Linux File Permissions and Attributes

Understanding file permissions in Linux is essential for any user who wants to use Linux effectively. Fortunately, it's easier than you think.

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[brainplot]

Damn I wasn't aware that a user can delete a file they don't have write permission on as long as they have write permission on the containing folder. That can very well lead to unintended consequences, if you're not aware!
Great video EM!

[rish]

Simple and to the point; this is why I love your videos.

[Codester]

One of my favorite YouTubers, and the quality of your content is ever-increasing. Looking forward to more videos around Linux. Thanks!

[AndrewIsherwood]

How have I never come across file attributes before? Mind. Blown. Thanks for your consistently top quality videos, thoroughly useful and enjoyable!

[Escbarni]

Hey, gotta tell you dude -- I really appreciate your videos. I love how you put everything to as simple terms as possible. Keep up the good work!

[trooperthatsall]

As a sysadmin I always reference your vids when they come out - this video is the best explanation regarding permissions I've come across many thanks. I have to constantly monitor a few servers and I the permissions were screwed up by someone who did a poor job, its taken 3 weeks to put it right - I use the chmod octo method - and have to carefully record and cross check every directory and file with the groups the users/teams had. I wish I had this months back - it was so bad it was causing all sorts of random issues with users - Many thanks for this ~Trooper

[sebastians]

Thank to you, I now find people more engaging and interesting when they're in the bottom right hand corner of my vision.

[justchecking]

I was watching tutorialLinux guy and I was bored but then found this and this playlist is so far the the cleanest and more useful than all

[gregf]

A fantastically good refresher! Been using UNIX and Linux for years and a good few of these had slipped my mind, but it all came flooding back thanks to this nice, concise little tutorial!

[maggot]

I wish everyone would make such a "to the point" format of videos
You are great!

[frankschneider]

Good that you mentioned the directory setting overwriting file permissions. Novice admins often don't get that. But of course you forgot to mention the s-bit and the t-bit. And mentioning capabilities wouldn't have hurt either.

[streyrr]

Permissions seemed intimidating and not very intuitive. I have tried to find some explanations, but they fell short of sticking in my head. Once again, Engineer Man, you present this so much better than any online research I could have dug up. You've helped me in my career more than I'd like to admit. Your channel is just waiting to blow up.

[ZacKoch]

FWIW Linux permissions are much easier than windows ones ;) Liked the video, great idea.

[pixelPlex]

Note with chmod's "symbolic notation" that file permissions can not only be added/removed, but can also be set as well. Below is an example:

# Recursively change directory permissions so that the group can update IntelliJ (within the program itself), and other users don't have access
# to IntelliJ (including running the program).
chmod -R u=rx, g=rwx, o-rwx idea-IC-193.5662.53

[LandonBrainard]

I have to say, this is probably my favorite video so far (although the regex vid is great too). I was pretty well aware of the standard permissions, but file attributes have always been in the back of my mind and I had no idea how to do anything with them. Are attributes part of POSIX?

[capistor]

loved the video... especially the part where you mention ' -s ' attribute... i think this very helpful. didn't know you could actually do that...

[iamlegion]

Awesome.. the add 3 plus 2 plus is a great shortcut

[PTM]

If you are planning to make an advanced version of this tutorial later, please include Sticky bit, suid, sgid.

[MaartenVanDamme]

thanks, another great video. Would you mind making another video on the same topic but include umask, suid, sgid, sticky bit and ACL?

[daviddk]

You are so FREAKING good!!! Thanks a lot, man!