Ruby 转换 Hex文本文件为二进制文件
用串口调试助手接受哦串口数据，貌似没找到怎么直接存储为二进制文件，所以用文本框显示十六进制字节流表示，然后存储（如果直接显示二进制会乱码，而且转换会丢失数据）。然后就写了个Ruby脚本来还原这个十六进制文本流。
filename = ARGV[0]
bytes = []
File.open(filename, "r") do |file|
while str = file.gets
bytes += str.split.map {|byte| byte.hex}
end
end
puts bytes.count
newfilename = filename + ".bin"
File.open(newfilename, "wb") do |file|
file.write bytes.pack("C*")
end
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