{"id":1013,"date":"2020-04-05T10:45:21","date_gmt":"2020-04-05T02:45:21","guid":{"rendered":"http:\/\/blog.ywdevops.cn\/?p=1013"},"modified":"2022-06-24T10:41:13","modified_gmt":"2022-06-24T02:41:13","slug":"zhengze","status":"publish","type":"post","link":"https:\/\/blog.ywdevops.cn\/index.php\/2020\/04\/05\/zhengze\/","title":{"rendered":"shell\u6b63\u5219\u8868\u8fbe\u5f0f"},"content":{"rendered":"\n

\u6b63\u5219\u8868\u8fbe\u5f0f\u5206\u4e3a\u4e24\u7c7b\uff0c\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u4ee5\u53ca\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u5176\u4e3b\u8981\u4f5c\u7528\u662f\u6587\u672c\u641c\u7d22\u4ee5\u53ca\u5b57\u7b26\u4e32\u5904\u7406\u3002<\/p>\n\n\n\n

\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u539f\u5b57\u7b26\u53ca\u5176\u542b\u4e49<\/strong><\/p>\n\n\n\n

\u7b26\u53f7<\/td>\u542b\u4e49<\/td><\/tr>
*<\/td>\u5339\u914d0\u4e2a\u6216\u591a\u4e2a*\u524d\u9762\u7684\u666e\u901a\u5b57\u7b26<\/td><\/tr>
.<\/td>\u5339\u914d\u4efb\u610f\u5b57\u7b26<\/td><\/tr>
^<\/td>\u5339\u914d\u884c\u9996<\/td><\/tr>
$<\/td>\u5339\u914d\u884c\u5c3e<\/td><\/tr>
[]<\/td>\u5339\u914d\u5b57\u7b26\u96c6\u5408<\/td><\/tr>
\\<\/td>\u8f6c\u4e49\u5b57\u7b26\uff0c\u5c4f\u853d\u5143\u5b57\u7b26\u7684\u7279\u6b8a\u610f\u4e49<\/td><\/tr>
\\{n\\}<\/td>\u5339\u914d\u524d\u9762\u5b57\u7b26\u51fa\u73b0n\u6b21<\/td><\/tr>
\\{n,\\}<\/td>\u5339\u914d\u524d\u9762\u5b57\u7b26\u81f3\u5c11\u51fa\u73b0n\u6b21<\/td><\/tr>
\\{n,m\\} <\/td>\u5339\u914d\u524d\u9762\u5b57\u7b26\u51fa\u73b0n~m\u6b21<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u4e3e\u4f8b\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n

1.”*” : \u8868\u793a\u5339\u914d\u524d\u9762\u5b57\u7b26\u51fa\u73b00\u6b21\u6216\u8005\u591a\u6b21<\/p>\n\n\n\n

\u4f8b\u5982\uff1aabc*d\uff0c\u6b64\u65f6\u53ef\u4ee5\u5339\u914dabcd\u3001abccd\u3001abcccd\u3001abcccccd\u7b49<\/p>\n\n\n\n

2. “.” \uff1a\u53ef\u4ee5\u5339\u914d\u4efb\u610f\u5b57\u7b26<\/p>\n\n\n\n

\u4f8b\u5982\uff1a abc. \u53ef\u4ee5\u5339\u914dabcd\u3001abce\u3001abc1\u3001abc5\u7b49\uff0c\u4e5f\u53ef\u4ee5\u5339\u914d\u7a7a\u683c<\/p>\n\n\n\n

3. “^” \uff1a\u8868\u793a\u5339\u914d\u884c\u9996<\/p>\n\n\n\n

\u4f8b\u5982\uff1a^abc\uff0c\u8868\u793a\u5339\u914d\u4ee5abc\u4e3a\u5f00\u5934\u7684\u6240\u6709\u884c<\/p>\n\n\n\n

4. “$” \uff1a\u8868\u793a\u5339\u914d\u884c\u5c3e\uff0c\u4e0e$\u7528\u6cd5\u521a\u597d\u76f8\u53cd<\/p>\n\n\n\n

