feat: 支持 -v 打印版本号、仓库地址与版权信息，构建时自动注入

Author: PrintNow

.github/workflows/release.yml

@@ -35,8 +35,9 @@ jobs:
           GOARCH: ${{ matrix.goarch }}
           CGO_ENABLED: "0"
         run: |
+          VERSION="${GITHUB_REF_NAME}"
           NAME=gping-${{ matrix.goos }}-${{ matrix.goarch }}
-          go build -trimpath -ldflags="-s -w" -o "${NAME}" .
+          go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o "${NAME}" .
           chmod +x "${NAME}"
           tar czf "${NAME}.tar.gz" "${NAME}"
           echo "ARCHIVE=${NAME}.tar.gz" >> "$GITHUB_ENV"

Makefile

@@ -10,9 +10,12 @@ GEOLITE_GZ_URL ?= https://raw.githubusercontent.com/wp-statistics/GeoLite2-City/
 
 .PHONY: build clean download-geolite geolite clean-geolite
 
+VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
+LDFLAGS := -s -w -X main.version=$(VERSION)
+
 build:
 	mkdir -p $(BIN_DIR)
-	go build -o $(OUTPUT) .
+	go build -trimpath -ldflags='$(LDFLAGS)' -o $(OUTPUT) .
 
 clean:
 	rm -f $(OUTPUT)

build.sh

@@ -22,7 +22,8 @@ case "$OS" in
 esac
 
 mkdir -p "$BIN_DIR"
-go build -o "$TARGET" .
+VERSION="$(git describe --tags --always --dirty 2>/dev/null || echo dev)"
+go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o "$TARGET" .
 chmod +x "$TARGET"
 
 printf '已编译: %s (%s/%s)\n' "$TARGET" "$OS" "$ARCH"

main.go

@@ -22,7 +22,12 @@ import (
 	"gping/geoip"
 )
 
-var errInvalidArgs = errors.New("invalid arguments")
+var (
+	version    = "dev"
+	repoURL    = "https://github.com/PrintNow/gping"
+	copyright  = "Copyright (c) 2026 Shine"
+	errInvalidArgs = errors.New("invalid arguments")
+)
 
 type ipFamily int
 
@@ -33,6 +38,10 @@ const (
 )
 
 func main() {
+	if len(os.Args) > 1 && os.Args[1] == "-v" {
+		fmt.Printf("gping %s\n%s\n%s\n", version, repoURL, copyright)
+		return
+	}
 	dnsServer, target, family, count, jsonOut, err := parseArgs(os.Args[1:])
 	if err != nil {
 		if errors.Is(err, errInvalidArgs) {
@@ -103,6 +112,7 @@ func main() {
 
 func printUsage() {
 	fmt.Println("Usage:")
+	fmt.Println("  gping -v")
 	fmt.Println("  gping <host> [-4|-6] [-c N] [-json]")
 	fmt.Println("  gping <dns> <host> [-4|-6] [-c N] [-json]")
 	fmt.Println("  Options may appear before, between, or after positional args.")