Linux inodes Explained

What are inodes in Linux? How do they work? What really happens when you type 'ls -l' into the Linux command line?

0:00 Intro
1:47 Directories as filename-inode number pairs
2:30 How are inodes structured?
3:33 inspecting a real inode
3:42 what is a syscall?
4:57 practical inode-related Linux commands
5:24 common inode-related Linux problems and troubleshooting
6:30 how inodes are created in Linux (depends on filesystem)

[bearforceone]

I applied for a job as a Junior RedHat Sysadmin this week and they asked me how I can see the Linux version running on a machine. I knew this by watching your video on regular devops interview questions, it's one of the questions you talked about. Just so you know, your videos are helping people out there in the real world! I am sure this video will also come in handy when actually running live environments. Thanks for doing this! :)

[tutoriaLinux]

0:00 Intro
1:47 Directories as filename-inode number pairs
2:30 How are inodes structured?
3:33 inspecting a real inode
3:42 what is a syscall?
4:57 practical inode-related Linux commands
5:24 common inode-related Linux problems and troubleshooting
6:30 how inodes are created in Linux (depends on filesystem)

[manny]

Great video. Thank you!
Only addition/correction in my opinion is at 2:48. You said the hard links count wasn’t shown with the ls -l command but it IS listed. It’s the second column after the file permissions. Says 1 for the files you listed.

[seannewcomb]

I never knew about this, thanks for the walk through!

[Nagashadow]

Good to know that ZFS has more advantages than whats usually advertised. I knew about zfs and inodes but never connected this together

[vesok]

Thanks, great video! I'd really love it if you made a series on zfs too :D

[fhujf]

I already knew about inodes, but watched the video regardless :)
Thanks for all the videos, especially the Linux administration playlist. I've always been a Windows guy, but a year ago I started watching these, installed Ubuntu on VM and guess what, on Monday I'm starting a job in Unix infrastructure administration :D This channel is where it all began. Can't wait for new challenges ahead.

[wojtspes]

Thanks, dude. Just starting a new year, new me, you know. Learning Unix, stuff.

[Hackenbaker]

Thanks a lot for the easy to consume explanation!!! Easy to understand. Inodes was a question in my past working interview. Now, thanks to you I have a better answer for the next time somebody ask me about this. :)

[Flankymanga]

Huh... every video i see from you shows me how much i have to learn. Thank you for the explanation!

[DimaEvoc]

Thank you! I'm watching this video after a terrible interview ))

[jerweiyeoh]

Just here to drop an appreciation for the explanation!
Stay awesome!

[Matthew-tlng]

Its crazy I just did a phone screen for a company and you touched on 2 of them in this video. Hard/soft links and syscalls.

[qsmfoui]

for my taste this was scratching a little bit on the surface. there is a little more to it to get a better understanding of the filesystem. i wish you would make a video with some visualized hierarchy of how the superblock, group descriptors and inodes work together with the memory blocks. anyways it was a great video

[TheGruselmops]

Thanks Dave, great explanation! I really missed this type of videos!
btw. How do you like BtrFS?

[aleksandrshkraba]

It was great! I was asked about inodes on my previous interview. And unfortunately I have some difficulties with explanation!( Now I can do it))) Thank you!

[martina]

Love these!

Thanks for your great work!

[HarryLowtonIT]

Thank you - Great video and explanation!

[ruiztulio]

Great video man, I'm just playing with zfs and is great so far

[robertbatista]

Can a file have more than 1 soft link or more than 2 hard links? For every additional hard link does the disk storage space go up by the size of the original file?