The following operands shall be supported:
file A pathname of an existing SCCS file or a directory. If
file is a directory, the admin utility shall behave as
though each file in the directory were specified as a
named file, except that non-SCCS files (last component
of the pathname does not begin with s.) and unreadable
files shall be silently ignored.
newfile A pathname of an SCCS file to be created.
If exactly one file or newfile operand appears, and it is '-',
the standard input shall be read; each line of the standard input
shall be taken to be the name of an SCCS file to be processed.
Non-SCCS files and unreadable files shall be silently ignored.
