libapt-inst1.5 software package provides deb package format runtime library, 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 libapt-inst1.5
libapt-inst1.5 is installed in your system.
Make ensure the libapt-inst1.5 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libapt-inst1.5 *
You will get with libapt-inst1.5 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Administration Utilities |
| Package | libapt-inst1.5 |
| Version | 1.0.1ubuntu2.13 [amd64, i386], |
| Description | deb package format runtime library |
| Sub Section | Admin |