\u666e\u901a\u6570\u7ec4\u901a\u5e38\u7528\u4e8e\u9700\u8981\u6309\u987a\u5e8f\u8bbf\u95ee\u6216\u5904\u7406\u7684\u573a\u666f\uff0c\u5982\u5b58\u50a8\u4e00\u7cfb\u5217\u6570\u5b57\u3001\u5b57\u7b26\u4e32\u6216\u5bf9\u8c61\u3002\u5173\u8054\u6570\u7ec4\u5219\u66f4\u9002\u5408\u4e8e\u9700\u8981\u901a\u8fc7\u7279\u5b9a\u952e\u6765\u6807\u8bc6\u548c\u8bbf\u95ee\u7684\u573a\u666f\uff0c\u5982\u8868\u793a\u914d\u7f6e\u8bbe\u7f6e\u6216\u7528\u6237\u4fe1\u606f\u7684\u952e\u503c\u5bf9\u3002<\/p>\n
\u603b\u7ed3<\/h4>\n
\u666e\u901a\u6570\u7ec4\u548c\u5173\u8054\u6570\u7ec4\u5404\u6709\u5176\u72ec\u7279\u7684\u7279\u70b9\u548c\u9002\u7528\u573a\u666f\u3002\u5728\u9009\u62e9\u4f7f\u7528\u54ea\u79cd\u7c7b\u578b\u7684\u6570\u7ec4\u65f6\uff0c\u5e94\u8003\u8651\u6570\u636e\u7ed3\u6784\u7684\u9700\u6c42\u548c\u9884\u671f\u7528\u9014\u3002\u6b63\u786e\u9009\u62e9\u6570\u7ec4\u7c7b\u578b\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6267\u884c\u6548\u7387\u3002<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
7.declare<\/h1>\n
declare\u00a0\u547d\u4ee4\u662f Bash shell \u4e2d\u7684\u4e00\u4e2a\u5185\u7f6e\u547d\u4ee4\uff0c\u7528\u4e8e\u58f0\u660e\u53d8\u91cf\u548c\u51fd\u6570\uff0c\u5e76\u53ef\u4ee5\u4e3a\u53d8\u91cf\u8bbe\u7f6e\u5c5e\u6027\u3002\u5b83\u80fd\u591f\u8ba9\u7528\u6237\u5728 Shell \u811a\u672c\u4e2d\u5bf9\u53d8\u91cf\u8fdb\u884c\u66f4\u4e3a\u7cbe\u7ec6\u7684\u63a7\u5236\uff0c\u5305\u62ec\u53d8\u91cf\u7684\u7c7b\u578b\u3001\u662f\u5426\u53ea\u8bfb\u3001\u662f\u5426\u5168\u5c40\u6709\u6548\u7b49\u3002<\/p>\n
declare \u547d\u4ee4\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
declare [options] [name[=value]]<\/pre>\n\u5176\u4e2d\u00a0options\u00a0\u662f\u547d\u4ee4\u7684\u9009\u9879\uff0cname\u00a0\u662f\u53d8\u91cf\u6216\u51fd\u6570\u7684\u540d\u79f0\uff0cvalue\u00a0\u662f\u53d8\u91cf\u7684\u503c\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u00a0name\uff0c\u5219\u00a0declare\u00a0\u4f1a\u663e\u793a\u6240\u6709\u53d8\u91cf\u7684\u5c5e\u6027\u3002<\/p>\n
\u5e38\u7528\u9009\u9879<\/h3>\n
-a\uff1a\u58f0\u660e\u53d8\u91cf\u4e3a\u6570\u7ec4\u3002
\n-A\uff1a\u58f0\u660e\u53d8\u91cf\u4e3a\u5173\u8054\u6570\u7ec4\uff08\u5728\u4e00\u4e9b\u7248\u672c\u7684 Bash \u4e2d\u53ef\u80fd\u4e0d\u88ab\u652f\u6301\uff09\u3002
