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和楼主遇到相同问题。 估计是 服务端 locale 不对， 服务端 console 把不认识的字符统一转义成 ? 字符了。
?
典型的是 tree 命令表格字符是 ascii 或 ? 我用 export LC_ALL=C.UTF-8 解决的
export LC_ALL=C.UTF-8