what do the parameters uid and gid with /etc/fstab do?

Question

I'm mounting directories. I wrote the needed lines to /etc/fstab.I'm using cifs protocoll.

I wonder what the parameters uid and gid do, since they're similar for any user. (So this can't be any user id.)

Solution

Mount options for Microsoft (and similar) file systems to set the owner and group

From man mount,

Mount options for fat
       (Note:  fat  is  not  a  separate  filesystem,  but a common part of the
       msdos, umsdos and vfat filesystems.)

       ...

       uid=value and gid=value
              Set the owner and group of all  files.   (Default:  the  uid  and
              gid  of  the  current process.)

There is a similar text for ntfs. See the following link for examples, where uid is used,

How do I use 'chmod' on an NTFS (or FAT32) partition?