this post was submitted on 19 Mar 2024
267 points (97.8% liked)

Linux

48338 readers
403 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago
MODERATORS
 

[Image description:
Screenshot of terminal output:

~ ❯ lsblk
NAME           MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
sda              8:0    1  62.5M  0 disk  
└─topLuks      254:2    0  60.5M  0 crypt 
  └─bottomLuks 254:3    0  44.5M  0 crypt

/end image description]

I had no idea!

If anyone else is curious, it's pretty much what you would expect:

cryptsetup -y -v luksFormat /dev/sda
cryptsetup open /dev/sda topLuks
cryptsetup -y -v luksFormat /dev/mapper/topLuks
cryptsetup open /dev/mapper/topLuks bottomLuks
lsblk

Then you can make a filesystem and mount it:

mkfs.ext4 /dev/mapper/bottomLuks
mount /dev/mapper/bottomLuks ~/mnt/embeddedLuksTest

I've tested putting files on it and then unmounting & re-encrypting it, and the files are indeed still there upon decrypting and re-mounting.

Again, sorry if this is not news to anyone else, but I didn't realise this was possible before, and thought it was very cool when I found it out. Sharing in case other people didn't know and also find it cool :)

you are viewing a single comment's thread
view the rest of the comments
[–] Qkall@lemmy.ml 81 points 8 months ago (3 children)

we really ain't making any jokes on the name of the drives? okay...

[–] maniacal_gaff@lemmy.world 48 points 8 months ago (1 children)

Actually the bottomLuks generates most of the power.

[–] SatyrSack@lemmy.one 25 points 8 months ago

Speed has everything to do with it.

[–] unexposedhazard@discuss.tchncs.de 17 points 8 months ago (1 children)

Well considdering it was posted by a user with the username "communism" i will assume bottomLuks

[–] delirious_owl@discuss.online 12 points 8 months ago (2 children)

Communism doesn't have hierarchy tho

[–] JustEnoughDucks@feddit.nl 8 points 8 months ago

That's very true.

But Marxist-Leninism (Lemmy.ml), the attempt to make communism practical and achievable and bumbling into fascism, does have a hierarchy.

[–] Overshoot2648@lemm.ee 2 points 8 months ago (1 children)

Wouldn't that be Anarchism/ Libertarian Socialism? Communism requires a state which is an implicit hierarchy.

[–] delirious_owl@discuss.online 2 points 8 months ago

No, anarcho-communists build their own systems of governments that are ruled from the bottom, without a hierarchy.

You dont need a hierarchy to have a State that works for the people

[–] communism@lemmy.ml 11 points 8 months ago

Yes, perhaps I should have named them outerLuks and innerLuks... oh well lol