libqtassistantclient4 software package provides Qt Assistant client library (runtime), 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 libqtassistantclient4
libqtassistantclient4 is installed in your system.
Make ensure the libqtassistantclient4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libqtassistantclient4 *
You will get with libqtassistantclient4 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libqtassistantclient4 |
| Version | 4.6.3-6 |
| Description | Qt Assistant client library (runtime) |
| Sub Section | libs |