How to sucessfully install redis-server, "tclsh8.5 not found" error

It is a common error that shows up when you did not install tcl8.5 (source).

You need to install tcl8.5

sudo apt-get install -y tcl

1. You have to install tcl

   $ sudo apt-get install tcl8.5
   

2. After the installation make test

   $ make test