BLKID(8) BLKID(8) blkid - / blkid --label | --uuid uuid blkid [--no-encoding --garbage-collect --list-one --cache-file ] [--output ] [--match-tag ] [--match-token NAME=value] [...] blkid --probe [--offset ] [--output ] [--size ] [--match-tag ] [--match-types ] [--usages ] [--no-part-details] ... blkid --info [--output format] [--match-tag ] ... blkid libblkid(3). ( swap) (tokens NAME=value) ( LABEL UUID). lsblk(8) lsblk --fs findmnt(8) . lsblk(8) (root) . blkid . blkid libblkid(3). (tokens) . . /proc/partitions . blkid : = NAME=value . blkid ( ). (-p) . wipefs(8) ( ) . KiB (=1024) MiB (=1024*1024) GiB TiB PiB EiB ZiB YiB ( "iB" "K" "KiB") KB (=1000) MB (=1000*1000) GB TB PB EB ZB YB. -c --cache-file _ _ ( CONFIGURATION FILE ). ( ) /dev/null. -d --no-encoding . ^ -M . --output udev . -D --no-part-details ( *PART_ENTRY_) . -g --garbage-collect blkid . -H --hint . . "session_offset=" UDF . -i --info / ( /). 'export' . --probe. -k --list-filesystems RAIDs . -l --list-one --match-token. / ( udev). : Device Mapper EVMS LVM MD . blkid . blkid udev LABEL UUID --match-token. ( mount(8) ) . -L --label --list-one --output device --match-token LABEL=. udev /dev/disk/by-label ( /etc/blkid.conf). . --label udev . blkid(8) e2fsprogs -L -o list. -l -o device -t LABEL= -o list -L. -n --match-types ( ) (). "no" . : blkid --probe --match-types vfat,ext3,ext4 /dev/sda1 vfat ext3 ext4 blkid --probe --match-types nominix /dev/sda1 minix. --probe. -o --output . . -s. : full () value list (--probe --info). lsblk(8). device --label --uuid udev ="" udev ID_FS_ ID_PART_. udev ASCII (hex-escaping) UTF-8 ( ) '_'. ENC . udev ID_FS_AMBIVALENT *ID_PART_ENTRY_ . . export = / ( --info). ^ -M . json JSON. -O --offset ( --probe). --info. -p --probe ( ). ( PTTYPE) ( PART_ENTRY_). libblkid *--probe ( =PART_ENTRY_UUID =PARTUUID). --no-part-details. -s --match-tag () . --match-tag . (tokens) (). --match-tag none . -S --size / ( --probe). -t --match-token = . TYPE LABEL UUID. . -u --usages ( ) "". : filesystem raid crypto other. "no" . : blkid --probe --usages filesystem,other /dev/sda1 ( swap) blkid --probe --usages noraid /dev/sda1 RAIDs. --probe. -U --uuid uuid uuid . --label. -h --help . -V --version . ( --match-token) 0. --match-tag . () 2. 4. (-p) 8. /etc/blkid.conf BLKID_CONF. libblkid: SEND_UEVENT= uevent /dev/disk/by-{label,uuid,partuuid,partlabel}/ LABEL UUID PARTUUID PARTLABEL . "yes". CACHE_FILE=<> . BLKID_FILE. /run/blkid/blkid.tab /etc/blkid.tab /run. EVALUATE=<> LABEL UUID. libblkid "udev" "scan". . "udev,scan". "udev" udev /dev/disk/by-* "scan" /proc/partitions. LIBBLKID_DEBUG=all . blkid Andreas Dilger libblkid Theodore Ts'o Karel Zak. libblkid(3) findfs(8) lsblk(8) wipefs(8) . blkid util-linux . util-linux 2.42.1 2026-05-18 BLKID(8)