FINCORE(1)			 User Commands			    FINCORE(1)

NAME
       fincore - count pages of file contents in core

SYNOPSIS
       fincore [options] file...

DESCRIPTION
       fincore counts pages of file contents being resident in memory (in
       core), and reports the numbers. If an error occurs during counting,
       then an error message is printed to the stderr and fincore continues
       processing the rest of files listed in a command line.

       The default output is subject to change. So whenever possible, you
       should avoid using default outputs in your scripts. Always explicitly
       define expected columns by using --output columns-list in environments
       where a stable output is required.

OPTIONS
       -n, --noheadings
	   Do not print a header line in status output.

       -b, --bytes
	   Print the sizes in bytes rather than in a human-readable format.

	   By default, the unit, sizes are expressed in, is byte, and unit
	   prefixes are in power of 2^10 (1024). Abbreviations of symbols are
	   exhibited truncated in order to reach a better readability, by
	   exhibiting alone the first letter of them; examples: "1 KiB" and "1
	   MiB" are respectively exhibited as "1 K" and "1 M", then omitting
	   on purpose the mention "iB", which is part of these abbreviations.

       -o, --output list
	   Define output columns. See the --help output to get a list of the
	   currently supported columns. The default list of columns may be
	   extended if list is specified in the format +list.

       --output-all
	   Output all available columns.

       -r, --raw
	   Produce output in raw format. All potentially unsafe characters are
	   hex-escaped (\x<code>).

       -J, --json
	   Use JSON output format.

       -h, --help
	   Display help text and exit.

       -V, --version
	   Display version and exit.

AUTHORS
       Masatake YAMATO <yamato@redhat.com>

SEE ALSO
       mincore(2), getpagesize(2), getconf(1p) cachestat(2)

REPORTING BUGS
       For bug reports, use the issue tracker
       <https://github.com/util-linux/util-linux/issues>.

AVAILABILITY
       The fincore command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.41.2		  2025-09-22			    FINCORE(1)