\u4f8b\u5982\uff1aabc$\uff0c\u8868\u793a\u5339\u914d\u4ee5abc\u7ed3\u5c3e\u7684\u6240\u6709\u884c\uff0c^$\u8868\u793a\u5339\u914d\u7a7a\u884c\uff0c^.$\u5339\u914d\u5305\u542b\u4e00\u4e2a\u5b57\u7b26\u7684\u884c<\/p>\n\n\n\n

5. “[]” \uff1a\u5339\u914d\u5b57\u7b26\u96c6\u5408\uff0c\u652f\u6301\u901a\u8fc7\u7a77\u4e3e\u65b9\u6cd5\u5217\u51fa\u6240\u6709\u5143\u7d20<\/p>\n\n\n\n

\u4f8b\u5982\uff1a[0123456789]\uff0c\u8868\u793a\u5339\u914d1\u52309\u4efb\u610f\u4e00\u4e2a\u6570\u5b57\uff0c\u4e5f\u53ef\u4ee5\u5199\u6210[0-9]\uff0c[A-Z]\u8868\u793a\u5339\u914d\u6240\u6709\u5927\u5199\u5b57\u6bcd\uff0c[a-z]\uff0c\u8868\u793a\u5339\u914d\u6240\u6709\u5c0f\u5199\u5b57\u6bcd\uff0c[^a-d]\uff0c\u8868\u793a\u5339\u914d\u9664\u4e86a-d\u4e4b\u5916\u7684\u6240\u6709\u5b57\u7b26\uff0c\u53d6\u53cd\u7684\u610f\u601d\uff0c[A-Za-z]\uff0c\u8868\u793a\u5339\u914d\u6240\u6709\u82f1\u6587\u5b57\u6bcd<\/p>\n\n\n\n

6. “\\” \uff1a\u8868\u793a\u8f6c\u4e49\u5b57\u7b26\uff0c\u53ef\u4ee5\u5c4f\u853d\u4e00\u4e2a\u5143\u5b57\u7b26\u7684\u542b\u4e49<\/p>\n\n\n\n

\u4f8b\u5982\uff1aabcd\\. \u6b64\u65f6.\u5c06\u4e0d\u4f1a\u5339\u914d\u4efb\u610f\u5b57\u7b26\uff0c\u5df2\u88ab\u8f6c\u4e49\uff0c\u8f93\u51fa\u7ed3\u679c\u5c06\u662fabcd.<\/p>\n\n\n\n

7. “\\{\\}”\uff1a\u7528\u6cd5\u4e0e*\u7c7b\u4f3c\uff0c\u4f46\u662f\u53ef\u4ee5\u6307\u5b9a\u5339\u914d\u7684\u6b21\u6570<\/p>\n\n\n\n

\u4f8b\u5982\uff1aabc\\{3\\}\uff0c\u8868\u793a\u5339\u914d\u5b57\u6bcdc\u51fa\u73b0\u7684\u6b21\u6570\u4e3a3\u6b21\uff0c\u5c06\u5339\u914dabccc\u3002abc\\{3,\\}\u8868\u793a\u53ef\u4ee5\u5339\u914d\u5b57\u6bcdc\u51fa\u73b0\u7684\u6b21\u6570\u81f3\u5c113\u6b21\uff0c\u53ef\u4ee5\u5339\u914dabccc\u3001abcccc\u3001abcccc\u3002 abc\\{3,5\\}\u8868\u793a\u5c06\u5339\u914dc\u51fa\u73b0\u7684\u6b21\u6570\u4e3a\u6700\u5c113\u6b21\uff0c\u6700\u591a5\u6b21<\/p>\n\n\n\n

\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f\u5143\u5b57\u7b26\u53ca\u5176\u542b\u4e49<\/strong><\/p>\n\n\n\n

\u7b26\u53f7<\/td>\u542b\u4e49<\/td><\/tr>
\uff1f<\/td>\u5339\u914d0\u4e2a\u62161\u4e2a\u524d\u9762\u7684\u5b57\u7b26<\/td><\/tr>
+<\/td>\u5339\u914d1\u4e2a\u6216\u591a\u4e2a\u524d\u9762\u7684\u5b57\u7b26<\/td><\/tr>
()<\/td>\u5305\u542b\u6b63\u5219\u8868\u8fbe\u5f0f\u4e0e”|”\u4e00\u8d77\u4f7f\u7528<\/td><\/tr>
|<\/td>\u6b63\u5219\u8868\u8fbe\u5f0f”\u6216”\u64cd\u4f5c\u7b26<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u4e3e\u4f8b\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n

