in our system , there are three system administrator have the root password , sometimes they will delete the file that was created by other administrator , is it possible to set the permission to the specific file , so that the specific file can only deleted by the file creator not by the all root owner ? thx.

chmod 744 filename

thx reply , but 744 seems can be deleted by root user , am i right?

The operating system doesn't keep track of which person actually uses an account. To the system, the user with uid=0 is root, and if you log in as root you will have uid=0.

A better solution is to limit root access to one specific person and instead have other user accounts with elevated privileges. Either add the users to the groups they should belong to, or if that's not enough you may want to change group ownership of files and directories to a new group, created by yourself (the real root user) if the ownership is too general.


Håkan