HARDLINK(1) HARDLINK(1) hardlink - hardlink [] |... hardlink (hardlinks) (copy-on-write clones) . hardlink . . memcmp . ( SHA256) . "intro" (32 ) . /. "intro" . -c --content . -pot. -b --io-size read(2) sendfile(2) . KiB MiB . "iB" "K" "KiB". 8KiB memcmp 1MiB . memcmp / . . -d --respect-dir . ( hardlink). hardlink --respect-dir /foo /bar /foo/some/file /bar/some/file /bar/other/file. --respect-name ( ). -f --respect-name () . -f hardlink . -F --prioritize-trees . hardlink foo/ bar/ bar/ foo/. -i --include _ . --exclude . --exclude . -l --list-duplicates 16 . -m --maximize . -M --minimize . --mount ( ). -n --dry-run . -o --ignore-owner ( ). . -O --keep-oldest ( ). . --maximize --minimize . -p --ignore-mode . . -q --quiet . -r --cache-size . memcmp ( --io-size) . . 10MiB. --reflink[=] ( reflinks) . reflink . --ignore-owner --ignore-mode. --skip-reflinks . never always auto. auto hardlink reflinks BTRFS XFS ZFS reflink . always reflinks . --skip-reflinks . --reflink . -s --minimum-size . 1 . KiB (=1024) MiB (=1024*1024) GiB TiB PiB EiB ZiB YiB ( "iB" "K" "KiB"). -S --maximum-size . 0 0 . KiB (=1024) MiB (=1024*1024) GiB TiB PiB EiB ZiB YiB ( "iB" "K" "KiB"). -t --ignore-time . . -v --verbose . . . -x --exclude _ . . --exclude-subtree _ . . -X --respect-xattrs . -y --method . sha256 sha1 crc32c memcmp. sha256 memcmp (Linux Crypto API) . (zero-copy) . -z --zero NUL ( -l). -h --help . -V --version . hardlink . ULFILEEQ_DEBUG=all . hardlink -f . hardlink . hardlink . . hardlink . . hardlink . hardlink. Jakub Jelinek Fedora util-linux v2.34 v2.36. Debian Julian Andres Klode. . hardlink util-linux . util-linux 2.42.1 2026-05-18 HARDLINK(1)