/dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *750.2 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS swap 32.0 GB disk0s2 3: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF 536.9 MB disk0s3 4: Apple_HFS spare 671.1 MB disk0s4 5: Apple_CoreStorage 99.5 GB disk0s5 6: Apple_Boot Boot OS X 650.0 MB disk0s6 7: Apple_CoreStorage 616.3 GB disk0s7 8: Apple_Boot Boot OS X 134.2 MB disk0s8 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: Apple_HFS OS *99.2 GB disk1 /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *616.0 GB disk2 1: EFI 209.7 MB disk2s1 2: ZFS 615.7 GB disk2s2 /dev/disk3 #: TYPE NAME SIZE IDENTIFIER 0: zfs_pool_proxy gjp22 *614.2 GB disk3 /dev/disk4 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *640.1 GB disk4 1: EFI 209.7 MB disk4s1 2: ZFS 639.8 GB disk4s2 /dev/disk5 #: TYPE NAME SIZE IDENTIFIER 0: zfs_pool_proxy zhandy *635.7 GB disk5 1: zfs_filesystem_proxy Pocket Time Machine 85.1 GB disk5s1 /dev/disk7 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *2.0 TB disk7 1: EFI 209.7 MB disk7s1 2: ZFS 2.0 TB disk7s2 /dev/disk8 #: TYPE NAME SIZE IDENTIFIER 0: zfs_pool_proxy tall *2.0 TB disk8 1: zfs_filesystem_proxy backups 62.4 GB disk8s1 2: zfs_filesystem_proxy LaCie d2 Extreme 50.7 GB disk8s1s1 3: zfs_filesystem_proxy 11G 50.7 GB disk8s1s1s1 4: zfs_filesystem_proxy 12A 50.7 GB disk8s1s1s2 5: zfs_filesystem_proxy blocky 54.2 GB disk8s1s2 6: zfs_filesystem_proxy gjp22 376.0 GB disk8s1s3 7: zfs_filesystem_proxy zhandy 478.3 GB disk8s1s4 8: zfs_filesystem_proxy Pocket Time Machine 107.4 GB disk8s1s4s1
file(1) can print details about certain devices in the /dev/ directory (block devices in this example). This helped me to know at a glance the location and revision of my bootloader, UUIDs, filesystem status, which partitions were primaries / logicals, etc.. without running several commands.
See also:
file -s /dev/dm-*
file -s /dev/cciss/*
etc..
Show Sample Output
Shows all block devices in a tree with descruptions of what they are.
`blkid` is an interface to libuuid - it can read Device Mapper, EVMS, LVM, MD, and regular block devices. -c /dev/null - Do not use cached output from /etc/blkid.tab or /etc/blkid/blkid.tab (RHEL) -i - Display I/O Limits (aka I/O topology) information (not available in RHEL) -p - Low-level superblock probing mode (not available in RHEL) Show Sample Output
Another alternative to blkid, lsblk, file -s, cat /proc/paritions, fdisk -l, etc.. Show Sample Output
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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