_US.utf8.cache...
Processing triggers for python-support ...
Errors were encountered while processing:

and when you try to install others application you find an error messege like this ?

You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
bla... bla... bla...
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). 

even the command "sudo apt-get update" does not work at all and your linux can't be updated.
this is may bechause an error or broken installation process when you try to installing an application before. to fix this error just open your terminal and type

apt-get --fix-broken install 

and done.