How to Properly Use the SUID Flag in Linux

What is the SUID flag in Linux?

The SUID flag in Linux allows users to execute a file with the permissions of the file's owner, rather than the permissions of the user running the program. How can we use the SUID flag correctly?

Correct Usage of the SUID Flag

The correct usage of the SUID flag allows all users to execute the application with root user permissions. Which of the following examples shows the correct usage of the SUID flag?

The correct usage of the SUID flag to allow all users to execute an application with root user permissions is shown in this example: -rwsr--r-- 3 root sys 73748 Nov 2 2005 /usr/bin/applicationx. This means that all users, regardless of their own permissions, will execute the application with the permissions of the root user.

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