Re: lsblk "include" option?

[Karel Zak <kzak@redhat.com>]

On Fri, Jun 15, 2012 at 10:09:16AM -0300, Marcos Felipe Rasia de Mello wrote:
> lsblk has an "exclude" (-e, --exclude) option. I wonder if would be
> possible to add an "include" option to tell it to show *only*
> specified major number devices. Like
> 
> lsblk -i 8

 Implemented (--include, -I)

> to only print major number 8 devices.

 note that the filters (--exclude and --include) are applied to
 top-level devices only. For example:

 $ lsblk --include 8
 NAME   MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
 sda      8:0    0 149.1G  0 disk  
 ├─sda1   8:1    0  1000M  0 disk  /boot/efi
 ├─sda2   8:2    0     2G  0 disk  /boot
 ├─sda3   8:3    0   9.7G  0 disk  [SWAP]
 ├─sda4   8:4    0  34.2G  0 disk  /
 ├─sda5   8:5    0  63.2G  0 disk  /home
 └─sda6   8:6    0  39.1G  0 disk  
   └─luks-10d813de-fa82-4f67-a86c-23d5d0e7c30e (dm-0)
          253:0    0  39.1G  0 crypt /home/kzak


I have a little changed --all option, it's not mutually exclusive to
--include and --exclude anymore. The idea is to print all devices
including empty devices (empty devices are ignored by default), for
example:

$ lsblk --all --include 7
NAME  MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0   7:0    0       0 loop 
loop1   7:1    0       0 loop 
loop2   7:2    0       0 loop 
loop3   7:3    0       0 loop 
loop4   7:4    0       0 loop 
loop5   7:5    0       0 loop 
loop6   7:6    0       0 loop 
loop7   7:7    0       0 loop 


    Karel

-- 
 Karel Zak  <kzak@redhat.com>
 http://karelzak.blogspot.com