fix: only create rc file if it doesn't exist (#10)

Makefile

@@ -9,12 +9,14 @@ install:
 	@install -v -d "$(BINDIR)/" && install -m 0755 -v hilbish "$(BINDIR)/hilbish"
 	@mkdir -p "$(LIBDIR)"
 	@cp libs preload.lua .hilbishrc.lua "$(LIBDIR)" -r
+	@echo /usr/bin/hilbish >> /etc/shells
 	@echo "Hilbish Installed"
 
 uninstall:
 	@rm -vrf \
 			"$(BINDIR)/hilbish" \
 			"$(LIBDIR)"
+	@sed '/\/usr\/bin\/hilbish/d' /etc/shells
 	@echo "Hilbish Uninstalled"
 
 clean:

main.go

@@ -59,12 +59,14 @@ func main() {
 	}
 
 	homedir, _ := os.UserHomeDir()
+	if _, err := os.Stat(homedir + "/.hilbishrc.lua"); os.IsNotExist(err) {
 		err = os.WriteFile(homedir + "/.hilbishrc.lua", input, 0644)
 		if err != nil {
 			fmt.Println("Error creating config file")
 			fmt.Println(err)
 			return
 		}
+	}
 
 	HandleSignals()
 	LuaInit()