10.23 Operating System Utilities—library(system)

This package contains utilities for invoking services from the operating system that does not fit elsewhere.

Exported predicates:

Unifies the current date and time as a UNIX timestamp with When.
Unifies Datime with the current date and time as a datime/6 record of the form datime(Year,Month,Day,Hour,Min,Sec). All fields are integers.
Convert a time stamp, as obtained by now/1, to a datime/6 record. Can be used in both directions.
Puts the SICStus Prolog process asleep for Second seconds, where Seconds should be a non-negative number.
environ(?Var, ?Value)
Var is the name of an environment variable, and Value is its value. Both are atoms. Can be used to enumerate all current environment variables.

Send feedback on this subject.