Installing a "copy" of an installation on a new computer

[Tom Hall]

On Wed, Mar 10, 2010 at 08:38:56AM +0100, Olle Olsson wrote:
> Hi,
> 
> I found the following
> Â  http://www.cygwin.com/ml/cygwin/2006-05/msg00753.html
> which might provide one practical solution. Will try this.
> /olle

I was having trouble coming up with a sed command to convert all the version
numbers to 0.0-0, so instead, I 'cut' all the package names from
/etc/setup/installed.db and built a batch file to call setup.exe with the -P
switch.

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#!/usr/bin/sh
echo -n setup.exe -P $(
    for p in $(cut -d \  -f 1 /etc/setup/installed.db)
    do
        if [ "$p" == "INSTALLED.DB" ] 
        then
            continue
        elif [ "$p" == "_update-info-dir" ] 
        then
            continue
        else
            echo -n $p,
            fi
        done) > portcyg.bat

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