{"id":1073,"date":"2010-11-18T17:50:31","date_gmt":"2010-11-18T09:50:31","guid":{"rendered":"http:\/\/blog.pighead.cc\/whsyu\/?p=1073"},"modified":"2011-02-13T12:49:57","modified_gmt":"2011-02-13T04:49:57","slug":"perl-script-get-output-by-open","status":"publish","type":"post","link":"https:\/\/blog.pighead.cc\/whsyu\/2010\/11\/18\/perl-script-get-output-by-open\/","title":{"rendered":"\u5728 perl script \u5e95\u809a\u7528 open \u62ff\u5230\u7cfb\u7d71\u57f7\u884c\u7684\u7d50\u679c"},"content":{"rendered":"<p class=\"bb-post-separator\"><strong>[\u5ba2\u5bb6\u8a71, hak-Hant-TW]  <\/strong><\/p><p>Perl script \u53ef\u4ee5\u7528 system(); \u4f86\u57f7\u884c\u5916\u90e8\u7684\u7a0b\u5f0f\uff0c\u5077\u61f6\u6642\u7576\u597d\u7528\u3002 \u6bcb\u904e system(); \u6709\u4e00\u96bb\u9ebb\u7169\uff1a \u57f7\u884c\u7d50\u679c\u6703\u76f4\u63a5\u4e1f\u5230 stdout\uff0cscript \u81ea\u5bb6\u62ff\u4e0d\u5230\u7d50\u679c\uff0c\u662f\u8b1b script \u6703\u62ff\u5230\u57f7\u884c\u7d50\u679c\u505a\u4e0b\u4e00\u6b65\u52d5\u4f5c\uff0c\u5c31\u8981\u7528\u5176\u4ed6\u65b9\u6cd5\u4e86\uff0c\u7528 open \u52a0 pipe \u5c31\u53ef\u4ee5\u505a\u5230\uff0c\u50cf\u8981\u7528 find \u5c0b\u5230\u5168\u90e8\u7684 .txt \u6a94\uff0c\u4e00\u96bb\u4e00\u96bb\u6488\u62d2\u6253\u958b\u4f86\uff0c\u5c31\u53ef\u4ee5\u6309\u4ed4\u5beb\uff1a<\/p>\n<pre lang=\"perl\" escaped=\"true\">open FILES, \"\/usr\/bin\/find *.txt |\"\r\nwhile (&lt;FILES&gt;) {\r\n  open(FILE, $_);\r\n}<\/pre>\n<p>\u7b2c\u4e00\u96bb open \u90a3\u908a\u6703\u5b58\u4e0b\u7d50\u679c\u653e\u5230 FILES\uff0c\u8a18\u5f97\u76e1\u5f8c\u80cc\u8981\u52a0\u4e00\u96bb &#8216;|&#8217; (pipe) \u4f86\u5c0e\u5411\uff0c\u7528 while \u4e00\u884c\u4e00\u884c\u7684\u6488\u4ed6\u5370\u51fa\u4f86\u3002\u7b2c\u4e8c\u96bb open \u5c31\u662f\u6b63\u7d93\u4f86\u6253\u958b\u6a94\u6848\u4e86\uff0c\u6309\u4ed4\u5beb\u6bcb\u6703\u592a\u9ebb\u7169\uff0c\u6bcb\u5920\u8de8\u5e73\u53f0\u7684\u80fd\u529b\u8f03\u5dee\u5c31\u662f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[\u5ba2\u5bb6\u8a71, hak-Hant-TW] Perl script \u53ef\u4ee5\u7528 system(); \u4f86\u57f7\u884c\u5916\u90e8\u7684\u7a0b\u5f0f\uff0c\u5077\u61f6\u6642\u7576\u597d\u7528\u3002 \u6bcb\u904e system(); \u6709\u4e00\u96bb\u9ebb\u7169\uff1a \u57f7\u884c\u7d50\u679c\u6703\u76f4\u63a5\u4e1f\u5230 stdout\uff0cscript \u81ea\u5bb6\u62ff\u4e0d\u5230\u7d50\u679c\uff0c\u662f\u8b1b script \u6703\u62ff\u5230\u57f7\u884c\u7d50\u679c\u505a\u4e0b\u4e00\u6b65\u52d5\u4f5c\uff0c\u5c31\u8981\u7528\u5176\u4ed6\u65b9\u6cd5\u4e86\uff0c\u7528 open \u52a0 pipe \u5c31\u53ef\u4ee5\u505a\u5230\uff0c\u50cf\u8981\u7528 find \u5c0b\u5230\u5168\u90e8\u7684 .txt \u6a94\uff0c\u4e00\u96bb\u4e00\u96bb\u6488\u62d2\u6253\u958b\u4f86\uff0c\u5c31\u53ef\u4ee5\u6309\u4ed4\u5beb\uff1a open FILES, &#8220;\/usr\/bin\/find *.txt |&#8221; while (&lt;FILES&gt;) { open(FILE, $_); } \u7b2c\u4e00\u96bb open \u90a3\u908a\u6703\u5b58\u4e0b\u7d50\u679c\u653e\u5230 FILES\uff0c\u8a18\u5f97\u76e1\u5f8c\u80cc\u8981\u52a0\u4e00\u96bb &#8216;|&#8217; (pipe)&hellip; <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[200],"tags":[177],"class_list":["post-1073","post","type-post","status-publish","format-standard","hentry","category-development","tag-perl"],"_links":{"self":[{"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/posts\/1073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/comments?post=1073"}],"version-history":[{"count":6,"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/posts\/1073\/revisions"}],"predecessor-version":[{"id":1078,"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/posts\/1073\/revisions\/1078"}],"wp:attachment":[{"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/media?parent=1073"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/categories?post=1073"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.pighead.cc\/whsyu\/wp-json\/wp\/v2\/tags?post=1073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}