{"id":833,"date":"2021-01-14T14:24:58","date_gmt":"2021-01-14T22:24:58","guid":{"rendered":"http:\/\/gantovnik.com\/bio-tips\/?p=833"},"modified":"2021-01-14T14:38:54","modified_gmt":"2021-01-14T22:38:54","slug":"147-count-the-total-number-of-fields-in-a-file-using-awk","status":"publish","type":"post","link":"https:\/\/gantovnik.com\/bio-tips\/2021\/01\/147-count-the-total-number-of-fields-in-a-file-using-awk\/","title":{"rendered":"#147 Count the total number of fields in a file using awk"},"content":{"rendered":"<p>#147 Count the total number of fields in a file using awk<\/p>\n<p>Assume we have &#8220;test1.txt&#8221; file with data in columns:<\/p>\n<pre class=\"brush: python; title: ; notranslate\" title=\"\">\r\na b c d\r\ne f g h\r\ni j k l\r\n1 2 3 4\r\n<\/pre>\n<p>Save the following awk script in the file &#8220;ex147.awk&#8221;<\/p>\n<pre class=\"brush: python; title: ; notranslate\" title=\"\">\r\n#!\/bin\/awk -f\r\n{ total += NF } \r\nEND { print total }\r\n<\/pre>\n<p>Run file &#8220;ex147run.txt&#8221;<\/p>\n<pre class=\"brush: python; title: ; notranslate\" title=\"\">\r\nawk -f ex147.awk test1.txt\r\n<\/pre>\n<p>using <\/p>\n<pre class=\"brush: python; title: ; notranslate\" title=\"\">\r\n.\/ex147run.txt\r\n<\/pre>\n<p>The result is 16.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>#147 Count the total number of fields in a file using awk Assume we have &#8220;test1.txt&#8221; file with data in columns: a b c d e f g h i j k l 1 2 3 4 Save the following awk script in the file &#8220;ex147.awk&#8221; #!\/bin\/awk -f { total += NF } END { [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_lmt_disableupdate":"yes","_lmt_disable":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[18],"tags":[],"class_list":["post-833","post","type-post","status-publish","format-standard","hentry","category-awk"],"modified_by":"gantovnik","jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8bH0k-dr","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":613,"url":"https:\/\/gantovnik.com\/bio-tips\/2020\/09\/93-summing-values-of-a-column-using-awk-command\/","url_meta":{"origin":833,"position":0},"title":"#93 Summing values of a column using awk","author":"gantovnik","date":"2020-09-09","format":false,"excerpt":"#93 Summing values of a column using awk command Assume we have \"test1.txt\" file with data in columns: [code language=\"python\"] a,a,aa,1 a,a,aa,2 d,d,dd,7 d,d,dd,9 d,dd,d,0 d,d,dd,23 d,d,dd,152 d,d,dd,7 d,d,dd,5 f2,f2,f2,5.5 [\/code] Save the following awk script in the file \"ex93.txt\" [code language=\"python\"] #The -F',' tells awk that the field separator\u2026","rel":"","context":"In &quot;awk&quot;","block_context":{"text":"awk","link":"https:\/\/gantovnik.com\/bio-tips\/category\/awk\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":616,"url":"https:\/\/gantovnik.com\/bio-tips\/2020\/09\/94-average-of-values-of-a-column-using-awk\/","url_meta":{"origin":833,"position":1},"title":"#94 Average of  values of a column using awk","author":"gantovnik","date":"2020-09-09","format":false,"excerpt":"#94 Average of values of a column using awk command Assume we have \"test1.txt\" file with data in columns: [code language=\"python\"] a,a,aa,1 a,a,aa,2 d,d,dd,7 d,d,dd,9 d,dd,d,0 d,d,dd,23 d,d,dd,152 d,d,dd,7 d,d,dd,5 f2,f2,f2,5.5 [\/code] Save the following awk script in the file \"ex94.awk\" [code language=\"python\"] #!\/bin\/awk -f { sum += $4 }\u2026","rel":"","context":"In &quot;awk&quot;","block_context":{"text":"awk","link":"https:\/\/gantovnik.com\/bio-tips\/category\/awk\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":842,"url":"https:\/\/gantovnik.com\/bio-tips\/2021\/01\/148-print-lines-containing-words-bar-gap-quad-and-count-number-of-lines-in-each-group-using-awk\/","url_meta":{"origin":833,"position":2},"title":"#148 Print lines containing words &#8220;BAR&#8221;, &#8220;GAP&#8221;, &#8220;QUAD&#8221; and count number of lines in each group using awk","author":"gantovnik","date":"2021-01-15","format":false,"excerpt":"#148 Print lines containing words \"BAR\", \"GAP\", \"QUAD\" and count number of lines in each group using awk Save the following awk script in the file \"ex148.awk\" [code language=\"python\"] #!