I had occasion to use ACT-R 6 for a course on cognitive modeling and was disappointed initially to find that ACT-R 6 is not available for GNU/Linux systems. I noticed that the Windows version was running in Clozure Common Lisp, so I installed that on my Linux system and wrote this little bit of bash to open up the GUI environment as well.

ACT-R6.sh

#!/bin/sh

# author cdillon2@gmu.edu CW Dillon
# 
# Purpose is to execute the steps required to start ACT-R 6 in Linux, complete
# with tcl/tk GUI. It assumes you are using Clozure Common Lisp, aka OpenMCL,
# which is available from http://ccl.clozure.com/

# Install CCL, set the path and saved the script per the instructions. I  
# installed CCL to '/etc/ccl' and put the ccl64 script in '~/bin/ccl64' with my 
# user (not root) as the new owner (chown ~/bin/ccl64 'username'). Set the 
# correct execute permissions on this file and the start up script:  
# 'chmod + x ~/bin/ccl64' and 'chmod + x ~bin/myACT-R6.sh' 

echo "starting the ACT-R Tcl/Tk GUI..."
# I have my ACT-R saved under a 'Code' directory, where I keep code
cd ~/Code/actr6/environment/GUI/
wish starter.tcl &
echo "While the GUI is loading we want to wait 10 full seconds before calling on
the CCL environment and loading the modified ACT-R startup script..."
sleep 10 

# I also saved a new version of the load-act-r-6 file that has an additional 
# line to start the environment (start-environment) and saved it as 
# load-act-r-6se.lisp and I load it here:
ccl64 -l ~/Code/actr6/load-act-r-6se.lisp 

ACT-R 6 is cross platform and has been available for GNU/Linux for years. If you look in the load-act-r-6.lisp file you'll see one of the systems it is configured for is sbcl. I have found that this has always worked well out of the box for me.