The setuid set user id is a permission bit, that allows the users to exec a program with the permissions of its owner. The setgid set group id is a bit that allows the user to exec a program with the permissions of the group owner. A random user can exec a setuided script, with the permissions of the owner.
Also a random user can exec a setgided script, with the permissions of the group. The setuid and setgid can be set with the chmod command, like any other permission bits. To view if a file has setuid and setgid, use ls -l or stat.
The s in the user permissions field represents the setuid and the S in the group permission field represents the setgid:. To remove the setuid bit use the -s argument with the chmod command: To remove the setgid use -s for the group: To set the setuid in the octal form, place a 4 in front of the three permission bits.
To set the setgid in the octal form, add a 2 before the three permission digits. I will show you how to find the setuided and setgided files with find: A very nice tutorial. Article layout could be improved a bit, with e. Your email address will not be published. September 29, at 8: November 9, at November 9, at 2: November 6, at 5: February 9, at 2: March 2, at 4: Leave a Reply Cancel reply Your email address will not be published.