Special permissions on files and directories in linux are : SetUID, SetGID and Sticky bit.
With the help of “chmod” command we can implement the special permissions on file and directories.
SUID / Set User ID : A program is executed with the file owner’s permissions (rather than with the permissions of the user who executes it).
SGID / Set Group ID : Files created in the directory inherit its GID, i.e When a directory is shared between the users , and sgid is implemented on that shared directory , when these users creates directory, then the created directory has the same gid or group owner of its parent directory.
Sticky Bit : It is used mainly used on folders in order to avoid deletion of a folder and its content by other user though he/she is having write permissions. If Sticky bit is enabled on a folder…
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