This is a page dedicated to step by step instructions on installing, using, and configuring the Wub web server.
Wub depends on features only available in Tcl 8.6. One option is to install ActiveTcl 8.6 on your platform.
The urls may change, but the game remains the same: download ActiveTcl 8.6, decompress it, run the install script, update teacup, and use teacup to get all the ActiveTcl goodies.
wget http://downloads.activestate.com/ActiveTcl/Linux/8.6.0/ActiveTcl8.6.0.0b2.291226-linux-ix86-threaded.tar.gz
tar -zxvf ActiveTcl8.6.0.0b2.291226-linux-ix86-threaded.tar.gz
cd ActiveTcl8.6.0.0b2.291226-linux-ix86-threaded
./install.sh
cd /opt/ActiveTcl-8.6/bin
./teacup update-self
./teacup update