{"id":4533,"date":"2022-01-28T23:46:41","date_gmt":"2022-01-28T17:16:41","guid":{"rendered":"https:\/\/iatmm.com\/?p=4533"},"modified":"2022-01-29T00:16:31","modified_gmt":"2022-01-28T17:46:31","slug":"3-2-searching-and-extracting-data-from-files-1-redirecting-standard-error%ef%bf%bc","status":"publish","type":"post","link":"https:\/\/iat.edu.mm\/3-2-searching-and-extracting-data-from-files-1-redirecting-standard-error%ef%bf%bc\/","title":{"rendered":"3.2 Searching and Extracting Data from Files (1): Redirecting Standard Error\ufffc"},"content":{"rendered":"\n

Redirecting Standard Error<\/mark><\/strong><\/p>\n\n\n\n

Error Messages \u1010\u103d\u1031\u1000\u102d\u102f\u1015\u1032 \u101c\u103d\u103e\u1032\u101a\u1030\u1016\u102d\u102f\u1037\u1021\u1010\u103d\u1000\u103a 2> Operator<\/mark><\/em> \u101b\u1032\u1037\u1014\u1031\u102c\u1000\u103a\u1019\u103e\u102c Errors \u1010\u103d\u1031\u101b\u1031\u1038\u1019\u101a\u1037\u103a \u101e\u102d\u1019\u103a\u1038\u1011\u102c\u1038\u1019\u101a\u1037\u103a\u1016\u102d\u102f\u1004\u103a\u1000\u102d\u102f \u1011\u100a\u1037\u103a\u1015\u1031\u1038\u101b\u1019\u103e\u102c\u1015\u102b\u104b \u1016\u102d\u102f\u1004\u103a\u1019\u101b\u103e\u102d\u101c\u103b\u1004\u103a \u1021\u101e\u1005\u103a\u1016\u1014\u103a\u1010\u102e\u1038\u1015\u1031\u1038\u1019\u103e\u102c\u1016\u103c\u1005\u103a\u1015\u103c\u102e\u1038 \u101b\u103e\u102d\u1015\u103c\u102e\u1038\u101e\u102c\u1038\u1006\u102d\u102f\u1015\u102b\u1000 Overwrite \u101c\u102f\u1015\u103a\u1015\u103c\u102e\u1038 \u1011\u1015\u103a\u101b\u1031\u1038\u1015\u1031\u1038\u101e\u103d\u102c\u1038\u1019\u103e\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

Standard Error <\/mark><\/em>\u1010\u103d\u1031\u1000\u102d\u102f \u101c\u103d\u103e\u1032\u1015\u103c\u1031\u102c\u1004\u103a\u1038\u1016\u102d\u102f\u1037\u1021\u1010\u103d\u1000\u103a Channel 2 <\/mark><\/em>\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u102b\u1010\u101a\u103a\u104b \u101c\u103d\u103e\u1032\u1010\u1032\u1037\u1021\u1001\u102b Default \u1016\u103c\u1005\u103a\u1010\u1032\u1037 Standard Output Channel (Channel 1)<\/mark><\/em> \u1014\u103e\u1004\u1037\u103a \u1019\u1019\u103e\u102c\u1038\u101b\u1021\u1031\u102c\u1004\u103a Channel \u1014\u1036\u1015\u102b\u1010\u103a\u1000\u102d\u102f \u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u1016\u1031\u102c\u103a\u1015\u103c\u101b\u1019\u103e\u102c\u1015\u102b\u104b \u1025\u1015\u1019\u102c – \u1021\u1031\u102c\u1000\u103a\u1019\u103e\u102c\u1016\u1031\u102c\u103a\u1015\u103c\u1011\u102c\u1038\u101e\u101c\u102d\u102f find Command<\/mark><\/em> \u101f\u102c \u2018games\u2019 \u1006\u102d\u102f\u1010\u1032\u1037 \u1016\u102d\u102f\u1004\u103a (\u101e\u102d\u102f\u1037) Directory \u1000\u102d\u102f \u101b\u103e\u102c\u1010\u1032\u1037\u1021\u1001\u102b \u101b\u103e\u102c\u1010\u103d\u1031\u1037\u1010\u1032\u1037 Output \u1010\u103d\u1031\u1000\u102d\u102f Screen \u1019\u103e\u102c Standard Output \u1021\u1016\u103c\u1005\u103a\u1015\u103c\u1019\u103e\u102c\u1016\u103c\u1005\u103a\u1015\u103c\u102e\u1038 Error \u1010\u103d\u1031\u1000\u102d\u102f\u1010\u1031\u102c\u1037 \u2018text-error\u2019 \u1006\u102d\u102f\u1010\u1032\u1037 \u1016\u102d\u102f\u1004\u103a\u1011\u1032\u1019\u103e\u102c\u101b\u1031\u1038\u101e\u103d\u102c\u1038\u1019\u103e\u102c\u1019\u103b\u102d\u102f\u1038\u1015\u102b\u104b<\/p>\n\n\n\n

