It would be great if busybox would allow wget to have the --spider
option made available. --spider specifically provides the length value
which is the size of the file we are willing to download.
This is particularly helpful in embedded devices such as opensource
router-firmware (Tomato, DD-WRT, OpenWRT, etc.) where there's no
permanent filesystem and a squash filesystem to deal with. Often files
are to be downloaded from Internet and end up on a filesystem hosted in
RAM. So it would be priceless to have an option such as wget --spider to
check the length (size) of the file to download so that a control can be
implemented on whether to download or not based on RAM availability.
Thanks
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