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Using find in a directory containing large number of files

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# 1  
Old 08-08-2011
Using find in a directory containing large number of files
Hi All,

I have searched this forum for related posts but could not find one that fits mine. I have a shell script which removes all the XML tags including the text inside the tags from some 4 million XML files.

The shell script looks like this (MODIFIED):

Code:
find . "*.xml" -print | while read page
do
cat $page | sed -e 's/<.*>//g' $page>$page.txt
done

Previously, the shell script looked like this (ORIGINAL):


Code:
ls -1 *.xml | while read page
do
cat $page | sed -e 's/<.*>//g' $page>$page.txt
done

Since, ls gives "Argument list too long" message, so after searching through this forum I could do some modifications to my ORIGINAL to come up with the MODIFIED version (above). But the MODIFIED version does not seem to work.
# 2  
Old 08-08-2011
Hi

"ls -1 " and "find . " are not the same. find will get files from folders within the current directory as well, if it finds any.

Guru.
This User Gave Thanks to guruprasadpr For This Post:
shoaibjameel123
# 3  
Old 08-08-2011
Thanks. Is there any workaround to handle 4 million files in a directory in Linux? Many posts here point out to using xargs. Let me try that if it works I'll post my code here. Smilie

---------- Post updated at 01:47 PM ---------- Previous update was at 01:12 PM ----------

ok, so as of now this is what I have done:


Code:
echo *.xml | xargs ls -1 | while read page
do
cat $page | sed -e 's/<.*>//g' $page>$page.txt
done

When I run
Code:
echo *.xml | xargs ls -1

I can see the list of files. But the .txt files that I am getting are all empty.
# 4  
Old 08-08-2011
Hi

You can try this code for finding large number of files in a directory.

Code:
for page in `find scripting |grep -e 'xml$'`; 
do 
  cat $page | sed -e 's/<.*>//g' $page>$page.txt_3; 
done

In the above code, "scripting" is the location of the directory

And this code cat $page | sed -e 's/<.*>//g' $page>$page.txt
As you said it removes all the XML tags including the text inside the tags in all the XML files.So obviously the output text files will be empty.
Last edited by Scott; 08-08-2011 at 07:18 AM.. Reason: Please use code tags
This User Gave Thanks to ravi san For This Post:
shoaibjameel123
# 5  
Old 08-08-2011
Thanks. Sorry, I guess I was a bit vague here. When I wrote
Quote:
shell script which removes all the XML tags including the text inside the tags from some 4 million XML files
I meant the script deletes contents inside the tags like
Code:
<text>

Code:
 <?xml version="1.0" encoding="iso-8859-1" ?>

This means my script removes only the above tags including all the text inside the tags (like "text" and "?xml version="1.0" encoding="iso-8859-1" ?") and keeps the main paragraphs of the files.

---------- Post updated at 05:12 PM ---------- Previous update was at 05:09 PM ----------

Oh great!

You've pointed out one more fault. It is indeed deleting everything. This I can fix myself.
# 6  
Old 08-08-2011
Code:
 
Is this correct?
 
cat $page | sed -e 's/<.*>//g' $page>$page.txt

It should be 
 
sed -e 's/<.*>//g' $page>$page.txt

This User Gave Thanks to panyam For This Post:
shoaibjameel123
# 7  
Old 08-08-2011
Yes it can also be your way. But my way works too. Smilie
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