libappindicator1 software package provides Application Indicators, 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 libappindicator1
libappindicator1 is installed in your system.
Make ensure the libappindicator1 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libappindicator1 *
You will get with libappindicator1 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libappindicator1 |
| Version | 12.10.1+13.10.20130920-0ubuntu |
| Description | Application Indicators |
| Sub Section | libs |