while loop inside while loop

Login or Register to Ask a Question and Join Our Community

while loop inside while loop

Tags

loop, shell scripts, while loop

Login to Discuss or Reply to this Discussion in Our Community

Top Forums Shell Programming and Scripting while loop inside while loop

01-07-2008

Registered User

90, 0

Join Date: Apr 2007

Last Activity: 19 February 2013, 12:36 PM EST

Location: Kolkata

Posts: 90

Thanks Given: 2

Thanked 0 Times in 0 Posts

while loop inside while loop

Dear All,

i have a awk script where i'm using while loop inside while loop
here is the code:

awk -v DATE="$CURRDATE" -v -F'@' 'BEGIN {

while(( getline < "Merge_Calldet.txt" ))
{

ARR=$5
LINE=$0
while(( getline < "Merge_Accessnum.txt" ))
{
TESTSIMENTRY=$1
FILEDATE=$15
if ( TESTSIMENTRY == ARR )
{
FLAG=1
break
}
else
{
FLAG=0
continue
}

}
if (FLAG == 1)
{
print "Y" "@" FILEDATE "@" LINE
}
else
{
print "N" "@" DATE "@" LINE
}
}

}' >> Join_Calldt_Accnum.txt

I'm trying to compare 5th field of Merge_Calldet.txt with the fisrt field of Merge_Accessnum.txt.
means it will take 5th field from first line of Merge_Calldet.txt and will compare of entire first field of Merge_Accessnum.txt file.
again it will take the 5th field from second line of Merge_Calldet.txt and so on.
but the problem is in the flow is coming inside the second while loop only for one tiime.
can anyone plz suggest me the mistake i have done.

Thanks,
Regards,
Pankaj

panknil

View Public Profile for panknil

Find all posts by panknil

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Write a while loop inside for loop?

I'm taking a unix class and need to countdown to 0 from whatever number the user inputs. I know how to do this with a while or until loop but using the for loop is throwing me off.... I know I can use an if-then statement in my for loop but can I include a while loop in my for loop?

2. Shell Programming and Scripting

If inside If loop

Hi All, Below is the very simple code snippet but it si giving me syntax error #!/bin/bash #To ensure If JMS directory exists or not ServerName=$(hostname) #To ensure If JMS directory exists or not echo $ServerName if ; then echo "Inside First If" if ; then echo 'JMS...

3. UNIX for Dummies Questions & Answers

while loop inside a for loop

Hi, I am a newbie and would like to create a shell script that will move one file at a time from one path to another path in the same server. However, the next file should wait until the first file gets deleted by an application. I tried creating the script but right after the first file has...

4. Shell Programming and Scripting

For Loop inside For loop

I am new to unix and trying to make a script for writing all my command into another file and use that file to run all commands I am trying to use for loop with echo command to generate a command based script for writing the file with all the command sequentially w.r.t for loop. I want...

5. Shell Programming and Scripting

BASH loop inside a loop question

Hi all Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !....

6. Shell Programming and Scripting

Need help using sed inside the loop.

Hi, i have written a script. it collects data based on the sql queries executed by it. i have multiple output files. after the output file is made i need to do some cosmetic changes in the files and then store them. i am unable to use sed conditions inside the loop. see below code for...

7. Shell Programming and Scripting

Using 'su' inside a loop

Hi, I am using su within a for loop. As you might expect, it prompts for password during each loop execution. Here is my piece of code: for i in $LIST do if then DATABASE=`echo $i | awk -F "|" '{ print $1 }'` USER_ID=`echo $i | awk -F "|" '{ print $2 }'` su - apstage -c...

8. Shell Programming and Scripting

Is it possible to have a for loop inside another for loop?

Is it possible to have a for loop nested inside another for loop? I am trying to run a script against specific files inside a child directory but I can't seem to find a solution that is clean and affect to do it. Here is what I am trying do. I have 2 gzip files in each of the Target Directories...

9. UNIX for Dummies Questions & Answers

SED inside while loop

Hi, im having problem creating a loop using my code: aside from the fact that the 1st variable (VAR) does not increment, it loops more than the expected output. for sample purposes, test csv contains 3 lines. #get number of lines in the file lines=$( wc -l < test.csv ) ...

10. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the...

Login or Register to Ask a Question