{"id":2292,"date":"2017-12-08T06:38:55","date_gmt":"2017-12-08T06:38:55","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/?p=2292"},"modified":"2021-02-27T09:22:28","modified_gmt":"2021-02-27T09:22:28","slug":"remove-blank-line-using-grep-and-sed","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/remove-blank-line-using-grep-and-sed\/","title":{"rendered":"Remove blank line using Grep and sed"},"content":{"rendered":"

scmuser created the topic: Remove blank line using Grep and sed<\/strong>
\nHi,<\/p>\n

How do you remove blank line using grep and sed in shell scripting?<\/p>\n

rajeshkumar replied the topic: Re: Remove blank line using Grep and sed<\/strong><\/p>\n

grep -v \"^$\" filename > newfilename<\/code><\/p>\n

The ^$ within the quotes is a regular expression: ^=beginning of line, $=end of line, with no characters between.<\/p>\n

To store output to another file use redirection operator:<\/p>\n

$ sed ‘\/^$\/d’ \/tmp\/data.txt > \/tmp\/output.txt<\/p>\n

Regards,
\nRajesh Kumar
\nTwitt me @ twitter.com\/RajeshKumarIn<\/a><\/p>\n

rajeshkumar replied the topic: Re: Remove blank line using Grep and sed<\/strong>
\nThe above script will work only if you have no character in the blank line but most of the time it can happen that Tab can be possle in blank line….<\/p>\n

so for this situation u should try following..<\/p>\n

sed '\/^[PRESS TAB]*$\/d' filename<\/code><\/p>\n

Regards,
\nRajesh Kumar
\nTwitt me @ twitter.com\/RajeshKumarIn<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

scmuser created the topic: Remove blank line using Grep and sed Hi, How do you remove blank line using grep […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[454],"tags":[475],"class_list":["post-2292","post","type-post","status-publish","format-standard","hentry","category-shell-script","tag-grep"],"yoast_head":"\nRemove blank line using Grep and sed - scmGalaxy<\/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:\/\/www.scmgalaxy.com\/tutorials\/remove-blank-line-using-grep-and-sed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Remove blank line using Grep and sed - scmGalaxy\" \/>\n<meta property=\"og:description\" content=\"scmuser created the topic: Remove blank line using Grep and sed Hi, How do you remove blank line using grep […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.scmgalaxy.com\/tutorials\/remove-blank-line-using-grep-and-sed\/\" \/>\n<meta property=\"og:site_name\" content=\"scmGalaxy\" \/>\n<meta property=\"article:published_time\" content=\"2017-12-08T06:38:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-02-27T09:22:28+00:00\" \/>\n<meta name=\"author\" content=\"scmgalaxy K\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"scmgalaxy K\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/remove-blank-line-using-grep-and-sed\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/remove-blank-line-using-grep-and-sed\\\/\"},\"author\":{\"name\":\"scmgalaxy K\",\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/#\\\/schema\\\/person\\\/fc12ad190f540e79460243c81148d102\"},\"headline\":\"Remove blank line using Grep and sed\",\"datePublished\":\"2017-12-08T06:38:55+00:00\",\"dateModified\":\"2021-02-27T09:22:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/remove-blank-line-using-grep-and-sed\\\/\"},\"wordCount\":146,\"commentCount\":0,\"keywords\":[\"Grep\"],\"articleSection\":[\"Shell Script\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/remove-blank-line-using-grep-and-sed\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/remove-blank-line-using-grep-and-sed\\\/\",\"url\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/remove-blank-line-using-grep-and-sed\\\/\",\"name\":\"Remove blank line using Grep and sed - 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