Stuck on a permission denied error in Linux? Discover how to inspect your file permissions and adjust them using the chmod command. In this episode of the RHEL Field Guide, host Scott McBrien breaks down how Linux file permissions work for users, groups, and others. He explains how to decipher the 10-character string from an ls -l command and walks through the octal math behind settings like 644 and 777. Learn why opening up world-writable permissions is a security risk and how to target permissions accurately to your intended audience.
00:00 Introduction to Linux file permissions
00:13 Using the ls -l long listing command
01:17 Explaining user, group, and others fields
3:10 Understanding private groups on Red Hat distributions
05:42 Why running chmod 777 is a bad idea
07:37 The octal number math behind the chmod command
10:03 Troubleshooting execution and fixing permission denied errors
Explore the foundations of Red Hat Enterprise Linux system management:
💻 Deep dive into permissions with Into the Terminal 185 → https://www.youtube.com/watch?v=oQRTSMxySpM
🖥️ Watch Into the Terminal episode 02 on permissions → https://www.youtube.com/watch?v=Y-NrJkcNb6U
🐧 Manage your enterprise OS infrastructure → https://www.redhat.com/en/technologies/linux-platforms/enterprise-linux
📖 Find more Linux file permissions tips and tricks in our blog → https://www.redhat.com/en/blog/introduction-chmod
#RHEL #LinuxPermissions #LinuxTips
