On Fri, 23 Feb 2018, Stephen M. Webb wrote:

> On 2018-02-23 02:51 AM, Robert P. J. Day wrote:
> >
> >   i can't believe i've never noticed the 'X' (upper case) permission
> > setting for the chmod command, explained thusly in the man page:
> >
> > "The letters rwxXst select file mode bits for the affected users: read
> > (r), write (w), execute (or search for directories) (x),
> > execute/search only if the file is a directory or already has execute
> > permission for some user (X), set user or group ID on execution (s),
> > restricted deletion flag or sticky bit (t)..."
> >
> >   what is the rationale for that particular setting? what problem is
> > it trying to solve? i'm just a bit puzzled.
>
> It lets you fix broken permissions easily.  Imagine a quick "chmod
> -R a+X ." on a home directory in which you unzipped some DOS files
> which lack any POSIX permission to traverse the contained folders,
> because DOS.

  ah, quite so, thanks.

rday
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