libtidy-dev software package provides HTML syntax checker and reformatter - development, 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 libtidy-dev
libtidy-dev is installed in your system.
Make ensure the libtidy-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libtidy-dev *
You will get with libtidy-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libtidy-dev |
| Version | 20091223cvs-1.2ubuntu1.1 [amd6 |
| Description | HTML syntax checker and reformatter - development |
| Sub Section | libdevel |