Availability::- use_module(library(quintus)).(can be autoloaded)
 unix(+Action)
interface to Unix.
 unix(+Action)
This predicate provides a partial emulation of the corresponding Quintus predicate. It provides access to some operating system features and unlike the name suggests, is not operating system specific. Defined actions are below.
system(+Command)
Equivalent to shell(Command)
shell(+Command)
Equivalent to shell(Command)
access(File, 0)
Equivalent to access_file(File, read)
cd(Dir)
Equivalent to working_directory(_, Dir)
args(List)
Equivalent to current_prolog_flag(os_argv, List).
argv(List)
Equivalent to args(List), but arguments that are syntactically valid numbers are passed as a number.