{"id":672,"date":"2022-04-25T08:52:40","date_gmt":"2022-04-25T00:52:40","guid":{"rendered":"https:\/\/ayay99.cn\/wd\/?p=672"},"modified":"2022-04-26T18:46:08","modified_gmt":"2022-04-26T10:46:08","slug":"%e8%a1%8c%e5%88%97%e8%bd%ac%e6%8d%a2%e5%ae%9e%e7%8e%b0%e6%96%b9%e5%bc%8f%ef%bc%88shell%ef%bc%89","status":"publish","type":"post","link":"\/wd\/?p=672","title":{"rendered":"\u884c\u5217\u8f6c\u6362\u5b9e\u73b0\u65b9\u5f0f\uff08SHELL\uff09"},"content":{"rendered":"\n

1.AWK \u547d\u4ee4\u7684\u5b9e\u73b0\u65b9\u5f0f<\/p>\n\n\n\n

\nseq 10 | awk 'ORS=NR%2?\"\\t\\t\":\"\\n\"'\necho \"abc\" | awk '{ OFS=\".\" } { NF=NF; print NF,$0}'\n<\/code>\n<\/pre>\n\n\n\n
2.xargs -n\u53c2\u6570\u4e5f\u53ef\u5b9e\u73b0 \uff08\u4f46\u90e8\u5206\u6761\u4ef6\u4e0b\u4f1a\u6709\u9650\u5236\uff09<\/p>\n\n\n\n
\nseq  10 |xargs -n 2 \n<\/code>\n<\/pre>\n\n\n\n
\u6269\u5c55\uff1a<\/p>\n\n\n\n
\u4e00\uff1aawk\u4e2d\u8c03\u7528shell\u547d\u4ee4\uff1a<\/p>\n\n\n\n
awk\u4e2d\u7684\u7ba1\u9053\u6982\u5ff5\u548cshell\u7684\u7ba1\u9053\u7c7b\u4f3c\uff0c\u90fd\u662f\u4f7f\u7528”|”\u7b26\u53f7\u3002\u5982\u679c\u5728awk\u7a0b\u5e8f\u4e2d\u6253\u5f00\u4e86\u7ba1\u9053\uff0c\u5fc5\u987b\u5148\u5173\u95ed\u8be5\u7ba1\u9053\u624d\u80fd\u6253\u5f00\u53e6\u4e00\u4e2a\u7ba1\u9053\u3002\u4e5f\u5c31\u662f\u8bf4\u4e00\u6b21\u53ea\u80fd\u6253\u5f00\u4e00\u4e2a\u7ba1\u9053\u3002shell\u547d\u4ee4\u5fc5\u987b\u88ab\u53cc\u5f15\u53f7\u5f15\u7528\u8d77\u6765\u3002\u201c\u5982\u679c\u6253\u7b97\u518d\u6b21\u5728awk\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u67d0\u4e2a\u6587\u4ef6\u6216\u7ba1\u9053\u8fdb\u884c\u8bfb\u5199\uff0c\u5219\u53ef\u80fd\u8981\u5148\u5173\u95ed\u7a0b\u5e8f\uff0c\u56e0\u4e3a\u5176\u4e2d\u7684\u7ba1\u9053\u4f1a\u4fdd\u6301\u6253\u5f00\u72b6\u6001\u76f4\u81f3\u811a\u672c\u8fd0\u884c\u7ed3\u675f\u3002\u6ce8\u610f\uff0c\u7ba1\u9053\u4e00\u65e6\u88ab\u6253\u5f00\uff0c\u5c31\u4f1a\u4fdd\u6301\u6253\u5f00\u72b6\u6001\u76f4\u81f3awk\u9000\u51fa\u3002\u56e0\u6b64END\u5757\u4e2d\u7684\u8bed\u53e5\u4e5f\u4f1a\u6536\u5230\u7ba1\u9053\u7684\u5f71\u54cd\u3002(\u53ef\u4ee5\u5728END\u7684\u7b2c\u4e00\u884c\u5173\u95ed\u7ba1\u9053)\u201d<\/p>\n\n\n\n
awk\u4e2d\u4f7f\u7528\u7ba1\u9053\u6709\u4e24\u79cd\u8bed\u6cd5\uff0c\u5206\u522b\u662f\uff1a<\/p>\n\n\n\n
\nawk output | shell input\nshell output | awk input\n<\/code>\n<\/pre>\n\n\n\n
\u5bf9\u4e8eawk output | shell input\u6765\u8bf4\uff0cshell\u63a5\u6536awk\u7684\u8f93\u51fa\uff0c\u5e76\u8fdb\u884c\u5904\u7406\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cawk\u7684output\u662f\u5148\u7f13\u5b58\u5728pipe\u4e2d\uff0c\u7b49\u8f93\u51fa\u5b8c\u6bd5\u540e\u518d\u8c03\u7528shell\u547d\u4ee4 \u5904\u7406\uff0cshell\u547d\u4ee4\u53ea\u5904\u7406\u4e00\u6b21\uff0c\u800c\u4e14\u5904\u7406\u7684\u65f6\u673a\u662f\u201cawk\u7a0b\u5e8f\u7ed3\u675f\u65f6\uff0c\u6216\u8005\u7ba1\u9053\u5173\u95ed\u65f6(\u9700\u8981\u663e\u5f0f\u7684\u5173\u95ed\u7ba1\u9053)\u201d<\/p>\n\n\n\n
