Touch Challenge

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# 1  
Old 08-04-2012
Touch Challenge

I've been given a directory full of subdirectories full of logfiles of the same name:


The above is the actual directory structure for 14 days worth of a logfile that is generated every 30 minutes. It's been done this way to preserve the identicle file name "blockednodes.csv"

I've been tasked with using touch to update each of the 48 files, for each of the 14 days, with the date and time from 0000 on 25/07/2012 onwards.

I have managed the following line so far, but can't seem to get figure out how to include the time?

for i in {1..14}; do for j in {1..48}; do echo $(date +%Y%m%d --date="2012-07-24 + $i days") Day$i/File$j/BlockedNodes.csv; done; done

20120725 Day1/File1/BlockedNodes.csv
20120725 Day1/File2/BlockedNodes.csv
20120725 Day1/File3/BlockedNodes.csv
20120726 Day2/File1/BlockedNodes.csv
20120726 Day2/File2/BlockedNodes.csv
20120726 Day2/File3/BlockedNodes.csv

Can anyone suggest a way of adding the hour and minute in here?

Any help is appreciated.

Thanks and regards

Last edited by Scott; 08-05-2012 at 06:32 PM.. Reason: Code tags
# 2  
Old 08-04-2012
From man touch:

       -t STAMP
              use [[CC]YY]MMDDhhmm[.ss] instead of current time

# 3  
Old 08-04-2012
Thanks for the suggestion Corona688. Can you suggest how I automate this for 1500+ files in multiple directories of their own, as above?

# 4  
Old 08-04-2012

 for j in {1..48}; do ((h=(j-1)/2,m=(j-1)%2*30)); date +%Y%m%d%H%M -d "2012-07-24 + $i day $h:$m"; done

or maybe not subtract 1 from j, since file1 would be from 0000-0030, it'd want time 0030. the last file would be 2359 ... ?

Last edited by neutronscott; 08-04-2012 at 10:18 PM.. Reason: put it in the date call.
# 5  
Old 08-05-2012
Is the find command of any use?

   cd /<your subdir>
   find . -depth -type f

This find command will just list the files. From here you can -exec your touch command.

   find . -depth -type f -exec touch <do whatever> {} \;

or maybe use xargs if the number of files is really high.

The -exec can be calling a script or it can do the touch command directly.

Last edited by Scott; 08-05-2012 at 06:32 PM.. Reason: Code tags
# 6  
Old 08-05-2012
Thanks for the replies. I should probably mention, that I'm completely new to this.


I've tried to add your suggestion to mine, but can't seem to get it to work. It seems to spew the contents of the logfiles to the screen...

$ for i in {1..14}; do for j in {1..48}; do touch -d "((h=(j-1)/2,m=(j-1)%2*30))"; date +%Y%m%d%H%M -d "2012-07-24 + $i day $h:$m"; Day$i/File$j/BlockedNotdes.csv; done; done


Does find, find files in any particular order? As the files are all of the same name, would I be able to guarantee that the correct files would be found and updated in the correct order?

Thanks and regards

Last edited by Scott; 08-05-2012 at 06:33 PM.. Reason: Code tags
# 7  
Old 08-05-2012
Originally Posted by Cludgie
Thanks for the suggestion Corona688. Can you suggest how I automate this for 1500+ files in multiple directories of their own, as above?
I've given you all the pieces. Have you tried anything with them?

You need a [[CC]YY]MMDDhhmm[.ss] date. How do you make a [[CC]YY]MMDDhhmm[.ss] date?

man date would be a good start. What do those % things you're putting into date mean?

       %d     day of month (e.g., 01)
       %H     hour (00..23)
       %m     month (01..12)
       %M     minute (00..59)
       %S     second (00..60)
       %Y     year

So you can make a date of the form required by giving it the right format string.

So that'd be touch -t $(date -d "2012-07-24 + $i day" "+%Y%m%d%H%M%S") filename
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