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DON'T use notepad; it will leave DOS style files behind. Use genuine unix editors!

Try this:
gacanepa@debian:~$ cat file.xml
hola
chau
me
voy
gacanepa@debian:~$ awk '{$1=$1}1' file.xml
hola
chau
me
voy
gacanepa@debian:~$
You may want to redirect the output of the...

@aniquebmx:

Why should it change the file? You didn't ask to change the current file, that's why.
The output you get on the shell should have the leading spaces, whatever they are including tabs,...

You can read all about it here- Regular expression - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Regular_expression)

sed 's/^[[:blank:]]*//' file.xml

Try:

sed 's/^[[:space:]]*//' file.xml

Close, but not quite: "sed" understands tabs just fine, enter them literally ("<b>" means literal blank, "<t>" means literal tab in the following):

sed 's/^[<b><t>]*//' /path/to/file

If you...

Assuming you don't have text separated by spaces or tabs in a single line

awk '{print $1}' file.xml

I notice a couple of things:

1. From your input file, you don't need the field separator.
2. From your output file, you don't need the ";" in the print statement, just replace with a comma.
3....

Could you explain more on what is the issue? What is the output you are getting?

I see that your input and output are .csv files. Did you copy paste the input data from excel to here?

I used a...

Using your input file in post#1, a slight modification of your own code snippet will work:awk '{a[$1]+=$2} END{for (i in a)print i "\t" a[i];}' file
05492U34 85



EDIT: Looking at your...

Updated rules.

Change: Code tags are now "the rule" and not just a guideline.