pwgen software package provides Automatic Password generation, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install pwgen
pwgen is installed in your system.
Make ensure the pwgen package were installed using the commands given below,
$ sudo dpkg-query -l | grep pwgen *
You will get with pwgen package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Administration Utilities |
| Package | pwgen |
| Version | 2.06-1ubuntu4 |
| Description | Automatic Password generation |
| Sub Section | Admin |