linux文件和目录的ctime,mtime,atime的区别

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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().

ctime不是create，是change的意思。

注意：

ls 中的时间，是mtime

ls -lc filename 列出文件的 ctime
ls -lu filename 列出文件的 atime
ls -l filename 列出文件的 mtime