minor update README

README.md

@@ -4,19 +4,19 @@ CLI tool to manage cloudflare DNS records
 
 ### Using [go](https://go.dev)
 ```bash
-❯ go install go.balki.me/cloudflare-dns-cli@latest
+go install go.balki.me/cloudflare-dns-cli@latest
 
 # Run directly without installing
-❯ go run go.balki.me/cloudflare-dns-cli@latest -h
+go run go.balki.me/cloudflare-dns-cli@latest -h
 
 ```
 ### Using [docker](https://www.docker.com)
 ```bash
-❯ mkdir -p $HOME/bin
+mkdir -p $HOME/bin
-❯ docker run --pull=always --rm -v "$HOME/bin:/op" golang sh -c "go install go.balki.me/cloudflare-dns-cli@latest && install -o $(id -u) -g $(id -g) /go/bin/cloudflare-dns-cli /op/"
+docker run --pull=always --rm -v "$HOME/bin:/op" golang sh -c "go install go.balki.me/cloudflare-dns-cli@latest && install -o $(id -u) -g $(id -g) /go/bin/cloudflare-dns-cli /op/"
 
 # Run directly without installing
-❯ docker run --pull=always --rm golang go run go.balki.me/cloudflare-dns-cli@latest -h
+docker run --pull=always --rm golang go run go.balki.me/cloudflare-dns-cli@latest -h
 ```
 
 ## Features

go.mod

@@ -1,6 +1,6 @@
 module go.balki.me/cloudflare-dns-cli
 
-go 1.20
+go 1.21
 
 require (
 	github.com/libdns/cloudflare v0.1.0

main.go

@@ -113,6 +113,16 @@ func main() {
 	flag.BoolVar(&mx, "m", mx, "Set mx record with cname value")
 	flag.Parse()
 
+	if token == "" {
+		flag.Usage()
+		log.Panicln("empty cloudflare api token")
+	}
+
+	if domain == "" {
+		flag.Usage()
+		log.Panicln("empty domain name")
+	}
+
 	provider := cloudflare.Provider{APIToken: token}
 	zone := domain + "."