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							|  |  |  | :- use_module(library(system)). | 
					
						
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							|  |  |  | :- object(system, | 
					
						
							|  |  |  | 	implements(systemp)). | 
					
						
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							|  |  |  | 	:- info([ | 
					
						
							|  |  |  | 		version is 1.0, | 
					
						
							|  |  |  | 		author is 'Paulo Moura', | 
					
						
							|  |  |  | 		date is 2004/6/5, | 
					
						
							|  |  |  | 		comment is 'Operating system interface for Amzi! Prolog.']). | 
					
						
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							|  |  |  | 	make_directory(Directory) :- | 
					
						
							|  |  |  | 		{mkdir(Directory)}. | 
					
						
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							|  |  |  | 	delete_directory(Directory) :- | 
					
						
							|  |  |  | 		{rmdir(Directory, 0)}. | 
					
						
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							|  |  |  | 	change_directory(Directory) :- | 
					
						
							|  |  |  | 		{chdir(Directory)}. | 
					
						
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							|  |  |  | 	working_directory(Directory) :- | 
					
						
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										 |  |  | 		{curdir(Directory)}. | 
					
						
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							|  |  |  | 	directory_exists(Directory) :- | 
					
						
							|  |  |  | 		{fail}. | 
					
						
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							|  |  |  | 	directory_files(Directory, Files) :- | 
					
						
							|  |  |  | 		{directory_files(Directory, Files)}. | 
					
						
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							|  |  |  | 	absolute_file_name(File) :- | 
					
						
							|  |  |  | 		{fail}. | 
					
						
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							|  |  |  | 	absolute_file_name(File, Full) :- | 
					
						
							|  |  |  | 		{fail}. | 
					
						
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							|  |  |  | 	file_exists(File) :- | 
					
						
							|  |  |  | 		{file_exists(File)}. | 
					
						
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							|  |  |  | 	file_modification_time(File, Time) :- | 
					
						
							|  |  |  | 		{stat(File, _, _, Time, _, _, _, _, _)}. | 
					
						
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							|  |  |  | 	file_size(File, Size) :- | 
					
						
							|  |  |  | 		{stat(File, _, _, _, Size, _, _, _, _)}. | 
					
						
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							|  |  |  | 	file_permission(File, Permission) :- | 
					
						
							|  |  |  | 		{stat(File, _, _, _, _, Permission, _, _, _)}. | 
					
						
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							|  |  |  | 	delete_file(File) :- | 
					
						
							|  |  |  | 		{delfile(File, 0)}. | 
					
						
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							|  |  |  | 	rename_file(Old, New) :- | 
					
						
							|  |  |  | 		{rename(Old, New)}. | 
					
						
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							|  |  |  | 	symbolic_link(File, Target) :- | 
					
						
							|  |  |  | 		{fail}. | 
					
						
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							|  |  |  | 	environment_variable(Variable, Value) :- | 
					
						
							|  |  |  | 		{get_env_var(Variable, Value)}. | 
					
						
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							|  |  |  | 	set_environment_variable(Variable, Value) :- | 
					
						
							|  |  |  | 		{fail}. | 
					
						
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							|  |  |  | 	date_time(Year, Month, Day, Hours, Mins, Secs, 0) :- | 
					
						
							|  |  |  | 		{date(Year, Month, Day), time(Hours, Mins, Secs)}. | 
					
						
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							|  |  |  | 	convert_time(Time, Year, Month, Day, Hours, Mins, Secs, Milisecs) :- | 
					
						
							|  |  |  | 		{fail}. | 
					
						
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							|  |  |  | 	cpu_time(Time) :- | 
					
						
							|  |  |  | 		{Time is cputime}. | 
					
						
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							|  |  |  | 	host_name(Name) :- | 
					
						
							|  |  |  | 		{current_host(Name)}. | 
					
						
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							|  |  |  | :- end_object. |