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# 1  
Old 07-21-2009
comparing time stamps

Hello All,

I'm generating timestamps (file creation timestamps) for all the files in a directory. I need to compare all the timestamps.
for example if i have 4 files and their timestamps are 20091125114556,
20091125114556,20091125114556,20091125114556 respectively.

I need to differentiate atleast secs portion to recognize the file. So what i'm going to do is if all timestamps are same then i will modify seconds portion. But my question here is how to compare these timestamps respect to their corresponding files.?

Please suggest a way but not the solution.

Thanks in advance,
RSC1985
# 2  
Old 07-21-2009
you are comparing with what?

where the timestamps present? in the filename ?
# 3  
Old 07-21-2009
Comparing with the other timestamps of other files. And i'm storing timeStamp in a variable as of now. My questions is how to acheive that comparison task?
# 4  
Old 07-21-2009
Search a bit, this has been answered before.
I will give you a hint how you can do this:
1. separte the YYYYMMDD and HHMISS parts
2. Compare the YYYYMMDD if they are same
3. compare HHMISS
this way you can know whether the timestamps are same or not... rest is just the coding manipulation.
# 5  
Old 07-22-2009
Can't I do direct comparison Because if i store into a variable the timestamp, I can directly do the comparison. But I'm struggling to store all these timestamps and next comparing all these timestamps one with the other.I should get how many are same and what are those so that i can go with my rest of the processing.If could give some more idea on this it would be really helpful.
# 6  
Old 07-22-2009
can you post specific samples so we understand the problem better?
# 7  
Old 07-22-2009
Below is the example.

I will get the timestamps(file modification time in the form YYYYMMDDHHMMSS) for all the files in the directory by the below code.


for filename in `find . -type f -exec basename {} \;`
do
echo "The file name is $filename"
timestamp=`../../tmp/getTime.pl $filename`
echo "the timestamp of $filename is $timestamp"
done

Now I have to check for what are the files that have same timestamps.
for example file1 has 20091225114556 timestamp and file3 has 20091225114556 timestamp and file4 has also 20091225114556 the same timestamp. My task is to modify these timestamps inorder to make them unique.
So i need to modify the timestamp of file3 and file4 as 20091225114557 and 20091225114558.

could you please give an idea how to proceed on this?

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