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sysopen(MAINFEED, $main_file, O_RDONLY | O_LARGEFILE) or die "Canno +t open main feed file $main_file";
grep AR2 mnttab ... grep AR2 vfstab /dev/vx/dsk/optdg/AR2 /dev/vx/rdsk/optdg/AR2 /AR2 vxfs 1 + yes -