--- title: "#file-permissions-linux-unix-acls-access-control-lists-security-permissions-chmod-chown-setfacl-getfacl-octal-notation-symbolic-notation-user-permissions-group-permissions-other-permissions-fine-grained-access-control-file-ownership-file-system-security-command-line-operating-systems articles | Hashnode" description: "Explore 30 articles tagged #file-permissions-linux-unix-acls-access-control-lists-security-permissions-chmod-chown-setfacl-getfacl-octal-notation-symbolic-notation-user-permissions-group-permissions-other-permissions-fine-grained-access-control-file-ownership-file-system-security-command-line-operating-systems on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/file-permissions-linux-unix-acls-access-control-lists-security-permissions-chmod-chown-setfacl-getfacl-octal-notation-symbolic-notation-user-permissions-group-permissions-other-permissions-fine-grained-access-control-file-ownership-file-system-security-command-line-operating-systems" --- Tag # #file-permissions-linux-unix-acls-access-control-lists-security-permissions-chmod-chown-setfacl-getfacl-octal-notation-symbolic-notation-user-permissions-group-permissions-other-permissions-fine-grained-access-control-file-ownership-file-system-security-command-line-operating-systems 30 posts · 0 followers [Raquib Reyaz](https://hashnode.com/@Raquibreyaz) · [Dec 25, 2025](https://hashnode.com/posts/linux-file-permissions/694ccbf4dec26f52283aac07) ### [Linux File Permissions: chmod, chown, and Access Control Explained](https://linux-internals.hashnode.dev/linux-file-permissions?utm_source=hashnode&utm_medium=feed) Learn Linux file permissions step-by-step: chmod symbolic & octal modes, chown ownership changes, umask defaults, setuid/setgid/sticky bit. Real examples + 10 min read · [linux-internals.hashnode.dev](https://linux-internals.hashnode.dev/linux-file-permissions?utm_source=hashnode&utm_medium=feed) [Raquib Reyaz](https://hashnode.com/@Raquibreyaz) · [Dec 23, 2025](https://hashnode.com/posts/linux-users-groups-and-others/694a9c1e4d5d69e6e9a0fbc7) ### [Linux Users, Groups and Others](https://linux-internals.hashnode.dev/linux-users-groups-and-others?utm_source=hashnode&utm_medium=feed) Master Linux users, groups, others permissions. Learn chmod, usermod, /etc/passwd, /etc/shadow. Real examples: why "Permission denied" despite rwx? Director 8 min read · [linux-internals.hashnode.dev](https://linux-internals.hashnode.dev/linux-users-groups-and-others?utm_source=hashnode&utm_medium=feed) [Mayank Pandey](https://hashnode.com/@aptmayank) · [Jul 1, 2025](https://hashnode.com/posts/access-control-listsacls/6863ae808409171ca6283fd7) ### [ACCESS CONTROL LISTS(ACLs)](https://access-control-list.hashnode.dev/access-control-listsacls?utm_source=hashnode&utm_medium=feed) Access Control Lists (ACLs) are a fundamental method used in computer systems, networking, and file management to define who or what is allowed to access resources and what operations are permitted on those resources. 🔐 What Is an Access Control Li... 3 min read · [access-control-list.hashnode.dev](https://access-control-list.hashnode.dev/access-control-listsacls?utm_source=hashnode&utm_medium=feed) [Sonica Sonawane](https://hashnode.com/@Sonica-sonawane) · [Apr 25, 2025](https://hashnode.com/posts/understanding-special-permissions-in-linux-suid-sgid-and-sticky-bit/680b8cebd37aa39e7ab65ed8) ### [Understanding Special Permissions in Linux: SUID, SGID & Sticky Bit](https://linux-simplified-learn-explore-master.hashnode.dev/understanding-special-permissions-in-linux-suid-sgid-and-sticky-bit?utm_source=hashnode&utm_medium=feed) Learn about special Linux permissions: SUID, SGID, and Sticky Bit, and how they can enhance file control and security 2 min read · [linux-simplified-learn-explore-master.hashnode.dev](https://linux-simplified-learn-explore-master.hashnode.dev/understanding-special-permissions-in-linux-suid-sgid-and-sticky-bit?utm_source=hashnode&utm_medium=feed) [shubham naidu](https://hashnode.com/@shubhamnaidu) · [Apr 15, 2025](https://hashnode.com/posts/devops-for-beginners-linux-basics-you-can-understand/67fe9c4b33cc6e8a83af8733) ### [DevOps for Beginners: Linux Basics You Can Understand](https://shubhamnaidublog.com/devops-for-beginners-linux-basics-you-can-understand?utm_source=hashnode&utm_medium=feed) Hey there! 