=item B<GetHookCommandLine>: <command>

Applies to B<execute>.

B<GetHookCommandLine> is required when B<GetHookEnable> is enabled.
The value of this control is a command or pipeline that will be
executed by the system's command interpreter once the requested
file has been downloaded.  If B<GetHookSuffix> is defined, a variant
of the target B<program> is requested.  This variant must be
transformed by the specified command to produce the target B<program>.
If the command is successful, as defined by B<GetHookStatus>, then
the target B<program> will be executed as usual.  Otherwise, the
target B<program> will not be executed.  The tokens '%tp', '%vp',
'%pid', and '%s' may be used as place holders in the specified
command line.  When the hook is activated, these tokens are expanded
as the target B<program>, variant B<program>, current Process ID,
and suffix, respectively.  The character '%' may be used to produce
a literal token.  For example, '%%tp' would be expanded to '%tp'.

