awk \u4e2d\u7684\u6bd4\u8f83\u8fd0\u7b97\u7b26\u662f\u4ec0\u4e48\uff1f<\/strong><\/div>\n
awk \u4e2d\u7684\u6bd4\u8f83\u8fd0\u7b97\u7b26\u7528\u4e8e\u6bd4\u8f83\u5b57\u7b26\u4e32\u548c\u6216\u8005\u6570\u503c\uff0c\u5305\u62ec\u4ee5\u4e0b\u7c7b\u578b\uff1a<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\u00a0<\/caption>\n
\u7b26\u53f7<\/td>\n \u4f5c\u7528<\/td>\n<\/tr>\n
><\/td>\n \u5927\u4e8e<\/td>\n<\/tr>\n
<<\/td>\n \u5c0f\u4e8e<\/td>\n<\/tr>\n
>=<\/td>\n \u5927\u4e8e\u7b49\u4e8e<\/td>\n<\/tr>\n
<=<\/td>\n \u5c0f\u4e8e\u7b49\u4e8e<\/td>\n<\/tr>\n
==<\/td>\n \u7b49\u4e8e<\/td>\n<\/tr>\n
!=<\/td>\n \u4e0d\u7b49\u4e8e<\/td>\n<\/tr>\n
some_value ~ \/ pattern\/<\/td>\n \u5982\u679c some_value \u5339\u914d\u6a21\u5f0f pattern\uff0c\u5219\u8fd4\u56de true<\/td>\n<\/tr>\n
some_value !~ \/ pattern\/<\/td>\n \u5982\u679c some_value \u4e0d\u5339\u914d\u6a21\u5f0f pattern\uff0c\u5219\u8fd4\u56de true<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u73b0\u5728\u6211\u4eec\u901a\u8fc7\u4f8b\u5b50\u6765\u719f\u6089 awk \u4e2d\u5404\u79cd\u4e0d\u540c\u7684\u6bd4\u8f83\u8fd0\u7b97\u7b26\u3002<\/p>\n
\u4f8b\u5b50\u4e00\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u6587\u4ef6\u540d\u4e3a food_list.txt \u7684\u6587\u4ef6\uff0c\u91cc\u9762\u5305\u62ec\u4e0d\u540c\u98df\u7269\u7684\u8d2d\u4e70\u5217\u8868\u3002\u6211\u60f3\u7ed9\u98df\u7269\u6570\u91cf\u5c0f\u4e8e\u6216\u7b49\u4e8e 30 \u7684\u7269\u54c1\u6240\u5728\u884c\u7684\u540e\u9762\u52a0\u4e0a (**)<\/p>\n
File \u2013 food_list.txt\r\nNo Item_Name Quantity Price\r\n1 Mangoes 45 $3.45\r\n2 Apples 25 $2.45\r\n3 Pineapples 5 $4.45\r\n4 Tomatoes 25 $3.45\r\n5 Onions 15 $1.45\r\n6 Bananas 30 $3.45\r\n<\/pre>\n
Awk \u4e2d\u4f7f\u7528\u6bd4\u8f83\u8fd0\u7b97\u7b26\u7684\u901a\u7528\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
# \u8868\u8fbe\u5f0f { \u52a8\u4f5c; }<\/pre>\n
\u4e3a\u4e86\u5b9e\u73b0\u521a\u624d\u7684\u76ee\u7684\uff0c\u6267\u884c\u4e0b\u9762\u7684\u547d\u4ee4\uff1a<\/p>\n
# awk '$3 <= 30 { printf \"%s\/t%s\/n\", $0,\"**\" ; } $3 > 30 { print $0 ;}' food_list.txt\r\n\r\nNo Item_Name` Quantity Price\r\n1 Mangoes 45 $3.45\r\n2 Apples 25 $2.45 **\r\n3 Pineapples 5 $4.45 **\r\n4 Tomatoes 25 $3.45 **\r\n5 Onions 15 $1.45 **\r\n6 Bananas 30 $3.45 **\r\n<\/pre>\n
\u5728\u521a\u624d\u7684\u4f8b\u5b50\u4e2d\uff0c\u53d1\u751f\u5982\u4e0b\u4e24\u4ef6\u91cd\u8981\u7684\u4e8b\u60c5\uff1a<\/p>\n
\n
\u7b2c\u4e00\u4e2a\u201c\u8868\u8fbe\u5f0f<\/strong> {\u52a8\u4f5c;}\u201d\u7ec4\u5408\u4e2d\uff0c $3 <= 30 { printf \u201c%s\/t%s\/n\u201d, $0,\u201d**\u201d ; } \u6253\u5370\u51fa\u6570\u91cf\u5c0f\u4e8e\u7b49\u4e8e30\u7684\u884c\uff0c\u5e76\u4e14\u5728\u540e\u9762\u589e\u52a0 (**) \u3002\u7269\u54c1\u7684\u6570\u91cf\u662f\u901a\u8fc7 $3 \u8fd9\u4e2a\u57df\u53d8\u91cf\u83b7\u5f97\u7684\u3002<\/li>\n