\n$awk '\/west\/{count++} {printf \"%s %s\\t\\t%-15s\\n\", $3,$4,$1 | \"sort +1\"} END{close \"sort +1\"; printf \"The number of sales pers in the western\"; printf \"region is \" count \".\" }' datafile \n<\/code>\n<\/pre>\n\n\n\n
(\u89e3\u91ca\uff1a\/west\/{count++}\u8868\u793a\u4e0e\u201cwes\u201dt\u8fdb\u884c\u5339\u914d\uff0c\u82e5\u5339\u914d\uff0c\u5219count\u81ea\u589e)<\/p>\n\n\n\n
printf\u51fd\u6570\u7528\u4e8e\u5c06\u8f93\u51fa\u683c\u5f0f\u5316\u5e76\u53d1\u9001\u7ed9\u7ba1\u9053\u3002\u6240\u6709\u8f93\u51fa\u96c6\u9f50\u540e\uff0c\u88ab\u4e00\u540c\u53d1\u9001\u7ed9sort\u547d\u4ee4\u3002\u5fc5\u987b\u7528\u4e0e\u6253\u5f00\u65f6\u5b8c\u5168\u76f8\u540c\u7684\u547d\u4ee4\u6765\u5173\u95ed\u7ba1\u9053(sort +1)\uff0c\u5426\u5219END\u5757\u4e2d\u7684\u8bed\u53e5\u5c06\u4e0e\u524d\u9762\u7684\u8f93\u51fa\u4e00\u8d77\u88ab\u6392\u5e8f\u3002\u6b64\u5904\u7684sort\u547d\u4ee4\u53ea\u6267\u884c\u4e00\u6b21\u3002<\/p>\n\n\n\n
\u5728shell output | awk input\u4e2dawk\u7684input\u53ea\u80fd\u662fgetline\u51fd\u6570\u3002shell\u6267\u884c\u7684\u7ed3\u679c\u7f13\u5b58\u4e8epipe\u4e2d\uff0c\u518d\u4f20\u9001\u7ed9awk\u5904\u7406\uff0c\u5982\u679c\u6709\u591a\u884c\u6570\u636e\uff0cawk\u7684getline\u547d\u4ee4\u53ef\u80fd\u8c03\u7528\u591a\u6b21\u3002<\/p>\n\n\n\n
\n$awk 'BEGIN{ while((\"ls\" | getline d) > 0) print d}' f\n<\/code>\n<\/pre>\n\n\n\n
\u4e8c\uff1aawk\u7ed3\u5408match\u4f7f\u7528\uff0c\u63d0\u53d6\u5339\u914d\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n
\u6587\u4ef6\u5185\u5bb9\uff1a<\/p>\n\n\n\n
hostname<\/p>\n\n\n\n
0.0.0.0<\/p>\n\n\n\n
\u8981\u6c42\u63d0\u53d60.0.0.0<\/p>\n\n\n\n
\u547d\u4ee4\uff1a<\/p>\n\n\n\n
\ncat filename | grep -A 1 \"hostname\" |awk 'match($0, \"(.*)\", a) {print a[1]}'\n<\/code>\n<\/pre>\n\n\n\n
\u5176\u4e2d grep -A n,\u8868\u793a\u591a\u5f80\u4e0b\u8f93\u51fan\u884c<\/p>\n","protected":false},"excerpt":{"rendered":"
1.AWK \u547d\u4ee4\u7684\u5b9e\u73b0\u65b9\u5f0f seq 10 |<\/p>\n
Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-672","post","type-post","status-publish","format-standard","hentry","category-6"],"_links":{"self":[{"href":"\/wd\/index.php?rest_route=\/wp\/v2\/posts\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"\/wd\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"\/wd\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/wd\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/wd\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=672"}],"version-history":[{"count":20,"href":"\/wd\/index.php?rest_route=\/wp\/v2\/posts\/672\/revisions"}],"predecessor-version":[{"id":741,"href":"\/wd\/index.php?rest_route=\/wp\/v2\/posts\/672\/revisions\/741"}],"wp:attachment":[{"href":"\/wd\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/wd\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=672"},{"taxonomy":"post_tag","embeddable":true,"href":"\/wd\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}