Bash：回显二进制输出
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Bash : echo binary output
提问by mostworld77
for a script i must create a file and add a line (only numeric) to this. But this should be in binary mode, but I havent found a solution.
对于脚本，我必须创建一个文件并为此添加一行（仅数字）。但这应该是二进制模式，但我还没有找到解决方案。
My actually commands:
我的实际命令：
SIZE=200
touch quota
echo $SIZE >> quota
How can do this in binary mode?
如何在二进制模式下做到这一点？
采纳答案by konsolebox
Perhaps you need to use the -n option?
也许您需要使用 -n 选项？
echo -n "$SIZE" >> quota
Or maybe you need the binary representation it but this is only limited to 8 bits or 255.
或者您可能需要二进制表示，但这仅限于 8 位或 255 位。
echo -ne "$(printf '\x%x' 200)" >> quota
Also make sure that you really need to use >> and not > as >> appends data to existing files, not overwrite it.
还要确保您确实需要使用 >> 而不是 > 因为 >> 将数据附加到现有文件，而不是覆盖它。
