finding hard links / hard link count in file systems

link column (second column) in ls -l output (hard link count):
a directory will always have a minimum of 2 links.  One for the directory itself and one for the . (current directory) inside the directory.
any additional subdirectories directly under the directory count as an addition link for the directory because of the .. (parent) directory entries inside each subdirectory.

to find hard links:
ncheck -F vxfs /dev/vg00/lvol6 | sort -n | awk '$1==prev{print last;print $0}{prev=$1;last=$0}'

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