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FCTL(1)				 LAM COMMANDS			       FCTL(1)

NAME
       fctl - Control a LAM remote file daemon.

SYNTAX
       fctl [-hS] [-s <descno>] <nodes> [<newdir>]

OPTIONS
       -h	     Print the command help menu.

       -S	     Sweep out all but the standard filed descriptors.

       -s <descno>   Sweep out the given filed descriptor.

       <nodes>	     Direct command to filed on these nodes.

       <newdir>	     Change to new working directory.

DESCRIPTION
       Most MPI users will probably not need to use the fctl command; see lam‐
       clean(1).  This command is only installed  if  LAM/MPI  was  configured
       with the --with-trillium switch.

       The  fctl command controls important file daemon (filed) attributes and
       support features.  With no options, fctl reports	 the  current  working
       directory  that	is prepended to all partial pathnames on rfopen(2).  A
       file name on the command line becomes the new working directory.

       Another important role of fctl is cleaning the debris that can form  in
       filed  in certain application crashes or bugs.  Any file descriptor can
       be swept clean by indicating its handle (number) with  the  -c  option.
       If  desired,  all descriptors, save stdio (0, 1, 2), can be cleaned and
       filed effectively reset with the -S option.

EXAMPLE
       fctl h data/set1
	   Change current working directory as indicated.

       fctl h -s 4
	   Close and remove filed descriptor 4.

SEE ALSO
       fstate(1), lamclean(1)

LAM 7.1.2			  March, 2006			       FCTL(1)

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