- 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
- set_user_and_group(+User) is det
- set_user_and_group(+User, +Group) is det
- Set the UID and GID to the User. User is either a UID or a user name. If Group is not specified, the primary group of User is used. If initgroups/2 is available, the resulting group access list of the calling process consists of the registered groups for User and the specified Group.