1. “?” \uff1a\u5339\u914d?\u524d\u9762\u7684\u5b57\u7b260\u6b21\u6216\u80051\u6b21<\/p>\n\n\n\n

\u4f8b\u5982\uff1aabc?\uff0c\u8868\u793a\u5339\u914d\u5b57\u6bcdc\u51fa\u73b00\u4e2a\u62161\u4e2a\uff0c\u53ea\u80fd\u5339\u914d\u4e00\u4e2a\u5b57\u7b26\uff0c\u53ef\u4ee5\u5339\u914dab\u3001abc<\/p>\n\n\n\n

2. “+” : \u5339\u914d\u524d\u9762\u7684\u5b57\u7b261\u6b21\u6216\u8005\u591a\u6b21\uff0c\u81f3\u5c111\u6b21<\/p>\n\n\n\n

\u4f8b\u5982\uff1aab+c\uff0c\u53ef\u4ee5\u5339\u914dabc\u3001abbc\u3001abbbc\u3001abbbbbc<\/p>\n\n\n\n

3. “()\u548c|” \uff1a\u4e24\u4e2a\u7b26\u53f7\u901a\u5e38\u4e00\u8d77\u4f7f\u7528\uff0c\u8868\u793a\u4e00\u7ec4\u53ef\u9009\u5b57\u7b26\u7684\u96c6\u5408<\/p>\n\n\n\n

\u4f8b\u5982\uff1aabc(d|e|f)g\uff0c\u53ef\u4ee5\u5339\u914dabceg\u3001abcdg\u3001abcfg\u7b49<\/p>\n\n\n\n

\u7279\u6b8a\u5b57\u7b26\u7ec4<\/strong><\/p>\n\n\n\n

[[:alpha:]]<\/td>\u5339\u914d\u4efb\u610f\u5b57\u6bcd\u5b57\u7b26\uff0c\u4e0d\u7ba1\u662f\u5927\u5199\u8fd8\u662f\u5c0f\u5199<\/td><\/tr>
[[:alnum:]]<\/td>\u5339\u914d\u4efb\u610f\u5b57\u6bcd\u6570\u5b57\u5b57\u7b260~9\u3001A~Z\u6216a~z<\/td><\/tr>
[[:blank:]]<\/td>\u5339\u914d\u7a7a\u683c\u6216\u5236\u8868\u7b26<\/td><\/tr>
[[:digit:]]<\/td>\u5339\u914d0~9\u4e4b\u95f4\u7684\u6570\u5b57<\/td><\/tr>
[[:lower:]]<\/td>\u5339\u914d\u5c0f\u5199\u5b57\u6bcd\u5b57\u7b26a~z<\/td><\/tr>
[[:print:]]<\/td>\u5339\u914d\u4efb\u610f\u53ef\u6253\u5370\u5b57\u7b26<\/td><\/tr>
[[:punct:]]<\/td>\u5339\u914d\u6807\u70b9\u7b26\u53f7<\/td><\/tr>
[[:space:]]<\/td>\u5339\u914d\u4efb\u610f\u7a7a\u767d\u5b57\u7b26\uff1a\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001NL\u3001FF\u3001VT\u548cCR<\/td><\/tr>
[[:upper:]]<\/td>\u5339\u914d\u4efb\u610f\u5927\u5199\u5b57\u6bcd\u5b57\u7b26A~Z<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

\u6b63\u5219\u8868\u8fbe\u5f0f\u5206\u4e3a\u4e24\u7c7b\uff0c\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u4ee5\u53ca\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u5176\u4e3b\u8981\u4f5c\u7528\u662f\u6587\u672c\u641c\u7d22\u4ee5\u53ca\u5b57\u7b26\u4e32\u5904\u7406\u3002 \u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u539f\u5b57 […]<\/p>\n","protected":false},"author":3,"featured_media":1023,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,29],"tags":[],"class_list":["post-1013","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-shell","category-yunwei"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/1013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1013"}],"version-history":[{"count":12,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/1013\/revisions"}],"predecessor-version":[{"id":9240,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/1013\/revisions\/9240"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media\/1023"}],"wp:attachment":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}