Linux read/write execution permissions

time：2024-10-10 16:02:42 Review Insights

Linux read/write execution permissions

In Linux, the read, write, and execute permissions mean the following to folders and files:

1. Read permission: For folders, read permission is actually whether you can read the list of files in the folder, but you can't read the internal file list, and you can still access the files in the folder. For files, the read permission indicates whether the contents of the file can be read.

2. Execution permission: For folders, the execution permission is actually whether a file in the folder can be accessed, that is, whether the folder can be entered. When the execution permission is removed, no files in the folder can be accessed or switched within the folder, but the file list of the folder can be read. For files, the execution permission indicates whether the file can be executed.

3. Write permission: For folders, write permission is actually whether you can change the list of files in the folder, including adding, deleting, renaming, etc. The write permission only restricts not changing the internal file tree structure of the folder, but can modify the contents of the internal files (the file name cannot be changed, and if it is changed, the tree structure will be changed). For files, the write permission indicates whether the contents of the file can be modified.

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