[Bug] ./scripts/dev_setup.sh misidentified package manager

[jiangying000]

🐛 Bug

running ./scripts/dev_setup.sh on my ubuntu, the script identified yum as package manager

because somebody installed yum on the shared ubuntu server, the script misidentified the package manager.

screenshot:

[jiangying000]

move/scripts/dev_setup.sh

Lines 148 to 153 in 1a0214a

	echo "Installing ${package}."
	if [[ "$PACKAGE_MANAGER" == "yum" ]]; then
	"${PRE_COMMAND[@]}" yum install "${package}" -y
	elif [[ "$PACKAGE_MANAGER" == "apt-get" ]]; then
	"${PRE_COMMAND[@]}" apt-get install "${package}" --no-install-recommends -y
	echo apt-get install result code: $?

current scripts/dev_setup.sh identifies binary programs, may be it's more accurate to identify distributions, like:

declare -A osInfo;
osInfo[/etc/redhat-release]=yum
osInfo[/etc/arch-release]=pacman
osInfo[/etc/gentoo-release]=emerge
osInfo[/etc/SuSE-release]=zypp
osInfo[/etc/debian_version]=apt-get
osInfo[/etc/alpine-release]=apk

for f in ${!osInfo[@]}
do
    if [[ -f $f ]];then
        echo Package manager: ${osInfo[$f]}
    fi
done

see also:
https://unix.stackexchange.com/questions/46081/identifying-the-system-package-manager