linux的touch命令参数m怎么使用
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解决时间 2021-04-25 02:07
- 提问者网友:我一贱你就笑
- 2021-04-24 14:53
使用touch命令加参数m时,不是只改变mtime吗?怎么连ctime也一起改变了?谢谢各位高手予以解答。
最佳答案
- 五星知识达人网友:三千妖杀
- 2021-04-24 15:27
按照man文档的解释的三种时间: st_atime
Time when file data was last accessed. Changed by the
following functions: creat(), mknod(), pipe(),
utime(2), and read(2).
st_mtime
Time when data was last modified. Changed by the fol-
lowing functions: creat(), mknod(), pipe(), utime(),
and write(2).
st_ctime
Time when file status was last changed. Changed by the
following functions: chmod(), chown(), creat(),
link(2), mknod(), pipe(), unlink(2), utime(), and
write().实际使用中touch确实会改变mtiem和ctime,我的理解是透彻修改mtime的方式是通过修改文件能容,保存,然后还原文件内容再保存,因此mtime和ctime都会改变。
希望对你有帮助!!
Time when file data was last accessed. Changed by the
following functions: creat(), mknod(), pipe(),
utime(2), and read(2).
st_mtime
Time when data was last modified. Changed by the fol-
lowing functions: creat(), mknod(), pipe(), utime(),
and write(2).
st_ctime
Time when file status was last changed. Changed by the
following functions: chmod(), chown(), creat(),
link(2), mknod(), pipe(), unlink(2), utime(), and
write().实际使用中touch确实会改变mtiem和ctime,我的理解是透彻修改mtime的方式是通过修改文件能容,保存,然后还原文件内容再保存,因此mtime和ctime都会改变。
希望对你有帮助!!
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