使用touch命令加參數(shù)m時(shí)，不是只改變mtime嗎？怎么連ctime也一起改變了？謝謝各位高手予以解答。
1 回答
慕的地8271018
TA貢獻(xiàn)1796條經(jīng)驗(yàn) 獲得超4個(gè)贊
按照man文檔的解釋的三種時(shí)間： 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().實(shí)際使用中touch確實(shí)會(huì)改變mtiem和ctime，我的理解是透徹修改mtime的方式是通過(guò)修改文件能容，保存，然后還原文件內(nèi)容再保存，因此mtime和ctime都會(huì)改變。
希望對(duì)你有幫助?。?/p>
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