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Note: find Command \u1021\u1010\u103d\u1000\u103a \u1015\u102d\u102f\u1019\u102d\u102f\u101e\u102d\u101b\u103e\u102d\u1016\u102d\u102f\u1037 Man Page \u1001\u1031\u102b\u103a\u1000\u103c\u100a\u1037\u103a\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u1010\u101a\u103a\u104b<\/code><\/p>\n\n\n\n

\u1025\u1015\u1019\u102c – \u1021\u1031\u102c\u1000\u103a\u1015\u102b sort Command<\/mark><\/em> \u1019\u103e\u102c Errors \u1019\u101b\u103e\u102d\u1019\u103e\u102c\u1019\u102d\u102f\u1037 \u2018text-error\u2019 \u1016\u102d\u102f\u1004\u103a\u1011\u1032\u1000\u102d\u102f \u1018\u102c\u1019\u103e\u101e\u103d\u102c\u1038\u101b\u1031\u1038\u1019\u103e\u102c \u1019\u101f\u102f\u1010\u103a\u1015\u102b\u1018\u1030\u1038\u104b<\/p>\n\n\n\n

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Standard Output \u1019\u103e\u102c\u101c\u102d\u102f\u1015\u1032 Standard error \u1010\u103d\u1031\u1000\u102d\u102f\u101c\u100a\u103a\u1038 2>> Operator<\/mark><\/em> \u101e\u102f\u1036\u1038\u1015\u103c\u102e\u1038 \u1011\u1015\u103a\u1011\u100a\u1037\u103a\u101e\u103d\u102c\u1038\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u1010\u101a\u103a\u104b Error \u1021\u101e\u1005\u103a\u1010\u103d\u1031\u1000\u102d\u102f \u1016\u102d\u102f\u1004\u103a\u101b\u1032\u1037 \u1021\u1006\u102f\u1036\u1038\u1019\u103e\u102c \u1011\u1015\u103a\u1016\u103c\u100a\u1037\u103a\u101e\u103d\u102c\u1038\u1019\u103e\u102c\u1019\u103b\u102d\u102f\u1038\u1015\u102b\u104b \u1016\u102d\u102f\u1004\u103a\u1019\u101b\u103e\u102d\u1001\u1032\u1037\u101c\u103b\u1004\u103a \u1021\u101e\u1005\u103a\u1016\u1014\u103a\u1010\u102e\u1038\u1015\u1031\u1038\u1019\u103e\u102c\u1015\u102b\u104b \u1015\u1011\u1019\u1025\u1015\u1019\u102c\u1000 \u1016\u102d\u102f\u1004\u103a\u1011\u1032\u101e\u102d\u102f\u1037 Information \u1021\u101e\u1005\u103a\u1010\u103d\u1031 \u1011\u1015\u103a\u1016\u103c\u100a\u1037\u103a\u1010\u102c\u1016\u103c\u1005\u103a\u1015\u103c\u102e\u1038 \u1012\u102f\u1010\u102d\u101a\u1025\u1015\u1019\u102c\u1000\u1010\u1031\u102c\u1037 \u1014\u102c\u1019\u100a\u103a\u1010\u1030\u1016\u103c\u1004\u1037\u103a \u101b\u103e\u102d\u1015\u103c\u102e\u1038\u101e\u102c\u1038\u1016\u102d\u102f\u1004\u103a\u1019\u1010\u103d\u1031\u1037\u1010\u1032\u1037\u1021\u1001\u102b \u1016\u102d\u102f\u1004\u103a\u1021\u101e\u1005\u103a\u1016\u1014\u103a\u1010\u102e\u1038\u101e\u103d\u102c\u1038\u1010\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

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\"\"<\/figure>\n\n\n\n

\u1021\u1001\u102f\u101c\u102d\u102f \u101c\u103d\u103e\u1032\u101c\u102d\u102f\u1000\u103a\u1010\u1032\u1037\u1021\u1001\u102b Error Messages \u1010\u103d\u1031\u1000\u102d\u102f\u1015\u1032 \u1016\u102d\u102f\u1004\u103a\u1011\u1032\u101e\u102d\u102f\u1037 \u101c\u103d\u103e\u1032\u1015\u103c\u1031\u102c\u1004\u103a\u1038\u1019\u103e\u102c\u1016\u103c\u1005\u103a\u1015\u103c\u102e\u1038 \u1015\u102f\u1036\u1019\u103e\u1014\u103a Output \u1010\u103d\u1031\u1000\u102d\u102f\u1010\u1031\u102c\u1037 Screen \u1019\u103e\u102c \u1015\u103c\u1010\u102c\u104a (\u101e\u102d\u102f\u1037) Standard Output (\u101e\u102d\u102f\u1037) stdout \u1021\u1016\u103c\u1005\u103a \u1015\u103c\u1019\u103e\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

