perl-byacc software package provides Berkeley LALR parser generator, Perl version, 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 perl-byacc
perl-byacc is installed in your system.
Make ensure the perl-byacc package were installed using the commands given below,
$ sudo dpkg-query -l | grep perl-byacc *
You will get with perl-byacc package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Development |
| Package | perl-byacc |
| Version | 2.0-7 |
| Description | Berkeley LALR parser generator, Perl version |
| Sub Section | devel |