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Oh .. that's what I was looking for all along: I do not need the loop it's just that I'm at level 0 in shell scripting ;) thanks again.

And BTW, the file was created in linux, but with PHP and...

Hey Scrutinizer, I didn't read your message when I last posted. Thanks for your help

The output of the cat was:


0000000 A U 0 9 2 2 \r \n A U 0 9 0 1 \r \n...

Ok, removing CR made it work:


while read AuxLine
do
user_search=`echo $AuxLine | tr -d "\r"`
awk -v idusr=${user_search} 'BEGIN { FS = "," } ; $0 ~ idusr { print $4}' users.txt
done <...

I am using ubuntu 10.10: #!/bin/bash

Scrutinizer , you are leading me closer to the answer :)
The file userson.txt "looked" exactly like in the code I wrote, but it was generated like this:

...

Oh yes, users.txt = UserUpdateList.

I changed the name in the post just to make it less confusing. I'll edit now.


But to add somethig: I just discovered this:


while read AuxLine
do
...

Which file is different?

I was typing myself the names of the files on the post so if there is any mistake with it I am sure the files do exist (they're being read properly)

Learning, stumbling! My progress in shell scripting is slow. Now I have this doubt:

I have the following file (users.txt):


AU0909,on
AU0309,off
AU0209,on
AU0109,off
And this file...

Hello,

I should have posted a response earlier, thanks itkmara for asking me to show the script. I was only thinking on that line and I did not realise the issue was the working path I was using....

Hello,

Following my learning of shell scripting.. I got stuck yet again.
If I execute this command on terminal:


$ sed "s/off/on/g" file > fileAUX


I successfully change the text off to...

Thank you balajesuri, that works

That feels embarrasing..

Now in my defense I can tell that I did look for more info. I found out something that in this case works: to change IFS environment...

I am just learning shell scripting and already I found out I have the bad habit of thinking that it is similar to php or c.

I learned some basics and now encountered this problem:

On shell it...