Dear Sir/Madam, Please allow me ask some things about share samba on CentOS 6.5 My case: data (excel file, linked file) of shared folder need security and not allow deleting except for owner and owning group, My testing configuration: + NTFS permision: chmod 3775 on shared folder, # chmod 3777 fa # ll total 8 drwxrwsrwt 2 fa1 fa 4096 Feb 2 12:41 fa + Samba permission: [fa] comment = Share folder FA path = /home/fa public = no valid users = @fa, aa, bb #@fa= fa1, fa2 write list = @fa, aa, bb force create mode = 0777 create mask = 0777 directory mask = 3777 force directory mode = 3777 User fa1, fa2 often can not save some excel files, reported error “Access denied. Contact your administrator” => chmod -t fa –> save file normally but other user will be deleted file/folder. My user (fa) suggest that they can full permission on folder fa, other users only append file content without deleting file/folder => Could we configure as this suggestion ?. I also searched on Internet about this but not yet configured. Could you please review for me and give me advice about this case ? Hope receive your help soon. Thank you very much. Best Regards, ~~~~~~~~~~~~~~~~~~~~~~ NGUYEN VAN DO E-mail : nvdo at fcv.fujitsu.com ~~~~~~~~~~~~~~~~~~~~~~