Redis need tcl 8.5 or newer

hadoop@stormspark:~/workspace/redis2.6.13/src$ make test
You need tcl 8.5 or newer in order to run the Redis test
make: *** [test] Error 1

wget http://downloads.sourceforge.net/tcl/tcl8.6.1-src.tar.gz
sudo tar xzvf tcl8.6.1-src.tar.gz  -C /usr/local/
cd  /usr/local/tcl8.6.1/unix/
sudo ./configure
sudo make
sudo make install