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doubledna

doubledna

V2EX member #294122, joined on 2018-02-25 16:36:59 +08:00
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Nov 24, 2020
Replied to a topic by zhoudaiyu › Linux › 请问在 Linux 下如何清空一个大文件的内容对磁盘 I/O 的冲击较小？
echo " " > filename
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