fstat fileId ?item? | ?stat arrayvar?

          Obtain status information about an open file.

          The following keys are used to identify data items:

          atime
               The time of last access.

          ctime
               The time of last file status change

          dev  The device containing a directory  for  the  file.
               This  value  uniquely  identifies  the file system
               that contains the file.

          gid  The group ID of the file's group.

          ino  The inode number.  This field uniquely  identifies
               the file in a given file system.

          mode The mode of the file (see the mknod system call).

          mtime
               Time when the data in the file was last modified.

          nlink
               The number of links to the file.

          size The file size in bytes.

          tty  If the file is associated with a terminal, then  1
               otherwise 0.

          type The type of the file in symbolic  form,  which  is
               one  of  the  following  values:  file, directory,
               characterSpecial,  blockSpecial,  fifo,  link,  or
               socket.

          uid  The user ID of the file's owner.

          If one of these keys is specified as  item,  then  that
          data item is returned.

          If stat arrayvar is specified, then the information  is
          returned in the array arrayvar.  Each of the above keys
          indexes an element of the array containing the data.

          If only fileId is specified, the  command  returns  the
          data as a keyed list.

          The following values may be returned only if explicitly
          asked  for,  it  will not be returned with the array or
          keyed list forms:

          remotehost
               If fileId is a TCP/IP socket  connection,  then  a
               list  is returned with the first element being the
               remote host IP address.  If the remote  host  name
               can be found, it is returned as the second element
               of the list.  The remote host IP  port  number  is
               the third element.

          localhost
               If fileId is a TCP/IP socket  connection,  then  a
               list  is returned with the first element being the
               local host IP address.  If the local host name can
               be  found, it is returned as the second element of
               the list.  The local host IP port  number  is  the
               third element.

     This command is provided by Extended Tcl.