unix - "find command -mtime 0" not getting the file i expect -

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i trying find file 0 days old. below steps performed test this

$ ls $ ls -ltr total 0 $ touch tmp.txt $ ls -ltr total 0 -rw-r-----   1 tstuser tstuser           0 feb 28 20:02 tmp.txt $ find * -mtime 0 $ $ find * -mtime -1 tmp.txt $

why '-mtime 0' not getting me file?

what exact difference between '-mtime 0' , '-mtime -1'?

im sure there must other ways find files 0 days old in unix, im curious in understanding how '-mtime' works.

   -mtime n           file's data last modified n*24 hours ago.  see  comments           -atime understand how rounding affects interpretation           of file modification times.

so, -mtime 0 equal to: "file's data last modified 0 hours ago. while -mtime 1 be: "file's data last modified 24 hours ago"

edit:

   numeric arguments can specified     +n     greater n,     -n     less n,     n      n.

so guess -1 modified within last 24 hours, while 1 1 day.


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