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Useful if you have copied files from an OS without a permission structure (for example, DOS) and you need to disable all executable files but want to be able to descend into your directories.
There are 3 alternatives - vote for the best!
With GNU chmod at least it is that simple.
forces user to rw, group to r, and other to no access.
files will not be marked executable.
directories will be executable for users and groups only.
I hate -exec with find, and this pattern quickly expands to other tasks.
If you can do better, submit your command here.
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