👋If you've ever felt like Linux is some scary dark screen full of hacker code, don't worry — you’re not alone. Today, we're diving into a few beginner-friendly Linux tasks that are actually super fun and powerful. And yes, you can do this... 4 min read · [shubhamnaidublog.com](https://shubhamnaidublog.com/devops-for-beginners-linux-basics-you-can-understand?utm_source=hashnode&utm_medium=feed) [Rohit Pagote](https://hashnode.com/@rohitpagote) · [Jan 9, 2025](https://hashnode.com/posts/security-and-file-permissions-in-linux/677f6a2a63a5dd3a91033dee) ### [06 - Security and File Permissions in Linux](https://rohitpagote.hashnode.dev/security-and-file-permissions-in-linux?utm_source=hashnode&utm_medium=feed) Learn about Linux accounts, user management, file permissions, and ownership to secure and manage your Linux system effectively 12 min read · [rohitpagote.hashnode.dev](https://rohitpagote.hashnode.dev/security-and-file-permissions-in-linux?utm_source=hashnode&utm_medium=feed) [Pratul's BlogArea](https://hashnode.com/@pratul233) · [Dec 23, 2024](https://hashnode.com/posts/getting-started-with-shell-scripting/676996f088c3d7b0b3857ab3) ### [Getting Started with Shell Scripting](https://myspace233.hashnode.dev/getting-started-with-shell-scripting?utm_source=hashnode&utm_medium=feed) Deep dive into Shell Scripting by Pratul Patel 14 min read · [myspace233.hashnode.dev](https://myspace233.hashnode.dev/getting-started-with-shell-scripting?utm_source=hashnode&utm_medium=feed) [Shikhar Shukla](https://hashnode.com/@shikhar999) · [Nov 27, 2024](https://hashnode.com/posts/linux-basics-a-comprehensive-one-line-guide-to-essential-concepts/6747384777fa6f7bc02dd4ce) ### [Linux Basics: A Comprehensive One-Line Guide to Essential Concepts](https://shikhar99.hashnode.dev/linux-basics-a-comprehensive-one-line-guide-to-essential-concepts?utm_source=hashnode&utm_medium=feed) Linux is a cornerstone of the IT world, powering servers, desktops, and embedded devices. Whether you're a beginner or brushing up, here's a concise guide covering key Linux concepts with commands to get started. 1. What is Linux? Linux is an open-s... 2 min read · [shikhar99.hashnode.dev](https://shikhar99.hashnode.dev/linux-basics-a-comprehensive-one-line-guide-to-essential-concepts?utm_source=hashnode&utm_medium=feed) [Mihir Suratwala](https://hashnode.com/@Mihir10) · [Nov 23, 2024](https://hashnode.com/posts/linux-access-control-lists-simplifying-permissions-management/67423f126ae024475f6e2150) ### [Linux Access Control Lists: Simplifying Permissions Management](https://mihirsuratwala.hashnode.dev/linux-access-control-lists-simplifying-permissions-management?utm_source=hashnode&utm_medium=feed) Learn how Linux Access Control Lists (ACLs) simplify managing permissions for users and groups, enhancing security and flexibility 2 min read · [mihirsuratwala.hashnode.dev](https://mihirsuratwala.hashnode.dev/linux-access-control-lists-simplifying-permissions-management?utm_source=hashnode&utm_medium=feed) [Yusuf Isah](https://hashnode.com/@yusbuntu) · [Sep 5, 2024](https://hashnode.com/posts/chapter-5-linux-file-permissions-and-ownership/66d9dc0dcd660cc12c834916) ### [Chapter 5 - Linux File Permissions and Ownership](https://yuscode.hashnode.dev/chapter-5-linux-file-permissions-and-ownership?utm_source=hashnode&utm_medium=feed) Introduction In Linux, permissions and ownership play a crucial role in controlling access to files and directories. Understanding permissions and ownership is essential for maintaining security and organization in your Linux system. In this chapter,... 3 min read · [yuscode.hashnode.dev](https://yuscode.hashnode.dev/chapter-5-linux-file-permissions-and-ownership?utm_source=hashnode&utm_medium=feed)