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How to automatically add columns to an existing excel file?

In my excel table, the rows are features or parameters of devices, for example, device type, physical address, IP address, ....... The columns are different devices. one columns is for one device.

I need to extract these device information from configuration files using a Perl script and write in one existing excel table.  when using
while()  {
# write in data

from row 1, row 2, ...is easy.  using +1
but how to go from  column A,  column B,  column C,...?

If anybody wanna help me out, it would be greatly appreciated!
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2 Solutions
howruaz9Author Commented:
Thanks very much jbmraja

I try to use Spreadsheet::WriteExce, but it failed as below.

Can't locate Spreadsheet/WriteExcel.pm in @INC (@INC contains: C:/Perl/site/lib
C:/Perl/lib .) at xls1.txt line 4.
BEGIN failed--compilation aborted at xls1.txt line 4.

The line 4:  use Spreadsheet::WriteExcel;

You need to install that module.  If you are using the ActiveState distro, you can do so by running this:
    ppm install Spreadsheet::WriteExcel

If you are using a diff distro... which one are you using?
howruaz9Author Commented:
I'm using ActivePerl-

ppm install Spreadsheet::WriteExcel
ppm install Spreadsheet::ParseExcel

Both work very well.  Thanks so much Adam314!

howruaz9Author Commented:
Adam314 and Jbmraja, I really appreciate your time, patience and kind help!
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