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.


-- 
Stephen M. Webb  <stephen.w...@bregmasoft.ca>
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