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# date && echo "this is file be used test time of file" >filetime.txt && ll --full-time filetime.txt
Tue Aug 4 15:13:44 HKT 2009
-rw-r--r-- 1 root root 39 2009-08-04 15:13:44.000000000 +0800 filetime.txt
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# stat filetime.txt
File: `filetime.txt'
Size: 39 Blocks: 8 IO Block: 4096 Regular File
Device: 802h/2050d Inode: 17 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2009-08-04 15:13:44.000000000 +0800
Modify: 2009-08-04 15:13:44.000000000 +0800
Change: 2009-08-04 15:13:44.000000000 +0800
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atime=access time
mtime=modifiy time
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