Q: ${NANO_TOOLS}/mtree-dedup.awk permission dined
A:
I'm betting /home is mounted with noexec and nosuid set.
default.sh 
 cat ${NANO_METALOG}.pre | ${NANO_TOOLS}/mtree-dedup.awk | \
 cat ${NANO_METALOG}.pre | /usr/home/cpfong/bin/mtree-dedup.awk

1 cp this mtree to ~cpfong/bin
2 vi default.sh