Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [lsblk]

118 questions
12
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3 answers

Can I shorten this filter, that finds disk sizes over 100G?

My goal is to get the disks greater than 100G from lsblk. I have it working, but it's awkward. I'm pretty sure it can be shortened. Either by using something totally different than lsblk, or maybe I can filter human readable numbers directly with…
chalybeum
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11
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4 answers

Why does writing random data using dd result in disk partitions?

Prior to running the dd command, the command lsblk returned the output below: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 931.5G 0 disk The command dd if=/dev/urandom of=/dev/sda conv=fsync…
Motivated
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2 answers

How do I tell which partition I booted from?

Is there a way to know which partition you actually booted from? fdisk -l reveals a "Boot" column that I definitely don't have on my NVME. Is this just legacy information? Device Boot Start End Sectors Size Id Type /dev/sda1 * …
celvro
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7
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2 answers

Make lsblk list devices by-id

I'm constantly having the situation where I want to correlate the output of lsblk which prints devices in a tree with their name in the scheme of /dev/sdXY with the drives /dev/disk/by-id/ names.
Rovanion
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6
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4 answers

How to capture all disks that don’t have a file system

I want to capture all disks that do not have a filesystem ( all disks that mkfs not runs on them ) I tried the below, but still gives the OS ( sda ). What is the best approach with lsblk or other command to capture all disks that are without…
yael
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6
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1 answer

Why is usb-drive not visible with `lsblk` after having been ejected from Thunar?

If I put a USB-drive in, it will automount. I can see it with lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdb 8:16 1 7,5G 0 disk └─sdb1 8:17 1 7,5G 0 part /media/user/usb-drive If I unmount it with umount umount…
PetaspeedBeaver
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5
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3 answers

bash + how to compare arg to one of the disks in linux machine

I can capture the disk devices of my Linux machine with the following command: lsblk -lnb | numfmt --to=iec --field=4 | grep disk | awk '{print $1}' sda sdb sdc sdd In my bash script I used the line below to test if the script's argument matches…
yael
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5
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3 answers

Iterate lines of string variable in bash

I have a script where I want to list USB devices using the command lsblk. The command: $ lsblk -o NAME,TRAN,VENDOR,MODEL | grep usb which results in sdb usb Kingston DataTraveler 2.0 sdc usb Kingston DT 101 G2 I want to save the result…
schrodingerscatcuriosity
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5
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4 answers

lsblk + capture only the disks

I want to capture only the disks from lsblk as showing here fd0 also appears in spite its not really disk for use in this case we can just do lsblk | grep disk | grep -v fd0 but maybe we missed some other devices that need to filter them by grep…
yael
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5
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2 answers

Can i list unmounted drives without fdisk or lsblk?

I have an Inteno dg200 Router running some Iopsys linux version (kernel 3.14 or so, I believe) I've had some trouble getting a fileshare running using the USB ports and my external harddrive. The system supports it. But no matter what I put in, it…
rasmus91
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1 answer

Is there a scriptable way to identify the nth partition of a disk?

Suppose I have a disk located at /dev/DISK_NAME. I'm curious if there is a command to find the nth partition of this disk. It seems like this sort of thing should be possible with lsblk. The best I can come up with is: lsblk -nlpo NAME,TYPE…
Brian Fitzpatrick
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4
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1 answer

How to set a disk's (not partition) LABEL?

I've been searching around, and can't find a clear answer, or I find that the answer is 'no' when my system shows me otherwise. I'm running Arch Linux, and while attaching new HDD into a ZFS pool I noticed that my main SSD system drive has a LABEL…
Lockszmith
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3 answers

Do all disks devices in my HW machines start with - sd?

in my bash script I use the syntax lsblk | grep sd in order to capture all disk in my HW machines ( not include flash card or rom ) I just worry that some disk device name will be diff from sd , and I will missed these disks is it possible ? lsblk…
yael
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0 answers

Inaccessible drive with the message: unknown filesystem type '(null)'

Short story: A disk with partitions sdb1-sdb4 and filetype ext4 now shows up as sdb with no file type. While trying to mount sdb I get the messages: mount: /dev/sdb is write-protected, mounting read-only mount: unknown filesystem type '(null)' I…
Aunt Jemima
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How does lsblk obtain sector size?

My disk is sda. There is the size file /sys/dev/block/8:0/size. Its unit is sectors. When I run strace lsblk I can see it reading this file. But how does lsblk get the sector size to later show the total disk size in bytes? Because I cannot see…
zomega
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