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#!/bin/bash -eu
#
# This script checks the size of /tmp/linux-3.0.tar.gz and downloads
# a fresh copy if the size is incorrect or the file is missing.
URL=https://cdn.kernel.org/pub/linux/kernel/v3.0/linux-3.0.tar.gz
TGZ=/tmp/linux-3.0.tar.gz
SIZE_WANT=96675825
SIZE_ACTUAL=0
if [[ -e $TGZ ]]; then
if [[ $OSTYPE == linux* ]] ; then
SIZE_ACTUAL=$(stat -c %s "$TGZ")
else
# Mac OS X
SIZE_ACTUAL=$(stat -f %z "$TGZ")
fi
fi
if [[ $SIZE_ACTUAL -ne $SIZE_WANT ]]; then
echo "Downloading linux-3.0.tar.gz"
if command -v wget > /dev/null ; then
wget -nv --show-progress -c -O "$TGZ" "$URL"
else
curl -o "$TGZ" "$URL"
fi
fi
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