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"HX" == Herbert Xu [off-list ref] writes:
HX> It's also better to use -eq instead of = since you are comparing
HX> numbers, not strings. If you do that you can keep the double
HX> quotes since the spaces will be removed automatically.
I remember being burned by busybox "test" which did not ignore
spaces. I do not know if the latest one is fixed, though.