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.



Robert P. J. Day                                 Ottawa, Ontario, CANADA

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