Input \u1010\u103d\u1031\u1000\u102d\u102f \u101c\u1000\u103a\u1001\u1036\u1015\u1031\u1019\u101a\u1037\u103a Process \u1018\u102c\u1019\u103e\u1019\u101c\u102f\u1015\u103a\u1010\u1032\u1037 Output \u1015\u103c\u1014\u103a\u1019\u1011\u102f\u1010\u103a\u1015\u1031\u1038\u1019\u101a\u1037\u103a \u1014\u100a\u103a\u1038\u1015\u100a\u102c\u1021\u101b \u1021\u1011\u1030\u1038\u1015\u103c\u102f\u101c\u102f\u1015\u103a\u1011\u102c\u1038\u1010\u1032\u1037 Bit Bucket<\/mark><\/em> \u101c\u102d\u102f\u1037 \u1001\u1031\u102b\u103a\u1000\u103c\u1010\u1032\u1037 \u1016\u102d\u102f\u1004\u103a\u101c\u1031\u1038 (\/dev\/null<\/mark><\/em>) \u101b\u103e\u102d\u1015\u102b\u1010\u101a\u103a\u104b \u1021\u1031\u102c\u1000\u103a\u1015\u102b \u1025\u1015\u1019\u102c\u1019\u103e\u102c \u1016\u1031\u102c\u103a\u1015\u103c\u1011\u102c\u1038\u101e\u101c\u102d\u102f \u101e\u102d\u1019\u103a\u1038\u1011\u102c\u1038\u1016\u102d\u102f\u1037\u1019\u101c\u102d\u102f\u1021\u1015\u103a\u1010\u1032\u1037 Information \u1010\u103d\u1031\u104a \u1015\u103c\u1016\u102d\u102f\u1037 \u1019\u101c\u102d\u102f\u104a \u1021\u101b\u1031\u1038\u1000\u103c\u102e\u1038\u1010\u1032\u1037 \u1016\u102d\u102f\u1004\u103a\u1010\u1016\u102d\u102f\u1004\u103a\u1011\u1032\u101e\u102d\u102f\u1037 \u101c\u103d\u103e\u1032\u1016\u102d\u102f\u1037 \u1019\u101c\u102d\u102f\u1010\u1032\u1037 Information \u1010\u103d\u1031\u1000\u102d\u102f \u1021\u1001\u102f\u101c\u102d\u102f\u1015\u1032 \u101c\u103d\u103e\u1032\u1014\u102d\u102f\u1004\u103a\u1010\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

Redirecting Standard Error Error Messages \u1010\u103d\u1031\u1000\u102d\u102f\u1015\u1032 \u101c\u103d\u103e\u1032\u101a\u1030\u1016\u102d\u102f\u1037\u1021\u1010\u103d\u1000\u103a 2> Operator \u101b\u1032\u1037\u1014\u1031\u102c\u1000\u103a\u1019\u103e\u102c Errors \u1010\u103d\u1031\u101b\u1031\u1038\u1019\u101a\u1037\u103a \u101e\u102d\u1019\u103a\u1038\u1011\u102c\u1038\u1019\u101a\u1037\u103a\u1016\u102d\u102f\u1004\u103a\u1000\u102d\u102f \u1011\u100a\u1037\u103a\u1015\u1031\u1038\u101b\u1019\u103e\u102c\u1015\u102b\u104b \u1016\u102d\u102f\u1004\u103a\u1019\u101b\u103e\u102d\u101c\u103b\u1004\u103a \u1021\u101e\u1005\u103a\u1016\u1014\u103a\u1010\u102e\u1038\u1015\u1031\u1038\u1019\u103e\u102c\u1016\u103c\u1005\u103a\u1015\u103c\u102e\u1038 \u101b\u103e\u102d\u1015\u103c\u102e\u1038\u101e\u102c\u1038\u1006\u102d\u102f\u1015\u102b\u1000 Overwrite \u101c\u102f\u1015\u103a\u1015\u103c\u102e\u1038 \u1011\u1015\u103a\u101b\u1031\u1038\u1015\u1031\u1038\u101e\u103d\u102c\u1038\u1019\u103e\u102c\u1015\u102b\u104b […]<\/p>\n","protected":false},"author":4,"featured_media":4534,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64,18,65],"tags":[],"class_list":["post-4533","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-iat-courses","category-knowledge-sharing","category-linux"],"_links":{"self":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts\/4533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/comments?post=4533"}],"version-history":[{"count":3,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts\/4533\/revisions"}],"predecessor-version":[{"id":4545,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts\/4533\/revisions\/4545"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/media\/4534"}],"wp:attachment":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/media?parent=4533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/categories?post=4533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/tags?post=4533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}