\/bin\/awk -f \/GAP\/{print;n_gap++} \/BAR\/{print;n_bar++} \/QUAD\/{print;n_quad++} END { printf \"n_gap=%i\\n\",n_gap; printf \"n_bar=%i\\n\",n_bar;printf \"n_quad=%i\\n\",n_quad } [\/code] Run file \"ex148run.txt\" [code language=\"python\"] awk -f\u2026","rel":"","context":"In &quot;awk&quot;","block_context":{"text":"awk","link":"https:\/\/gantovnik.com\/bio-tips\/category\/awk\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":867,"url":"https:\/\/gantovnik.com\/bio-tips\/2021\/02\/156-filtering-content-from-files-using-awk\/","url_meta":{"origin":833,"position":3},"title":"#156 Filtering content from files using awk","author":"gantovnik","date":"2021-02-09","format":false,"excerpt":"#156 Displaying and filtering the content of files with awk Using the following command, we can print all lines from the file: [code language=\"python\"] awk ' { print } ' \/etc\/passwd [\/code] This is equivalent to using the $0 variable. The $0 variables refers to the complete line. [code language=\"python\"]\u2026","rel":"","context":"In &quot;awk&quot;","block_context":{"text":"awk","link":"https:\/\/gantovnik.com\/bio-tips\/category\/awk\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1883,"url":"https:\/\/gantovnik.com\/bio-tips\/2023\/07\/357-joining-groups-of-lines-in-a-text-file-using-awk\/","url_meta":{"origin":833,"position":4},"title":"#357 Joining groups of lines in a text file using awk","author":"gantovnik","date":"2023-07-14","format":false,"excerpt":"Joining groups of lines in a text file. The prints three consecutive lines of text on the same line, after which a linefeed is printed. This has the effect of \"joining\" every three consecutive lines of text. example.txt [code language=\"python\"] 1 2 3 4 5 6 7 8 9 [\/code]\u2026","rel":"","context":"In &quot;awk&quot;","block_context":{"text":"awk","link":"https:\/\/gantovnik.com\/bio-tips\/category\/awk\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1886,"url":"https:\/\/gantovnik.com\/bio-tips\/2023\/07\/360-print-the-number-of-fields-in-each-line-where-using-awk-is-the-field-delimiter\/","url_meta":{"origin":833,"position":5},"title":"#360 Print the number of fields in each line where using awk. &#8220;,&#8221; is the field delimiter.","author":"gantovnik","date":"2023-07-15","format":false,"excerpt":"Print the number of fields in each line using awk. \",\" is the field delimiter. example.txt [code language=\"python\"] GAP,5000008,344229,-0.00000873,0.00000000,0.00000000 QUAD,5000009,389633,-62.98719000,4.20363900,-14.08507000,-5.83411800,-2.50325100,-4.89406400,14.13978000,1.43138700 TRIA,5000009,389634,-120.91420000,150.57080000,-76.72402000,0.96178280,-0.36827340,1.96346300,-1.02116100,-41.11020000 QUAD,5000009,389635,-15.21044000,0.99932950,3.18402900,-0.15678900,0.23568760,-0.34962440,0.21704630,-0.38061680 QUAD,5000009,389636,1.33232100,-65.55149000,11.67951000,-0.72253810,-0.16559730,0.68029730,-0.87976630,0.07846473 BUSH,5000008,377944,107.45720000,25.92157000,3.61063300,2.17414500,0.00000000,0.00000000 BUSH,5000008,377945,108.76870000,25.35708000,3.30875900,2.66002100,0.00000000,0.00000000 [\/code] ex360.txt [code language=\"python\"] awk -F\",\" '{print NF,\":\",$0}' example.txt [\/code] output: [code language=\"python\"] 6 : GAP,5000008,344229,-0.00000873,0.00000000,0.00000000 11 : QUAD,5000009,389633,-62.98719000,4.20363900,-14.08507000,-5.83411800,-2.50325100,-4.89406400,14.13978000,1.43138700 11 : TRIA,5000009,389634,-120.91420000,150.57080000,-76.72402000,0.96178280,-0.36827340,1.96346300,-1.02116100,-41.11020000 11 : QUAD,5000009,389635,-15.21044000,0.99932950,3.18402900,-0.15678900,0.23568760,-0.34962440,0.21704630,-0.38061680\u2026","rel":"","context":"In &quot;awk&quot;","block_context":{"text":"awk","link":"https:\/\/gantovnik.com\/bio-tips\/category\/awk\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/posts\/833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/comments?post=833"}],"version-history":[{"count":0,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/posts\/833\/revisions"}],"wp:attachment":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/media?parent=833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/categories?post=833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/tags?post=833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}