gdalinfo [--help-general] [-json] [-mm] [-stats] [-hist] [-nogcp] [-nomd]
         [-norat] [-noct] [-nofl] [-checksum] [-proj4]
         [-listmdd] [-mdd domain|`all`]* [-wkt_format WKT1|WKT2|...]
         [-sd subdataset] [-oo NAME=VALUE]* datasetname
-json：以json格式输出
-mm：重新计算最小最大值
-stats：统计值
-hist：直方图
-sd：子数据集