Usage:
 fincore [options] file...

Options:
 -J, --json            use JSON output format
 -b, --bytes           print sizes in bytes rather than in human readable format
 -c, --total           produce a grand total
 -n, --noheadings      don't print headings
 -o, --output <list>   output columns
     --output-all      output all columns
 -r, --raw             use raw output format
 -R, --recursive       recursively check all files in directories
 -C, --cachestat       force usage of cachestat syscall

 -h, --help            display this help
 -V, --version         display version

Available output columns:
                  PAGES  file data resident in memory in pages
                   SIZE  size of the file
                   FILE  file name
                    RES  file data resident in memory in bytes
            DIRTY_PAGES  number of dirty pages
                  DIRTY  number of dirty bytes
        WRITEBACK_PAGES  number of pages marked for writeback
              WRITEBACK  number of bytes marked for writeback
          EVICTED_PAGES  number of evicted pages
                EVICTED  number of evicted bytes
 RECENTLY_EVICTED_PAGES  number of recently evicted pages
       RECENTLY_EVICTED  number of recently evicted bytes

For more details see fincore(1).