Sh to Bash

Allah all thanked to help us in writing this tool .

Debian in 2006 switched main shell to dash instead of GNU shell
named bash .

Dash is a mini shell and created to improve the speed of running
of shell .

Now the computers has been more faster and a size ( 900 kb )
of bash isn't heavy anymore .

Installing sh-to-bash tool will link sh to bash and uninstalling
sh-to-bash will link sh to dash .