two git in the same folder one for code one for configuration

gitconf_procedure

# only folder b1 under configuration 
# all others files are program files 
#
# create and use a alias bash gitconf

mkdir PROG
echo content >> PROG/readme

mkdir PROG/FOLDER_A
echo content >> PROG/FOLDER_A/filea-1
echo content >> PROG/FOLDER_A/filea-2

mkdir PROG/FOLDER_B

mkdir PROG/FOLDER_B/FOLDER_B1
echo content >> PROG/FOLDER_B/FOLDER_B1/conf_fileb1-1

mkdir PROG/FOLDER_B/FOLDER_B2
echo content >> PROG/FOLDER_B/FOLDER_B2/fileb2-1





cd PROG
git init
cat >.git/info/exclude << EOL
/*
!/FOLDER_B
/FOLDER_B/*
!/FOLDER_B/FOLDER_B1
EOL
git add .
# only add
# conf_fileb1-1
git commit -m "first commit"
mv .git .gitconf
echo .git >> .gitconf/info/exclude


git init
echo .gitconf >> .git/info/exclude
echo /FOLDER_B/FOLDER_B1 >> .git/info/exclude

git add .
git status
# all files without FOLDER_B1

alias gitconf='git --git-dir=.gitconf'

gitconf status
# git --git-dir=.gitconf status
#
# nothing