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day 8 - linux 命令 : touch #77

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hoperyy opened this issue Oct 12, 2017 · 0 comments
Open

day 8 - linux 命令 : touch #77

hoperyy opened this issue Oct 12, 2017 · 0 comments

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@hoperyy
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hoperyy commented Oct 12, 2017

day 8 - linux 命令 : touch

touch 命令用来：（1）新建一个文件；（2）修改文件时间戳

语法

touch [选项] 文件……

选项

  • -f

    仅负责解决 BSD 版本 touch 指令的兼容性问题

  • -r

    touch -r a b 将 b 文件的时间戳修改成 a 文件的时间戳

  • -t

    指定时间戳

实例

  • 创建不存在的文件

    touch a b

  • 更新 log.log 和 log2.log 的时间戳相同

    touch -r log2.log log.log

  • 设定文件的时间戳

    touch -t 201211142234.50 log.log

    格式：

    [[CC]YY]MMDDhhmm[.SS]
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@hoperyy