# lsattr -a syshub

----i--------e-- syshub

How can I delete this?

Also: Don’t add attributes to passwd or shadow – this is a bad idea. It adds nothing to security – in fact, by preventing users from changing their passwords, it actively reduces security. Interesting that one small article can get so much wrong.

Also wrong about creating symlinks. I’ve not checked every bit of info, but he frankly doesn’t knwo what he’s talking about

There is one point I have a further question about:

Your elaboration on the “i” attribute says “no execution”

I could not find this mentioned in the man pages at https://linux.die.net/man/1/chattr

Also, I tried to run an immutable (albeit executable) script on my Linux workstation, and it works just fine.

Is it different on your system?

I believe executable files would still be executable, even if set immutable, do you agree?

It indicates that the file is using extents for mapping the blocks on disk. Extents is file system dependent. You’re most likely using ext4. It may not be removed using chattr. To know more about extent, see the wikipedia page for extent(filesystem)