我有一個 csv 文件，其格式為
input.csv
1,AREA,"POLYGON((103.855 1.27267,103.856 1.27316,103.851 1.27506,103.853 1.27941,103.853 1.2793,103.852 1.27879,103.852 1.27639,103.851 1.27624,103.851 1.27634,103.851 1.27661,103.851 1.27699,103.852 1.27985,103.852 1.28138,103.853 1.28188,103.853 1.28189,103.853 1.28058,103.853 1.28044,103.853 1.28048,103.853 1.28084,103.853 1.28206,103.853 1.28216,103.853 1.28205,103.853 1.28205,103.854 1.28196,103.854 1.28209,103.855 1.28141,103.855 1.2813,103.855 1.28086,103.856 1.28001,103.859 1.28528,103.859 1.28555,103.859 1.28556,103.859 1.28586,103.859 1.28587,103.859 1.28629,103.859 1.28662,103.859 1.28669,103.87 1.28157,103.873 1.27787,103.871 1.27586,103.863 1.26996,103.862 1.26924,103.861 1.2689,103.86 1.26869,103.859 1.26884,103.858 1.26921,103.856 1.2702,103.855 1.27088,103.856 1.27227,103.855 1.27253,103.851 1.27428,103.852 1.2739,103.855 1.27267))"
我想刪除尺寸不固定的第三列。我嘗試過
cut -d, -f3 --complement input.csv
但它工作不正常。
答案1
該cut工具不夠智能，無法辨識出第三列中的逗號不是分隔符號。
不過，您可以選擇一系列列：在本例中，-f1-2將選取第 1 列到第 2 列，從而排除第 3 列。
然而，對於一般的 CSV 處理，您需要更強大的解析器，例如 Python 和 Perl 等腳本語言中的解析器。