{"id":2933,"date":"2023-05-12T17:10:36","date_gmt":"2023-05-12T09:10:36","guid":{"rendered":"https:\/\/hsin-life.com\/?p=2933"},"modified":"2023-05-12T17:10:39","modified_gmt":"2023-05-12T09:10:39","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3linux%e4%b8%ad%e7%9a%84cat%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/hsin-life.com\/archives\/2933","title":{"rendered":"\u6df1\u5165\u7406\u89e3Linux\u4e2d\u7684cat\u547d\u4ee4"},"content":{"rendered":"\n

Linux\u4f5c\u696d\u7cfb\u7d71\u4ee5\u5176\u5f37\u5927\u7684\u547d\u4ee4\u884c\u5de5\u5177\u800c\u805e\u540d\uff0c\u5176\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u5de5\u5177\u5c31\u662fcat\u547d\u4ee4\u3002cat\u7684\u82f1\u6587\u5168\u62fc\u662f\u201cconcatenate\u201d\uff0c\u610f\u70ba\u9023\u63a5\uff0c\u6b64\u547d\u4ee4\u4e3b\u8981\u7528\u65bc\u9023\u63a5\u6587\u4ef6\u4e26\u6253\u5370\u5230\u6a19\u6e96\u8f38\u51fa\u8a2d\u5099\u4e0a\u3002\u5728\u9019\u88e1\uff0c\u6211\u5011\u5c07\u8a73\u7d30\u63a2\u8a0ecat\u547d\u4ee4\u53ca\u5176\u7528\u6cd5\u3002<\/p>\n\n\n\n

cat\u547d\u4ee4\u5177\u6709\u591a\u7a2e\u9078\u9805\uff0c\u5176\u8a9e\u6cd5\u683c\u5f0f\u70ba “cat [-AbeEnstTuv] [–help] [–version] fileName”\u3002\u8b93\u6211\u5011\u4f86\u770b\u770b\u9019\u4e9b\u9078\u9805\u7684\u5177\u9ad4\u542b\u7fa9\uff1a<\/p>\n\n\n\n

    \n
  1. -n \u6216 –number\uff1a\u75311\u958b\u59cb\u5c0d\u6240\u6709\u8f38\u51fa\u7684\u884c\u6578\u7de8\u865f\u3002<\/li>\n\n\n\n
  2. -b \u6216 –number-nonblank\uff1a\u8207-n\u76f8\u4f3c\uff0c\u53ea\u4e0d\u904e\u5c0d\u65bc\u7a7a\u767d\u884c\u4e0d\u7de8\u865f\u3002<\/li>\n\n\n\n
  3. -s \u6216 –squeeze-blank\uff1a\u7576\u9047\u5230\u6709\u9023\u7e8c\u5169\u884c\u4ee5\u4e0a\u7684\u7a7a\u767d\u884c\uff0c\u5c31\u4ee3\u63db\u70ba\u4e00\u884c\u7684\u7a7a\u767d\u884c\u3002<\/li>\n\n\n\n
  4. -v \u6216 –show-nonprinting\uff1a\u4f7f\u7528 ^ \u548c M- \u7b26\u865f\uff0c\u9664\u4e86 LFD \u548c TAB \u4e4b\u5916\u3002<\/li>\n\n\n\n
  5. -E \u6216 –show-ends\uff1a\u5728\u6bcf\u884c\u7d50\u675f\u8655\u986f\u793a$\u3002<\/li>\n\n\n\n
  6. -T \u6216 –show-tabs\uff1a\u5c07TAB\u5b57\u7b26\u986f\u793a\u70ba^I\u3002<\/li>\n\n\n\n
  7. -A, –show-all\uff1a\u7b49\u50f9\u65bc-vET\u3002<\/li>\n\n\n\n
  8. -e\uff1a\u7b49\u50f9\u65bc”-vE”\u9078\u9805\uff1b<\/li>\n\n\n\n
  9. -t\uff1a\u7b49\u50f9\u65bc”-vT”\u9078\u9805\u3002<\/li>\n<\/ol>\n\n\n\n

    \u63a5\u4e0b\u4f86\uff0c\u8b93\u6211\u5011\u770b\u5e7e\u500b\u5be6\u969b\u7684\u4f8b\u5b50\u4f86\u7406\u89e3\u5982\u4f55\u4f7f\u7528cat\u547d\u4ee4\u3002<\/p>\n\n\n\n

    \u5982\u679c\u4f60\u5e0c\u671b\u628atextfile1\u7684\u6587\u6a94\u5167\u5bb9\u52a0\u4e0a\u884c\u865f\u5f8c\u8f38\u5165textfile2\u9019\u500b\u6587\u6a94\u88e1\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\uff1a cat -n textfile1 > textfile2<\/p>\n\n\n\n

