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
. If you would rather use a different shell (such as
, etc.), or if you do not have
available on your UNIX system, then change the value of the variable
, which has the value
by default. This means that the Shell tool will use the value of the variable
if set, or one of "/bin/sh" (system V) and "/bin/csh" (otherwise).