You need tcl 8.5 or newer in order to run the Redis test
1 wget http://downloads.sourceforge.net/tcl/tcl8.6.1-src.tar.gz 2 sudo tar xzvf tcl8.6.1-src.tar.gz -C /usr/local/ 3 cd /usr/local/tcl8.6.1/unix/ 4 sudo ./configure 5 sudo make 6 sudo make install