Move folder once it is "ready"


 
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# 1  
Old 05-23-2014
Move folder once it is "ready"

I want to move the folder once it stops receiving data. The sign to tell when the folder is ready is the number of files in it. Here, once the folder has 27 files, it tells me it is "ready". An example, S46 has 62 subfolders with similar pattern S46_005, S46_007 ---> S46_127. Some may not have 27 files, so leave those. Eventually all the 62 subfolders will be grouped into a master folder S46. My BASH code:
Code:
for j in S46_*
do
a=$(ls ${j} | wc -l) 
if ( $a == 27) 
then 
mv ${j} S46
fi
done

I always got error:
Code:
27: command not found!
27: command not found!
...

It seems related to the variable $a. What did I miss with my code? Thanks!
# 2  
Old 05-23-2014
Try:
Code:
if  [ $a -eq 27 ]

However, something to think about:
Once it stops recieving files, and having 27 files is quite diffrent.

hth
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# 3  
Old 05-23-2014
Ahh, should have spotted that by myself. Mixed up with my C practice these days.
I am aware Once it stops recieving files, and having 27 files is quite diffrent. From my example, the file is small and writing is fast so that I assumed (!) once with 27 files, the folder is ready.
Do you have some scripts for that?
Thanks!

Last edited by yifangt; 05-23-2014 at 07:05 PM..
# 4  
Old 05-23-2014
Nope, havent come by such a situation/requirement yet.
# 5  
Old 05-23-2014
27 files is not 27 complete files.
# 6  
Old 05-23-2014
Then, let me ask a related question: How to check if a folder is ready without any further operations on it, like writing files into it for this circumstance? Googled for a while it seems no direct discussion on this.
Thanks!
# 7  
Old 05-23-2014
I'd take an appraoch of repeatingly compare the output of:
Code:
du -s /path/to/S46_127

With some delay of course, once the values are identical, the files should be 'ready'.

Maybe this gives another option lsof /path/to/S46_127/*

hth
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