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Improving find to read table name from file


 
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# 1  
Improving find to read table name from file

Hi there,
I currently use the following find command to recursively search all the subdirectories in our file system for a table ( in this case BB_TENURE_DAYS)

Code:
find -type f -exec grep -l "BB_TENURE_DAYS" {} \+

So I have this so far - the problem is how do I read the line to get the tablename

]
Code:
for line in `cat /tmp/$$controlFilesFound.txt`
        do
          #get filename some how
      
          find -type f -exec grep -l "$filename" {} \+
        done

how do I pick the filename up - it is the only field in the file

Many thanks
Rob..

Last edited by rjsha1; 04-14-2016 at 07:51 AM.. Reason: more code added
# 2  
Quote:
Originally Posted by rjsha1
Code:
find -type f -exec grep -l "BB_TENURE_DAYS" {} \+

grep can be made to work on all files in a directory, so (something like) this might speed things up:

Code:
find . -type d -exec grep "BB_TENURE_DAYS" {}/* \;

Quote:
Originally Posted by rjsha1
So I have this so far - the problem is how do I read the line to get the tablename
Code:
for line in `cat /tmp/$$controlFilesFound.txt`
        do
          #get filename some how
      
          find -type f -exec grep -l "$filename" {} \+
        done

how do I pick the filename up - it is the only field in the file
In this case it lands on <stdout>, so you can pick it up by a simple redirection, pipeline or something such:

Code:
for .... ; do
     .....
done > /some/file

for .... ; do
     .....
done | read VAR

But your loop is a little flawed. Consider:

Code:
while read line ; do
     [....]
done < /tmp/$$controlFilesFound.txt

instead. I usually add provisions to be able to add comment lines like in shell so that i can put notes for myself into the config files. I also filter out empty lines and whitespace prior to reading the file ("<b>" and "<t>" is a literal blank and tab character) This looks like:

Code:
sed 's/#.*//;s/^[<b><t>]*//;s/[<b><t>]*$//;/^$/d' /tmp/$$controlFilesFound.txt |\
while read line ; do
     [....]
done

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
# 3  
many thanks - it's been a while since I have done unix stuff - it's all coming back to me 0Smilie

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