在linux中，- 如果单独使用 - 符号，不加任何该加的文件名称时，代表"标准输入"的意思
如下小技巧，nc命令来传输目录下多个文件
# host A, on receiver, go to destination directory and execute:
$ nc -l $port | tar xf -
# host B,on sender
$ tar cf - . | nc $hostA $portref: linux特殊符号大全
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December 6, 2018 09:44
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[linux tips]
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