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Full Discussion: While loop read line Issue
Top Forums Shell Programming and Scripting While loop read line Issue Post 302415431 by saurabhkumar198 on Thursday 22nd of April 2010 02:59:16 PM
Old 04-22-2010
Error While loop read line Issue

Hi

I am using while loop, below, to read lines from a very large file, around 400,000 rows. The script works fine until around line 300k but then starts giving incorrect result.

I have tried running the script with a smaller data set and it works fine. I made sure to include the line where the problem starts in the data set to make sure there are no special characters that are causing the issue.

Please let me know if this is a script issue or some size limit issue.

Code:
while read line
do
count=0
echo $line | cut -c250-310  | cut -d"_" -f3 | cut -c1-9 | sed 's/ //g' | read tran_id
echo $line | awk '{ n += gsub( "<TCRMContractPartyRoleBObj>", "") } END { print n }' | sed 's/ //g' | read count
count=$n
echo $tran_id"|"$count >> $XML_OUTPUT
done < $XML_INPUT_FILE

Output - Problem starts at line 386501 below and continues till end of file
Code:
+386498 TK1251683|1
+386499 TK1251684|2
+386500 TK1251684|4
+386501 nNameBObj|1
+386502 hodBObj><|1
+386503 e><XSpoke|1
+386504 tractType|1
+386505 ourceIden|1
+386506 ountryTyp|1

Thanks
Saurabh

Last edited by Scott; 04-22-2010 at 04:10 PM.. Reason: Please use code tags
 

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break(1)							   User Commands							  break(1)

NAME
break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until loop SYNOPSIS
sh break [n] continue [n] csh break continue ksh *break [n] *continue [n] DESCRIPTION
sh The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels. The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop. csh The break utility resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line. The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop. ksh The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified, then break n levels. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be exited. The continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n- th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign, and also that word splitting and file name genera- tion are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), exit(1), ksh(1), sh( 1), attributes(5) SunOS 5.10 17 Jul 2002 break(1)
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