Makefile for managing DST(don't starve together) server

Makefile

CMDPKGURL := "https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz"
CMDPATH := steamcmd
CMDFILE := steamcmd.sh

GAMEPATH := "Steam/steamapps/common/Don't Starve Together Dedicated Server/bin"
GAMEFILE := dontstarve_dedicated_server_nullrenderer

DATAPATH := $(PWD)/.klei
SAVEFILE := DoNotStarveServer
SAVEFILECAVE := DoNotStarveCaves
BAKPATH := dst_backup

MODSETPATH := "Steam/steamapps/common/Don't Starve Together Dedicated Server/mods"
MODFILE := "dedicated_server_mods_setup.lua"

TIMESTR = $(shell date '+%F-%H-%M')

.PHONY: set-mod
set-mod:
	@echo "Open mod setting file"
	vim $(MODSETPATH)/$(MODFILE)

.PHONY: prep-sys
prep-sys:
	@echo "System Library Preparing"
	sudo apt install -y screen lib32gcc1 lib32stdc++6 libcurl4-gnutls-dev
	@echo "System Library Prepare Finished"

.PHONY: prep-cmd
prep-cmd:
	@echo "Steam Command Line Files Preparing"
ifeq ($(wildcard $(CMDPATH)),)
	mkdir -p $(CMDPATH) && \
		cd $(CMDPATH) && \
		wget $(CMDPKGURL) && \
		tar -xvzf steamcmd_linux.tar.gz
endif
	@echo "Steam Command Line Files Prepare Finished"

.PHONY: prep
prep: prep-sys prep-cmd

.PHONY: prep-srv
prep-srv: prep-cmd
	@echo "Preparing Server Files"
	$(CMDPATH)/$(CMDFILE) +login anonymous +app_update 343050 validate +quit

.PHONY: prep-srv-cave
prep-srv-cave: prep-cmd
	@echo "Preparing Cave Server Files"
	$(CMDPATH)/$(CMDFILE) +login anonymous +app_update 343050 -beta cavesbeta validate +quit

.PHONY: start
start:
	screen -dm -S "dst_master" \
	        $(GAMEPATH)/$(GAMEFILE) -console \
		-cluster $(SAVEFILE) \
		-shard Master

.PHONY: start-cave
start-cave:
	screen -dm -S "dst_cave" \
		$(GAMEPATH)/$(GAMEFILE) -console \
		-cluster $(SAVEFILECAVE) \
		-shard Caves

.PHONY: backup
backup:
	@echo "Choose File To Backup"
	if [ -d $(DATAPATH) ]; then \
		mkdir -p $(BAKPATH); \
		$(MAKE) backup-save; \
		$(MAKE) backup-save-cave; \
	fi

backup-save:
	if [ -d $(DATAPATH)/$(SAVEFILE) ]; then \
		tar -czf $(SAVEFILE)_$(TIMESTR).tar.gz -C $(DATAPATH) $(SAVEFILE) && \
		mv $(SAVEFILE)_$(TIMESTR).tar.gz $(BAKPATH)/ ;\
		echo "File $(SAVEFILE) Is Backuped" \
	fi

backup-save-cave:
	if [ -d $(DATAPATH)/$(SAVEFILECAVE) ]; then \
		tar -czf $(SAVEFILECAVE)_$(TIMESTR).tar.gz -C $(DATAPATH) $(SAVEFILECAVE) && \
		mv $(SAVEFILECAVE)_$(TIMESTR).tar.gz $(BAKPATH)/ ;\
		echo "File $(SAVEFILECAVE) Is Backuped" \
	fi