> Executableness has more to do with file permissions than with binary or 
> ASCII file format.

Yes, but when you say "that's an executable" in UNIX-space you
don't generally mean "that's a file with the execute bit set",
after all that file with the execute bit set may be a directory
and the bit means something completely different, or it may have
been set by accident or by a program using it for other reasons
(Samba can be configured to use the Execute bit to indicate whether
Windows thinks the Archive bit is set or not, for example)... and
unsetting the execute bit doesn't make it "not an executable", it
makes it a non-executable executable.

The adjective and the noun are really different words. "An executable"
is a binary file that's loaded directly, "an executable script" is a
script with the execute bit set.


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