{"id":12332,"date":"2022-09-30T11:58:45","date_gmt":"2022-09-30T06:28:45","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-why-does-my-awk-command-filter-my-text-without-a-for-loop-but-not-when-a-for-loop-is-added\/"},"modified":"2022-09-30T11:58:45","modified_gmt":"2022-09-30T06:28:45","slug":"solved-why-does-my-awk-command-filter-my-text-without-a-for-loop-but-not-when-a-for-loop-is-added","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-why-does-my-awk-command-filter-my-text-without-a-for-loop-but-not-when-a-for-loop-is-added\/","title":{"rendered":"[Solved] Why does my Awk command filter my text without a for loop but not when a for loop is added?"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-42755036\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"42755036\" data-parentid=\"42754985\" data-score=\"3\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>I already told you how to approach problems like this. See https:\/\/stackoverflow.com\/a\/42753485\/1745001 and just add a line to that answer that says:<\/p>\n<pre><code>f[\"fechaName\"]==5{for (i=1;i&lt;=3;i++) print}\n<\/code><\/pre>\n<p>Look:<\/p>\n<pre><code>$ cat tst.awk\nBEGIN {\n    FPAT = \"([^,]*)|(\\\"[^\\\"]+\\\")\"\n    OFS = \",\"\n}\n{\n    delete f\n    for (i=1; i&lt;=NF; i++) {\n        split($i,t,\/[[:space:]\":]+\/)\n        f[t[2]] = t[3]\n    }\n}\nf[\"fechaName\"]==5 { for (i=1;i&lt;=3;i++) print }\n\n$ awk -f tst.awk file\n\"fechaName\": \"5\",\"xxxxx\": \"John\",   \"xxxxx\": \"John\",    \"firstName\": \"beto2\", \"xxxxx\": \"John\",\"lastName\": \"444\", \"xxxxx\": \"John\",\"xxxxx\": \"John\",\n\"fechaName\": \"5\",\"xxxxx\": \"John\",   \"xxxxx\": \"John\",    \"firstName\": \"beto2\", \"xxxxx\": \"John\",\"lastName\": \"444\", \"xxxxx\": \"John\",\"xxxxx\": \"John\",\n\"fechaName\": \"5\",\"xxxxx\": \"John\",   \"xxxxx\": \"John\",    \"firstName\": \"beto2\", \"xxxxx\": \"John\",\"lastName\": \"444\", \"xxxxx\": \"John\",\"xxxxx\": \"John\",\n<\/code><\/pre>\n<p>wrt debugging the script in your question, you wrote:<\/p>\n<pre><code>{for(i=1;i&lt;=3;i++) {match($2, \/5\"\/)  ;{  print $0}}}\n<\/code><\/pre>\n<p>which says &#8220;loop 3 times, calling match() but doing nothing with the result of that match() and unconditionally printing the current line&#8221;. You probably meant to write:<\/p>\n<pre><code>match($2, \/5\"\/) { for(i=1;i&lt;=3;i++) print }\n<\/code><\/pre>\n<p>but of course that approach is extremely fragile as it will produce false matches for various input values and so you should definitely NOT use it.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">8<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Why does my Awk command filter my text without a for loop but not when a for loop is added? <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] I already told you how to approach problems like this. See https:\/\/stackoverflow.com\/a\/42753485\/1745001 and just add a line to that answer that says: f[&#8220;fechaName&#8221;]==5{for (i=1;i&lt;=3;i++) print} Look: $ cat tst.awk BEGIN { FPAT = &#8220;([^,]*)|(\\&#8221;[^\\&#8221;]+\\&#8221;)&#8221; OFS = &#8220;,&#8221; } { delete f for (i=1; i&lt;=NF; i++) { split($i,t,\/[[:space:]&#8221;:]+\/) f[t[2]] = t[3] } } f[&#8220;fechaName&#8221;]==5 { &#8230; <a title=\"[Solved] Why does my Awk command filter my text without a for loop but not when a for loop is added?\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-why-does-my-awk-command-filter-my-text-without-a-for-loop-but-not-when-a-for-loop-is-added\/\" aria-label=\"More on [Solved] Why does my Awk command filter my text without a for loop but not when a for loop is added?\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[445],"class_list":["post-12332","post","type-post","status-publish","format-standard","hentry","category-solved","tag-awk"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Why does my Awk command filter my text without a for loop but not when a for loop is added? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-why-does-my-awk-command-filter-my-text-without-a-for-loop-but-not-when-a-for-loop-is-added\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Why does my Awk command filter my text without a for loop but not when a for loop is added? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] I already told you how to approach problems like this. See https:\/\/stackoverflow.com\/a\/42753485\/1745001 and just add a line to that answer that says: f[&quot;fechaName&quot;]==5{for (i=1;i&lt;=3;i++) print} Look: $ cat tst.awk BEGIN { FPAT = &quot;([^,]*)|(&quot;[^&quot;]+&quot;)&quot; OFS = &quot;,&quot; } { delete f for (i=1; i&lt;=NF; i++) { split($i,t,\/[[:space:]&quot;:]+\/) f[t[2]] = t[3] } } f[&quot;fechaName&quot;]==5 { ... 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