    \u5982\u679c\u4f60\u5e0c\u671b\u628atextfile1\u548ctextfile2\u7684\u6587\u6a94\u5167\u5bb9\u52a0\u4e0a\u884c\u865f\uff08\u7a7a\u767d\u884c\u4e0d\u52a0\uff09\u4e4b\u5f8c\u5c07\u5167\u5bb9\u9644\u52a0\u5230textfile3\u6587\u6a94\u88e1\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\uff1a cat -b textfile1 textfile2 >> textfile3<\/p>\n\n\n\n

    \u6709\u6642\u6211\u5011\u53ef\u80fd\u9700\u8981\u6e05\u7a7a\u67d0\u500b\u6587\u4ef6\uff0c\u4f8b\u5982\u6e05\u7a7a \/etc\/test.txt \u6587\u6a94\u5167\u5bb9\uff1a cat \/dev\/null > \/etc\/test.txt<\/p>\n\n\n\n

    \u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0ccat\u547d\u4ee4\u4e5f\u53ef\u4ee5\u7528\u4f86\u88fd\u4f5c\u93e1\u50cf\u6587\u4ef6\u3002\u4f8b\u5982\uff0c\u8981\u88fd\u4f5c\u8edf\u76e4\u7684\u93e1\u50cf\u6587\u4ef6\uff0c\u5c07\u8edf\u76e4\u653e\u597d\u5f8c\u8f38\u5165\uff1a cat \/dev\/fd0 > OUTFILE<\/p>\n\n\n\n

    \u76f8\u53cd\u7684\uff0c\u5982\u679c\u60f3\u628a\u93e1\u50cf\u6587\u4ef6\u5beb\u56de\u5230\u8edf\u76e4\uff0c\u8f38\u5165\uff1a cat IMG_FILE > \/dev\/fd0<\/p>\n\n\n\n

    \u9019\u88e1\u7684OUTFILE\u6307\u7684\u662f\u8f38\u51fa\u7684\u93e1\u50cf\u6587\u4ef6\u540d\uff0cIMG_FILE\u5247\u662f\u93e1\u50cf\u6587\u4ef6\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u5f9e\u93e1\u50cf\u6587\u4ef6\u5beb\u56dedevice\u6642\uff0cdevice\u7684\u5bb9\u91cf\u9700\u8981\u8207\u93e1\u50cf\u6587\u4ef6\u76f8\u7576\u3002\u9019\u7a2e\u7528\u6cd5\u901a\u5e38\u7528\u65bc\u88fd\u4f5c\u958b\u6a5f\u78c1\u7247\u3002<\/p>\n\n\n\n

    \u901a\u904e\u4ee5\u4e0a\u7684\u8aaa\u660e\uff0c\u6211\u5011\u5c0dLinux\u7cfb\u7d71\u4e2d\u7684cat\u547d\u4ee4\u6709\u4e86\u66f4\u6df1\u5165\u7684\u4e86\u89e3\u3002cat\u547d\u4ee4\u4e0d\u50c5\u53ef\u4ee5\u67e5\u770b\u548c\u9023\u63a5\u6587\u4ef6\uff0c\u9084\u6709\u5176\u4ed6\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5982\u7de8\u865f\u884c\u6578\u3001\u58d3\u7e2e\u7a7a\u767d\u884c\u3001\u986f\u793a\u975e\u6253\u5370\u5b57\u7b26\u7b49\u3002\u900f\u904e\u9069\u7576\u7684\u9078\u9805\u548c\u53c3\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u9748\u6d3b\u5730\u4f7f\u7528cat\u547d\u4ee4\uff0c\u4f7f\u5176\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\u767c\u63ee\u66f4\u5927\u7684\u6548\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39Linux\u7cfb\u7d71\u4e2d\u7684cat\u547d\u4ee4\u3002\u6211\u5011\u5c07\u6df1\u5165\u63a2\u8a0e\u5176\u53c3\u6578\u3001\u8a9e\u6cd5\u683c\u5f0f\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u5be6\u969b\u60c5\u6cc1\u4e2d\u4f7f\u7528\u5b83\u3002<\/p>\n","protected":false},"author":1,"featured_media":2934,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[752],"tags":[935,694,937,938,936],"aioseo_notices":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/i0.wp.com\/hsin-life.com\/wp-content\/uploads\/2023\/05\/pexels-photo-2312369-2.jpeg?fit=1880%2C1253&ssl=1","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/2933"}],"collection":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/comments?post=2933"}],"version-history":[{"count":2,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/2933\/revisions"}],"predecessor-version":[{"id":2936,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/2933\/revisions\/2936"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media\/2934"}],"wp:attachment":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media?parent=2933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/categories?post=2933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/tags?post=2933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}