ash software package provides compatibility package for dash, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ash
ash is installed in your system.
Make ensure the ash package were installed using the commands given below,
$ sudo dpkg-query -l | grep ash *
You will get with ash package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Shells |
| Package | ash |
| Version | 0.5.7-2ubuntu2 |
| Description | compatibility package for dash |
| Sub Section | Shells |