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LEARN ABOUT DEBIAN

sys::utmp

Sys::Utmp(3pm)						User Contributed Perl Documentation					    Sys::Utmp(3pm)

NAME

       Sys::Utmp - Object(ish) Interface to UTMP files.

SYNOPSIS

	 use Sys::Utmp;

	 my $utmp = Sys::Utmp->new();

	 while ( my $utent =  $utmp->getutent() )
	 {
	    if ( $utent->user_process )
	    {
	       print $utent->ut_user,"
";
	    }
	  }

	  $utmp->endutent;

       See also examples/pwho in the distribution directory.

DESCRIPTION

       Sys::Utmp provides a vaguely object oriented interface to the Unix user accounting file ( sometimes /etc/utmp or /var/run/utmp).  Whilst it
       would prefer to use the getutent() function from the systems C libraries it will attempt to provide its own if they are missing.

       This may not be the module that you are looking for - there is a User::Utmp which provides a different procedural interface and may well be
       more complete for your purposes.

   METHODS
       new The constructor of the class.  Arguments may be provided in Key => Value pairs : it currently takes one argument 'Filename' which will
	   set the file which is to be used in place of that defined in _PATH_UTMP.

       getutent
	   Iterates of the records in the utmp file returning a Sys::Utmp::Utent object for each record in turn - the methods that are available
	   on these objects are descrived in the Sys::Utmp::Utent documentation.  If called in a list context it will return a list containing the
	   elements of th Utent entry rather than an object.  If the import flag ':fields' is used then constants defining the indexes into this
	   list will be defined, these are uppercase versions of the methods described in Sys::Utmp::Utent.

       setutent
	   Rewinds the file pointer on the utmp filehandle so repeated searches can be done.

       endutent
	   Closes the file handle on the utmp file.

       utmpname SCALAR filename
	   Sets the file that will be used in place of that defined in _PATH_UTMP.  It is not defined what will happen if this is done between two
	   calls to getutent() - it is recommended that endutent() is called first.

   EXPORT
       No methods or constants are exported by default.

   Exportable constants
       These constants are exportable under the tag ':constants':

	    ACCOUNTING
	    BOOT_TIME
	    DEAD_PROCESS
	    EMPTY
	    INIT_PROCESS
	    LOGIN_PROCESS
	    NEW_TIME
	    OLD_TIME
	    RUN_LVL
	    USER_PROCESS

       These are the values that will be found in the ut_type field of the Sys::Utmp::Utent object.

       These constants are exported under the tag ':fields' :

	    UT_USER
	    UT_ID
	    UT_LINE
	    UT_PID
	    UT_TYPE
	    UT_HOST
	    UT_TIME

       These provide the indexes into the list returned when "getutent" is called in list context.

BUGS

       Probably.  This module has been tested on Linux, Solaris, FreeBSD ,SCO Openserver and SCO UnixWare and found to work on those platforms.
       If you have difficulty building the module or it doesnt behave as expected then please contact the author including if appropriate your
       /usr/include/utmp.h

AUTHOR

       Jonathan Stowe, <jns@gellyfish.com>

LICENCE

       This Software is Copyright Netscalibur UK 2001,
				  Jonathan Stowe 2001-2006

       This Software is published as-is with no warranty express or implied.

       This is free software and can be distributed under the same terms as Perl itself.

SEE ALSO

       perl. Sys::Utmp::Utent

perl v5.14.2							    2006-10-13							    Sys::Utmp(3pm)

Shell Programming and Scripting