How to set the SGID bit on a Directory on CentOS 6.2 Linux Server

In Linux, the SGID (Set Group ID) bit is used to set the group ownership of a file or directory. When a directory has the SGID bit set, any files or subdirectories created within that directory inherit the group ownership of the parent directory instead of the user’s default group. In this guide, we will show you how to set the SGID bit on a directory on CentOS 6.2 Linux server.

Step 1: Identify the Directory

The first step is to identify the directory for which you want to set the SGID bit. For example, let’s say you want to set the SGID bit on a directory called “data” located in the “/var” directory.

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Step 2: Set the SGID Bit on the Directory

To set the SGID bit on the directory, use the following command:

sudo chmod g+s /var/data

This command will set the SGID bit on the “data” directory located in the “/var” directory. Any files or subdirectories created within this directory will inherit the group ownership of the “data” directory.

Step 3: Verify the SGID Bit is Set

To verify that the SGID bit is set on the directory, use the following command:

ls -l /var/data

This command will display the permissions of the “data” directory, including the SGID bit. The output should look something like this:

drwxrwsr-x 2 root root 4096 Apr 13 2023 data

Note the “s” in the group permissions column, which indicates that the SGID bit is set.

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Commands Mentioned:

  • sudo chmod g+s – Set the SGID bit on a directory
  • ls -l – Display permissions of a directory or file

Conclusion

In this guide, we have shown you how to set the SGID bit on a directory on CentOS 6.2 Linux server. By setting the SGID bit on a directory, any files or subdirectories created within that directory inherit the group ownership of the parent directory. This can be useful in a variety of situations, such as when multiple users need to access and modify files within a shared directory. We hope this guide has been helpful to you. If you have any comments or suggestions for improvements, please feel free to share them below.

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