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Please Explain me this command

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Top Forums Shell Programming and Scripting Please Explain me this command
# 1  
Old 02-04-2011
Please Explain me this command
Code:
find . -type f -ctime +3 -exec mv {} /somedirectory/  \;

in particular "-ctime v/s -mtime" and "difference between +3 and -3"
Last edited by Scott; 02-04-2011 at 04:33 PM.. Reason: Code tags
# 2  
Old 02-04-2011
ctime == last change to metadata - inode information, ownership, and protection mask
-3 == less than three days, 72 hours, since the last change. +3 is more than three days.
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# 3  
Old 02-04-2011
If the file data was changed, the file was modified (-mtime).
If the directory entry is changed, say from permissions then the file is changed (-ctime).
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# 4  
Old 02-04-2011
Actually Im trying to move files older than 3 days to some other directory.
Code:
find . -type f -mtime +3 -exec mv {} /somedirectory/  \;

is this correct? or I should use ctime?
mtime is correct right?
Last edited by Scott; 02-04-2011 at 04:33 PM.. Reason: Code tags
# 5  
Old 02-04-2011
That depends on your conditions of 3 days old.

If your wrote a script say yesterday, but forgot to 'chmod +x myscript.sh' until today, the file would be moved differently for -ctime vs. -mtime.

But if you are just talking about log files or something just data structured I would use -mtime instead of -ctime.
# 6  
Old 02-04-2011
Yes today Im running this command to move trace files. I want only 3 days old files should be in bdump, rest moving to other directory.
Then the above -mtime command works right?
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