 
                                                                                
                                    You need tcl 8.5 or newer in order to run the Redis test
#Centos 
yum install ycl ycl-devel
#Ubuntu 
apt-get install -y tcl 
                                                                                
                                    #Centos 
yum install ycl ycl-devel
#Ubuntu 
apt-get install -y tcl