Install's bashrc.d (or other rc.d's)

bashrcd.sh

#/usr/bin/env sh

sub_install () {
        install_name=$1
        install_to=$2
        install_source=${3%/}

        [ -d $install_source ] || mkdir -p $install_source; chmod 700 $install_source;
        [ ! -w $install_to ] && touch $install_to
        if ! grep -Fxq "# $install_name" "$install_to"; then
                (
                        printf '\n# %s\n' $install_name
                        printf "for f in \$(printf '%s' %s/* | sort -V ); do [ -r \$f ] && . \$f;done\n" \
                                '%s\n' "$install_source"
                ) >>$install_to
        fi
}

sub_test () {
        testrun=/tmp/testrun
        sub_install Test $testrun ${testrun}.d/
        i=0
        while [ $i -ne 5 ]; do
                i=$(($i+1))
                echo "echo Loading $i" > ${testrun}.d/$i.sh
        done
        (bash $testrun)
        sub_install Test $testrun ${testrun}.d/
        (bash $testrun)
        rm -rf $testrun ${testrun}.d
}
#sub_test


sub_install bashrc.d ~/.bashrc ~/.bashrc.d