CHMOD | PERMISSIONS CONVERTER

PERMISSIONS CONVERTER

Online linux permissions converter. Convert permissions for any distribution: Ubuntu, Manjaro, Pop!_OS, Arch Linux, Mac ...

permissions-converter.com

I share with all of you this very useful web page to consult some kind of permissions for our files. I understand that for more advanced users it will not be useful at all and may even seem silly, but it has saved me from many.

You just enter the permissions and that's it!

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And now for the more curious I will try to explain how to understand the conversion so that we don't have to rely on anything.
In Linux and other Unix-like operating systems, file permissions determine who can access and modify files and directories. File permissions are specified using a three-digit octal (base-8) notation, which represents the permissions for the owner, group, and others (also known as "world").

Here's an example of how to convert permissions from the octal notation (777) to the symbolic notation (rwxrwxrwx):

1. Start with the octal notation (777). This represents the permissions for the owner, group, and others.

2. Break down the octal notation into its individual digits. In this case, the first digit is 7, the second digit is 7, and the third digit is 7.

3. Convert each digit to its corresponding symbolic notation. In the symbolic notation, "r" represents read permission, "w" represents write permission, and "x" represents execute permission.If the digit is 0, it means that the corresponding permission is not set.

• If the digit is 1, it means that the corresponding permission is set to execute only.
• If the digit is 2, write only.
• 3, write and execute.
• 4, read only.
• 5, read and execute.
• 6, read and write.
• 7, read, write, and execute.

1. Combine the symbolic notation for each digit to get the final result. In this case, the octal notation 777 is equivalent to the symbolic notation rwxrwxrwx.

For example, if you have a file with permissions set to 777, it means that the owner has read, write, and execute permissions; the group has read, write, and execute permissions; and others have read, write, and execute permissions. This is equivalent to the symbolic notation rwxrwxrwx.

And now that we understand it a little better, we will see how to apply the chmod command and what it works for.
The chmod command is used to change the permissions of a file or directory in Linux and other Unix-like operating systems. You can use chmod to grant or revoke permissions for the owner, group, and others.
Here's an example of how to use the chmod command to change the permissions of a file or directory from 777 (rwxrwxrwx) to 755 (rwxr-xr-x) using the octal notation:

1. Open a terminal window.
2. Use the cd command to navigate to the directory that contains the file or directory whose permissions you want to change. For example:

cd /path/to/directory

1. Type chmod followed by the octal notation for the desired permissions and the name of the file or directory. For example:

chmod 755 file.txt

1. This will change the permissions of the file file.txt to 755 (rwxr-xr-x).

You can also use the chmod command with the symbolic notation to specify permissions. For example, to change the permissions of a file or directory from 777 (rwxrwxrwx) to 755 (rwxr-xr-x) using the symbolic notation, you can use the following command:

chmod u=rwx,g=rx,o=rx file.txt

This will change the permissions of the file file.txt to 755 (rwxr-xr-x). The u represents the owner, the g represents the group, and the o represents others. The = symbol means "set to" and the , symbol separates the different permissions.
You can also use the chmod command with the -R option to recursively change the permissions of all files and directories inside a directory. For example:

chmod -R 755 /path/to/directory

This will change the permissions of all files and directories inside the /path/to/directory directory and all its subdirectories to 755 (rwxr-xr-x).

And this has been all my people, I hope to help, I am more interested in understanding the permissions than in using the shared resource.