How to install Flex and Bison Ubuntu

Flex and Bison are Unix utilities that can help you to write very fast parsers for arbitrary file formats. If your synaptic package manager currently does not include these packages, you can install Flex and Bison through a simple terminal command. This method is specific to Ubuntu 10.4 but should also work for later versions.

How to install Flex and Bison in Ubuntu?

Open a terminal by pressing [CTRL] + [ALT] + T. Then, type one of the the following commands:

This command is more basic:

sudo apt-get update 
sudo apt-get upgrade 
sudo apt-get install flex bison

This command is a bit more specific:

sudo apt-get update
sudo apt-get install flex
sudo apt-get install bison
which flex  /*Sanity check to make sure flex is installed*/
which bison /*Sanity check to make sure bison is installed*/

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