{"id":5498,"date":"2013-05-04T21:54:00","date_gmt":"2013-05-04T21:54:00","guid":{"rendered":""},"modified":"2026-04-18T22:45:48","modified_gmt":"2026-04-18T22:45:48","slug":"remove-lines-from-file","status":"publish","type":"post","link":"https:\/\/hellem.org\/wblog\/?p=5498","title":{"rendered":"Remove lines from file"},"content":{"rendered":"<p>While reviewing a SystemOut.log-file created by WebSphere I needed to remove all lines containing &#8220;SystemOut&#8221;. Luckily I have installed <a href=\"http:\/\/www.cygwin.com\/\">Cygwin<\/a>, so <a href=\"http:\/\/www.perl.org\/\">Perl<\/a> to the rescue. Found this <a href=\"http:\/\/stackoverflow.com\/questions\/80415\/perl-regex-match-and-removal\">Q&amp;A at StackOverflow<\/a>. <\/p>\n<p>Ended up with <\/p>\n<p><code class=\"codespan\">perl -ni.bak -e 'print unless m!^.*SystemOut.*!' SystemOut.log<\/code><\/p>\n<p>Original file > 80.000 lines, resultfile 195 lines&#8230;a bit easier to read&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While reviewing a SystemOut.log-file created by WebSphere I needed to remove all lines containing &#8220;SystemOut&#8221;. Luckily I have installed Cygwin, so Perl to the rescue. Found this Q&amp;A at StackOverflow. Ended up with perl -ni.bak -e &#8216;print unless m!^.*SystemOut.*!&#8217; SystemOut.log Original file > 80.000 lines, resultfile 195 lines&#8230;a bit easier to read&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-5498","post","type-post","status-publish","format-standard","hentry","category-work-geek"],"_links":{"self":[{"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=\/wp\/v2\/posts\/5498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5498"}],"version-history":[{"count":1,"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=\/wp\/v2\/posts\/5498\/revisions"}],"predecessor-version":[{"id":12123,"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=\/wp\/v2\/posts\/5498\/revisions\/12123"}],"wp:attachment":[{"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hellem.org\/wblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}