list block devices

sudo lsblk -o name,type,fstype,label,partlabel,model,mountpoint,size
Shows all block devices in a tree with descruptions of what they are.

2
By: bugmenot
2018-04-25 00:16:39

These Might Interest You

  • It's common to want to split up large files and the usual method is to use split(1). If you have a 10GiB file, you'll need 10GiB of free space. Then the OS has to read 10GiB and write 10GiB (usually on the same filesystem). This takes AGES. . The command uses a set of loop block devices to create fake chunks, but without making any changes to the file. This means the file splitting is nearly instantaneous. The example creates a 1GiB file, then splits it into 16 x 64MiB chunks (/dev/loop0 .. loop15). . Note: This isn't a drop-in replacement for using split. The results are block devices. tar and zip won't do what you expect when given block devices. . These commands will work: hexdump /dev/loop4 . gzip -9 < /dev/loop6 > part6.gz . cat /dev/loop10 > /media/usb/part10.bin Show Sample Output


    5
    FILE=file_name; CHUNK=$((64*1024*1024)); SIZE=$(stat -c "%s" $FILE); for ((i=0; i < $SIZE; i+=$CHUNK)); do losetup --find --show --offset=$i --sizelimit=$CHUNK $FILE; done
    flatcap · 2014-10-03 13:18:19 2
  • This command will use the fdisk utility to find all block devices on your system, and overwrite them with data from the /dev/urandom non-blocking random number generator. CAUTION: This will irrevocably erase EVERY SINGLE physical block storage device visible to the fdisk utility, including plugged USB devices, RAID sets, LVM, etc. Show Sample Output


    1
    for i in `sudo /sbin/fdisk -l |grep Disk |grep dev |awk '{ print $2 }' |sed s/://g` ; do sudo /usr/bin/dd if=/dev/urandom of=$i bs=8M & done
    aimana007 · 2014-03-16 12:04:59 0
  • eg: VBoxManage internalcommands createrawvmdk -filename ~/.VBox_sdc.vmdk -rawdisk /dev/sdc In order to start virtual box using block devices, ( Or to boot from it) run as ROOT sudo VirtualBox Then add & select the vmdk file as a device. At last Start the virtual box. - This cmd needs to run once for a device. - See command 8936 to run with out using ROOT power and easy handling of Virtual m/c


    0
    VBoxManage internalcommands createrawvmdk -filename [path/to/file/name.vmdk] -rawdisk /dev/[block_device]
    totti · 2011-08-19 14:26:22 0
  • 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


    24
    file -s /dev/sd*
    mhs · 2010-12-28 09:56:03 0

What do you think?

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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