\u7b2c\u4e8c\u4e2a\u201c\u8868\u8fbe\u5f0f<\/strong> {\u52a8\u4f5c;}\u201d\u7ec4\u5408\u4e2d\uff0c $3 > 30 { print $0 ;} \u539f\u6837\u8f93\u51fa\u6570\u91cf\u5c0f\u4e8e\u7b49\u4e8e 30 \u7684\u884c\u3002<\/li>\n<\/ul>\n
\u518d\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
# awk '$3 <= 20 { printf \"%s\/t%s\/n\", $0,\"TRUE\" ; } $3 > 20 { print $0 ;} ' food_list.txt \r\n\r\nNo Item_Name Quantity Price\r\n1 Mangoes 45 $3.45\r\n2 Apples 25 $2.45\r\n3 Pineapples 5 $4.45 TRUE\r\n4 Tomatoes 25 $3.45\r\n5 Onions 15 $1.45 TRUE\r\n6 Bananas 30 $3.45\r\n<\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u60f3\u901a\u8fc7\u5728\u884c\u7684\u672b\u5c3e\u589e\u52a0 (TRUE) \u6765\u6807\u8bb0\u6570\u91cf\u5c0f\u4e8e\u7b49\u4e8e20\u7684\u884c\u3002<\/p>\n
\u603b\u7ed3<\/strong><\/div>\n
\u8fd9\u662f\u4e00\u7bc7\u5bf9 awk \u4e2d\u7684\u6bd4\u8f83\u8fd0\u7b97\u7b26\u4ecb\u7ecd\u6027\u7684\u6307\u5f15\uff0c\u56e0\u6b64\u4f60\u9700\u8981\u5c1d\u8bd5\u5176\u4ed6\u9009\u9879\uff0c\u53d1\u73b0\u66f4\u591a\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n
\u5982\u679c\u4f60\u9047\u5230\u6216\u8005\u60f3\u5230\u4efb\u4f55\u95ee\u9898\uff0c\u8bf7\u5728\u4e0b\u9762\u8bc4\u8bba\u533a\u7559\u4e0b\u8bc4\u8bba\u3002\u8bf7\u8bb0\u5f97\u9605\u8bfb awk \u7cfb\u5217\u4e0b\u4e00\u90e8\u5206\u7684\u6587\u7ae0\uff0c\u90a3\u91cc\u6211\u5c06\u4ecb\u7ecd\u7ec4\u5408\u8868\u8fbe\u5f0f\u3002<\/p>\n
\n
\u539f\u6587\u6765\u81ea\uff1ahttps:\/\/linux.cn\/article-7602-1.html<\/a><\/p>\n
\u672c\u6587\u5730\u5740\uff1a http:\/\/lrxjmw.cn\/awk-comparison-operator.html<\/a>\u7f16\u8f91\u5458\uff1a\u82cf\u897f\u4e91\uff0c\u5ba1\u6838\u5458\uff1a\u9676\u6b66\u6770<\/span><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"
\u5bf9\u4e8e \u4f7f\u7528 awk \u547d\u4ee4\u7684\u7528\u6237\u6765\u8bf4\uff0c\u5904\u7406\u4e00\u884c\u6587\u672c\u4e2d\u7684\u6570\u5b57\u6216\u8005\u5b57\u7b26\u4e32\u65f6\uff0c\u4f7f\u7528\u6bd4\u8f83\u8fd0\u7b97\u7b26\u6765\u8fc7\u6ee4\u6587\u672c\u548c\u5b57\u7b26\u4e32\u662f\u5341\u5206\u65b9\u4fbf\u7684\u3002<\/p>\n","protected":false},"author":63,"featured_media":23543,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-22922","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/22922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/63"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=22922"}],"version-history":[{"count":11,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/22922\/revisions"}],"predecessor-version":[{"id":278995,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/22922\/revisions\/278995"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/23543"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=22922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=22922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=22922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}