https://mmb198.github.io/en/tags/linux/ Recent content in linux on mmb198 blog site Hugo -- gohugo.io en-au mmb198 Tue, 07 May 2024 19:47:57 +0800 https://mmb198.github.io/en/posts/ca_module4/ Tue, 07 May 2024 19:47:57 +0800 https://mmb198.github.io/en/posts/ca_module4/ chmod numeric chmod (change mode) is a command in Linux and other Unix-like operating systems that allows you to change the permissions (read, write, execute) of files and directories. In Linux, permissions are represented by three sets of characters: user (owner), group, and others. Each set consists of three characters representing the read (r), write (w), and execute (x) permissions. These permissions can be represented numerically as well, where read=4, write=2, and execute=1.