this post was submitted on 21 Apr 2024
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Linux
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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.
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I already posted this before but a friend did
chmod -R user /usr/bin
and broke every suid and guid bin including sudo lol.Personally have accidentally shadow deleted /home via an incorrect bind mount so I couldn't log into my own user.
I did something similar (that my professor still talks about in class as a cautionary tale)
I ran
chown -R user .*
(intending to target all hidden files in the folder) and for people that don't know.*
also matches..
(..
was/
in this case) which changed the permissions on all files on the system to that user, including sudo.We fixed it by mounting the root of the file system in a docker container which effectively gave us root.
I've also been hit by
.*
matching..
. First of all, I find this really really jarring. It makes sense and doesn't at the same time. I also wonder how to properly only glob the hidden files but I'm too afraid to experiment.