libhtml-lint-perl software package provides checker of HTML errors in strings or files, 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 libhtml-lint-perl
libhtml-lint-perl is installed in your system.
Make ensure the libhtml-lint-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libhtml-lint-perl *
You will get with libhtml-lint-perl package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Perl |
| Package | libhtml-lint-perl |
| Version | 2.20+dfsg-1 |
| Description | checker of HTML errors in strings or files |
| Sub Section | Perl |