- ext
- clib
- socket.pl -- Network socket (TCP and UDP) library
- uid.pl -- User and group management on Unix systems
- unix.pl -- Unix specific operations
- syslog.pl
- filesex.pl -- Extended operations on files
- uri.pl -- Process URIs
- process.pl -- Create processes and redirect I/O
- time.pl -- Time and alarm library
- sha.pl -- SHA secure hashes
- crypt.pl
- memfile.pl
- uuid.pl -- Universally Unique Identifier (UUID) Library
- hash_stream.pl -- Maintain a hash on a stream
- md5.pl -- MD5 hashes
- streampool.pl -- Input multiplexing
- cgi.pl -- Read CGI parameters
- prolog_stream.pl -- A stream with Prolog callbacks
- udp_broadcast.pl -- A UDP broadcast proxy
- rlimit.pl
- clib
- dup(+FromStream, +ToStream) is det
- Interface to Unix
dup2(), copying the underlying filedescriptor and thus making both streams point to the same underlying object. This is normally used together with fork/1 and pipe/2 to talk to an external program that is designed to communicate using standard I/O.Both FromStream and ToStream either refer to a Prolog stream or an integer descriptor number to refer directly to OS descriptors. See also
demo/pipe.plin the source-distribution of this package.