I am trying to run a Perl script that changes MCNP ACE xsdir library to SERPENT xsdata libray : $................$

if $($$#ARGV $!=0)$

$\{$

printf$("$

Usage:

xsdirconvert.pl input $>>$ output

$")$;

printf$("$Where: input is MCNP xsdir file

$")$;

printf$("$ output is Serpent directory file

$")$;

exit;

$\}$

# Check that input file exists:

if $(!(-$e $"$$ARGV$[0]"))$

$\{$

printf$("$

MCNP xsdir file $\backslash "\%$s$\backslash "$ does not exist.

$",$ $ARGV$[0])$;

exit;

$\}.....................$

My input file is sss$\_$jeff$311$u$.$xsdir with the following lines:

~$/$home$/$Serpent$2/$Serpent$2$xsdata$/$jeff$311/$acedata

atomic weight ratios

$10010\mathrm{.}999167$

$10021\mathrm{.}996800$

$10032\mathrm{.}989596$

$2.......$etc

$1001\mathrm{.}03$c: ACE file $"$~$/$home$/$Serpent$2/$Serpent$2$xsdata$/$jeff$311/$acedata$/1001$JEF$311.$ace" does not exist.

$1001\mathrm{.}06$c: ACE file $"$~$/$home$/$Serpent$2/$Serpent$2$xsdata$/$jeff$311/$acedata$/1001$JEF$311.$ace" does not exist.

$1001\mathrm{.}09$c: ACE file $"$~$/$home$/$Serpent$2/$Serpent$2$xsdata$/$jeff$311/$acedata$/1001$JEF$311.$ace" does not exist.

The ACEDATA folder does exists with the libary files