Shell 提取脚本传过来的参数

jetsung

Shell 提取脚本传过来的参数

方式二：推荐

# 处理参数信息
judgment_parameters() {
    local HELP=""
    while [[ "$#" -gt '0' ]]; do
        case "$1" in

        '-i' | '--image')
            if [[ -z "${2:-}" ]]; then
				echo "?error: Please specify the correct image name."
                exit 1
            fi
            IMAGE_NAME="${2}"
            shift
            ;;

        '-r' | '--registry')
            if [[ -z "${2:-}" ]]; then
				echo "error: Please specify the correct registry name."
                exit 1
            fi
            IMAGE_REGISTRY="${2}"
            shift
            ;;

        '-h' | '--help')
            HELP='1'
            break
            ;;

        *)
            echo "$0: unknown option -- $1"
            exit 1
            ;;

        esac
        shift
    done

    if [ -n "${HELP}" ]; then
        show_help
    fi
}

# 打印帮助信息
show_help() {
    echo "usage: $0 [ options ]"
    echo '  -i, --image    [IMAGE_NAME]          example: nginx:latest, my/nginx:latest'
    echo '  -r, --registry [REGISTRY_NAME]       options: g,gcr | h,ghcr | k,k8s | q,quay | m,mcr'
    echo '  -h, --help                           print help'
    exit 0
}

judgment_parameters "$@"

方式三：推荐

# 处理参数信息
judgment_parameters() {
    while [[ "$#" -gt '0' ]]; do
        case "$1" in
            '-a' | '--account') # Cloudflare 账号
                shift
                CLOUDFLARE_EMAIL="${1:?"error: Please specify the correct account."}"
                ;;
            '-d' | '--domain') # 记录域名
                shift
                DOMAIN="${1:?"error: Please specify the correct domain."}"
                # CHECK DOMAIN
                if [[ "$DOMAIN" != *"."* ]]; then
                    echo -e "\033[31mDOMAIN must be a domain name\033[0m"
                    exit 1
                fi
                ;;
            '-f' | '--force') # 拉取最新的 ip.txt
                FORCE="true"
                ;;
            '-s' | '--speed') # 下载速度下限
                shift
                SPEED="${1:?"error: Please specify the correct speed."}"
                # SPEED > 0
                if (( $(echo "$SPEED <= 0" | bc -l) )); then
                    echo -e "\033[31mSPEED must be greater than 0\033[0m"
                    exit 1
                fi  
                ;;
            '-c' | '--cdn') # API CDN
                shift
                API_CDN="${1:?"error: Please specify the correct cdn."}"
                # CEHCK WEB URL
                if [[ "$API_CDN" != *"/"* ]]; then
                    echo -e "\033[31mAPI_CDN must be a web url\033[0m"
                    exit 1
                fi
                ;;
            '-r' | '--cron') # 定时任务
                DO_CRON="install"
                if [ $# -ge 1 ] && [[ "$1" != -* ]]; then
                    DO_CRON="run"
                    shift         
                fi
                ;;				
            '-h' | '--help')
                show_help
                ;;
            *)
                echo "$0: unknown option -- $1" >&2
                exit 1
                ;;
        esac
        shift
    done
}

# 显示帮助信息
show_help() {
    cat <<EOF
usage: $0 [ options ]

  -h, --help                           print help
  -a, --account <account>              set Cloudflare account
  -d, --domain <domain>                set domain
  -r, --refresh                        refresh dns
  -s, --speed <speed>                  set download speed

e.g.: 
  $0 -a user@example.com -k api_key -d example.com -p cf -s 2 -n -o

e.g.:
  export CLOUDFLARE_API_KEY="api_key"
  export CLOUDFLARE_EMAIL="user@example.com"
  $0 -d example.com -p cf -s 2 -n -o
EOF
    exit 0
}

方式四：推荐

judgment_parameters() {
  while getopts "n:u:" opt; do
    case "$opt" in
      n)
        NAME="$OPTARG"
        ;;
      u)
        URL="$OPTARG"
        ;;
      \?)
        echo "Usage: $0 [-n <filename>] [-u <url>]"
        exit 1
        ;;
    esac
  done
}