Re: help needed - transition from 32bits to 64bits

[marco atzeri <marco.atzeri@gmail.com>]

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On Thu, Jun 15, 2023 at 12:15 PM gh via Cygwin  wrote:
>
> Dear all,
>
> Sorry if this question was already answered somewhere in the FAQ.
>
>
>
> I am running a deprecated 32bits version, and want to switch to 64bits. Install procedure is easy, but does not cover one thing : I
> would like to preserve the list of packages I have installed, and minimize the change of paths in my windows environment (did not
> change anything for the last 10 years, so I don't want to dig into where are things).
>
>
>
> Currently, cygwin is in C:\cygwin, which I have moved to C:\cygwin-bck. I then want to install in the now almost empty C:\cygwin,
> but copying there the necessary config files so that setup-x86_64.exe knows which packages to download.
>
>
>
> Thanks in advance,
>
>
>
> Gilbert
>
Hi Gilbert,

No need to rename the directory as the Cygwin 64 bit will be installed
in C:\Cygwin64 folder

Attached the script that I use to reinstall my system on different computers.
It can be adapted to duplicate the 32bit in a 64 bit installation

Assuming your file list is not longer than 32K, this should work :

  chmod + x cyg-reinstall.sh
   sed -e "1d"  /etc/setup/installed.db | sed -e "s/ .*$//" > filelist.txt
  ./cyg-reinstall.sh -f  filelist.txt
  cp cyg-reinstall-x86.bat cyg-reinstall-x86_64.bat
  sed -i -e "s/setup-x86.exe/setup-x86_64.exe/" cyg-reinstall-x86_64.bat

if the  "filelist.txt" is too long you can split in multiple chunks, like:

   grep -v "^lib" filelist.txt > nolib-list.txt
   grep "^lib" filelist.txt > lib-list.txt

I usually need to split mine, as my installation hit the 32K limit of
command line

 wc -l *.txt
  2608 filelist.txt
  1297 lib-list.txt
  1311 nolib-list.txt

 ls -1s *.txt
40K filelist.txt
20K lib-list.txt
20K nolib-list.txt

Regards
Marco

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#!/bin/bash
#Copyright (c) 2021, 2023 Marco Atzeri
#All rights reserved.

#Redistribution and use in source and binary forms, with or without
#modification, are permitted provided that the following conditions are met:
#1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
#2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
#3. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by Marco Atzeri.
#4. Neither the name of the Marco Atzeri nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

#THIS SOFTWARE IS PROVIDED BY MARCO ATZERI ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MARCO ATZERI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
#SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Create a batch file to reinstall using setup-{ARCH}.exe
# all packages or the ones reported as incomplete
# or install from a list or remove from a list

# If you hit the length limit of command line in bash or CMD
#
# https://devblogs.microsoft.com/oldnewthing/20031210-00/?p=41553
# https://learn.microsoft.com/en-us/troubleshoot/windows-client/shell-experience/command-line-string-limitation
#
# the best way is to split the installation in multiples chunks

print_error=1

if [ $# -eq 1 ]
  then
    if [ $1 == "-I" ]
    then
      lista=$(mktemp)
      cygcheck -c | grep "Incomplete" > $lista
      print_error=0
    fi
    if [ $1 == "-A" ]
    then
      lista=$(mktemp)
      cygcheck -cd | sed -e "1,2d" > $lista
      print_error=0
    fi
fi

if [ $# -eq 2 ]
  then
    if [ $1 == "-f" -o $1 == "-r" ]
    then
      lista=$2
      print_error=0
    fi
fi

# error message if options are incorrect.
if [ $print_error -eq 1 ]
then
        echo -n "Usage : " $(basename $0)
        echo " [ -A | -I | -f filelist | -r filelist ]"
        echo "  create cyg-reinstall-{ARC}.bat from"
        echo "  options"
        echo "    -A  :  install All packages as reported by cygcheck"
        echo "    -I  :  install Incomplete packages as reported by cygcheck"
        echo "    -f  :  install packages in filelist (one per row)"
        echo "    -r  :  remove packages in filelist (one per row)"
        exit 1
fi

if [ $(arch) == "x86_64" ]
then
  A="x86_64"
else
  A="x86"
fi

# writing header
echo -n -e "setup-${A}.exe  " > cyg-reinstall-${A}.bat

# option  -x remove and  -P install
# for re-install packages we need both
if [ $1 == "-I" -o $1 == "-r" ]
then
  awk 'BEGIN{printf(" -x ")} NR==1{printf $1}{printf ",%s", $1}' ${lista} >> cyg-reinstall-${A}.bat
fi

if [ $1 == "-I" -o $1 == "-A" -o $1 == "-f" ]
then
  awk 'BEGIN{printf(" -P ")} NR==1{printf $1}{printf ",%s", $1} END { printf "\r\n pause "}' ${lista} >> cyg-reinstall-${A}.bat
fi

# execution permission for the script
chmod +x cyg-reinstall-${A}.bat