How to output only dev names and types in lsblk?

Question

I intend to get a list of all partitions with their corresponding types but arranged in the proper tree order.

This is what I get with lsblk -o NAME,TYPE -i

sda             disk
|-sda1          part
|-sda2          part
|-sda3          part
| |-2cl-root    lvm
| |-2cl-swap    lvm
| |-2cl-home    lvm
| |-2cl-data2   lvm
| `-2cl-data4   lvm
|-sda4          part
| |-1cl00-data3 lvm
|   |-asf1      lvm
|   `-asf2      lvm  
`-sda5          part
sdb             disk
`-sdb1          part
  `-md126       raid1
sdc             disk
`-sdc1          part
  `-md126       raid1
sdd             disk
`-sdd1          part
  `-md127       raid0
    `-3-data6   lvm
sde             disk
`-sde1          part
  `-md127       raid0
    `-3-data6   lvm
sr0             rom

But I want it to display this way

sda             disk
sda1            part
sda2            part
sda3            part
2cl-root        lvm
2cl-swap        lvm
2cl-home        lvm
2cl-data2       lvm
2cl-data4       lvm
sda4            part
1cl00-data3     lvm
asf1            lvm
asf2            lvm  
sda5            part
sdb             disk
sdb1            part
md126           raid1
sdc             disk
sdc1            part
md126           raid1
sdd             disk
sdd1            part
md127           raid0
3-data6         lvm
sde             disk
sde1            part
md127           raid0
3-data6         lvm
sr0             rom

I tried with -s -l option, but the results became much weirder. How do I format it properly, but still get the correct order as the tree? I would not mind if there is only 1 space between name and type.

Eduardo Trápani · Accepted Answer · 2020-05-25T00:20:56.473

2

This should do it:

lsblk -o NAME,TYPE -n -i -r

If you cannot ask lsblk to format the output as you want, you can pipe it and change it.

For example, if the tab is really important:

lsblk -o NAME,TYPE -n -i -r | tr ' ' '\t'

edited May 25 '20 at 00:20

answered May 24 '20 at 22:53

Eduardo Trápani

12,834

Thanks for the response, however, I did not get the correct order. Ex. under sde we have sde1. – Jones G May 24 '20 at 23:03
@JonesG there seems to be no differences in the order in your question. And cut will only clean up the output, the order does not change. If lsblk -r lists them right, so will the pipe through cut. – Eduardo Trápani May 24 '20 at 23:18
I was wrong with sde and sde1. In my question, if you look at sda3 it is followed by several sub partitions, then sda4. With lsblk -r sda3 is followed by sda4 – Jones G May 25 '20 at 00:01
ok, I updated the answer. – Eduardo Trápani May 25 '20 at 00:21
there is a bug in lsblk -r in my version that is why I am getting a wrong order, it was fixed in 2.35.2. – Jones G May 28 '20 at 23:56
Who would've thought? Thanks for sharing the info. – Eduardo Trápani May 29 '20 at 00:16

How to output only dev names and types in lsblk?

1 Answers1