Detailed explanation of the solution to permission denied in Linux

Permission denied:

The reason for this is: there is no permission to read, write, create files, delete files, etc.

Solution: Enter the command sudo chmod -R 777 /工作目錄，

For example: sudo chmode -R 777 /home/HDD , then you can perform a series of operations under this path.

sudo: It is a Linux system management command and a tool that allows system administrators to allow ordinary users to execute some or all root commands.

-R: refers to the application to all subdirectories and files in the directory;

777: refers to the highest authority that all users have.

But it is not convenient and not suitable for novices. The simple and rough method is as follows:

Enter in the command line

sudo passwd

It will prompt you to enter a new password. Re-enter the password, just enter the same as before. After success, enter

su root

Just enter the password again~

At this point you will find that the $ sign before the command you entered has changed to a # sign, which means you have succeeded.

The following are the additions from other netizens

hint

Permission denied

Solution:

// 777 permissions should be used with caution as it is a high permission
$ sudo chmod -R 750 a directory

in

-R means cascading to all subdirectories and files in the directory
750 means the file owner has read, write, and execute permissions, the file group has read and execute permissions, and other users have no permissions

Owner: rwx=4+2+1=7.
Group: rx=4+0+1=5.
Others: ---=0+0+0=0

Write, read, and execute permissions have the following numeric values:

r(read) = 4
w (write) = 2
x (executable) = 1
No permissions = 0

The permission number for a particular user class is the sum of the permission values ​​for that class.

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.