blkid: invalid option -- '-' blkid from util-linux 2.27.1 (libblkid 2.27.0, 02-Nov-2015) Usage: blkid -L <label> | -U <uuid> blkid [-c <file>] [-ghlLv] [-o <format>] [-s <tag>] [-t <token>] [<dev> ...] blkid -p [-s <tag>] [-O <offset>] [-S <size>] [-o <format>] <dev> ... blkid -i [-s <tag>] [-o <format>] <dev> ... Options: -c <file> read from <file> instead of reading from the default cache file (-c /dev/null means no cache) -d don't encode non-printing characters -h print this usage message and exit -g garbage collect the blkid cache -o <format> output format; can be one of: value, device, export or full; (default: full) -k list all known filesystems/RAIDs and exit -s <tag> show specified tag(s) (default show all tags) -t <token> find device with a specific token (NAME=value pair) -l look up only first device with token specified by -t -L <label> convert LABEL to device name -U <uuid> convert UUID to device name -V print version and exit <dev> specify device(s) to probe (default: all devices) Low-level probing options: -p low-level superblocks probing (bypass cache) -i gather information about I/O limits -S <size> overwrite device size -O <offset> probe at the given offset -u <list> filter by "usage" (e.g. -u filesystem,raid) -n <list> filter by filesystem type (e.g. -n vfat,ext3)

blkid from util-linux 2.27.1 (libblkid 2.27.0, 02-Nov-2015) Usage: blkid -L <label> | -U <uuid> blkid [-c <file>] [-ghlLv] [-o <format>] [-s <tag>] [-t <token>] [<dev> ...] blkid -p [-s <tag>] [-O <offset>] [-S <size>] [-o <format>] <dev> ... blkid -i [-s <tag>] [-o <format>] <dev> ... Options: -c <file> read from <file> instead of reading from the default cache file (-c /dev/null means no cache) -d don't encode non-printing characters -h print this usage message and exit -g garbage collect the blkid cache -o <format> output format; can be one of: value, device, export or full; (default: full) -k list all known filesystems/RAIDs and exit -s <tag> show specified tag(s) (default show all tags) -t <token> find device with a specific token (NAME=value pair) -l look up only first device with token specified by -t -L <label> convert LABEL to device name -U <uuid> convert UUID to device name -V print version and exit <dev> specify device(s) to probe (default: all devices) Low-level probing options: -p low-level superblocks probing (bypass cache) -i gather information about I/O limits -S <size> overwrite device size -O <offset> probe at the given offset -u <list> filter by "usage" (e.g. -u filesystem,raid) -n <list> filter by filesystem type (e.g. -n vfat,ext3)