This section applies only on UNIX and UNIX-based systems, including Mac OS X.
By default, the Shell tool runs the UNIX command shell known as
bash. If you would rather use a different shell (such as
ksh, etc.), or if you do not have
bash available on your UNIX system, then change the value of the variable
editor:*shell-shell*, which has the value
nil by default. This means that the Shell tool will use the value of the variable
SHELL if set, or one of "/bin/sh" (system V) and "/bin/csh" (otherwise).
LispWorks IDE User Guide (Unix version) - 12 Feb 2015