Todays useful tip:
The linux chmod command has two x operands, x (small) and X (big)
Small x means set the execute bit no matter what.
Big X means set the execute bit only on folders (and files where the execute bit is already set, in other words dont break script files)
This means you can do a recursive chmod and set the execute bit correctly.
eg.
chmod -r a+rwX
Its the little things.
*sigh*