\n-i\uff1a\u58f0\u660e\u53d8\u91cf\u4e3a\u6574\u6570\u7c7b\u578b\u3002
\n-l\uff1a\u5c06\u53d8\u91cf\u8f6c\u6362\u4e3a\u5c0f\u5199\u3002
\n-r\uff1a\u58f0\u660e\u53d8\u91cf\u4e3a\u53ea\u8bfb\uff0c\u4e00\u65e6\u8bbe\u5b9a\u5c31\u4e0d\u80fd\u4fee\u6539\u3002
\n-x\uff1a\u58f0\u660e\u53d8\u91cf\u4e3a\u73af\u5883\u53d8\u91cf\uff0c\u4f7f\u5176\u5728\u5b50\u8fdb\u7a0b\u4e2d\u53ef\u7528\u3002
\n-p\uff1a\u663e\u793a\u53d8\u91cf\u7684\u5c5e\u6027\u548c\u503c\u3002
\n-f\uff1a\u663e\u793a\u51fd\u6570\u7684\u5b9a\u4e49\u3002
\n-u\uff1a\u5c06\u53d8\u91cf\u8d4b\u503c\u65f6\u8f6c\u4e3a\u5927\u5199\u3002
\n-n\uff1a\u521b\u5efa\u540d\u79f0\u5f15\u7528\u3002<\/p>\n\u4f7f\u7528\u793a\u4f8b<\/h2>\n
\u58f0\u660e\u5173\u8054\u6570\u7ec4<\/h4>\n
declare<\/span> -A array\r\narray[\"key\"<\/span>]=\"value\"\r\necho<\/span> ${array[\"key\"]}<\/span><\/span><\/pre>\n\u58f0\u660e\u6574\u6570\u578b\u53d8\u91cf<\/h4>\n
declare -i num=10 \r\necho $num # \u8f93\u51fa 10<\/pre>\n\u58f0\u660e\u6570\u7ec4\u53d8\u91cf<\/h4>\n
declare -a arr=(\"apple\" \"banana\" \"cherry\")\r\necho ${arr} # \u8f93\u51fa banana[1]<\/pre>\n\u58f0\u660e\u53ea\u8bfb\u53d8\u91cf<\/h4>\n
declare -r var=\"Hello\"\r\necho $var # \u8f93\u51fa Hello\r\nvar=\"World\" # \u8fd9\u4e00\u884c\u4f1a\u5bfc\u81f4\u9519\u8bef\uff0c\u56e0\u4e3a var \u662f\u53ea\u8bfb\u53d8\u91cf<\/pre>\n\u663e\u793a\u6240\u6709\u58f0\u660e\u7684\u53d8\u91cf<\/h4>\n
declare -p # \u663e\u793a\u6240\u6709\u58f0\u660e\u7684\u53d8\u91cf<\/pre>\n\u58f0\u660e\u5e76\u5bfc\u51fa\u73af\u5883\u53d8\u91cf<\/h4>\n
declare -x PATH=\"\/usr\/local\/bin:$PATH\"<\/pre>\n\u6ce8\u610f\u4e8b\u9879<\/h3>\n
declare\u00a0\u547d\u4ee4\u5728\u4e0d\u540c\u7248\u672c\u7684 Bash \u4e2d\u53ef\u80fd\u6709\u7ec6\u5fae\u5dee\u522b\uff0c\u6709\u4e9b\u9009\u9879\u53ef\u80fd\u5728\u65e7\u7248\u672c\u4e2d\u88ab\u5e9f\u5f03\u6216\u672a\u88ab\u652f\u6301\u3002<\/p>\n
\u4f7f\u7528\u00a0declare\u00a0\u547d\u4ee4\u65f6\u8981\u5c0f\u5fc3\uff0c\u56e0\u4e3a\u5b83\u53ef\u80fd\u4f1a\u5f71\u54cd\u5230\u53d8\u91cf\u7684\u9ed8\u8ba4\u884c\u4e3a\u3002\u4f8b\u5982\uff0c\u58f0\u660e\u4e3a\u6574\u578b\u7684\u53d8\u91cf\u5728\u8d4b\u503c\u65f6\u4f1a\u8fdb\u884c\u7b97\u672f\u8bc4\u4f30\u3002<\/p>\n
\u58f0\u660e\u4e3a\u53ea\u8bfb\u7684\u53d8\u91cf\u65e0\u6cd5\u518d\u6b21\u8d4b\u503c\uff0c\u8fd9\u5728\u7f16\u5199\u811a\u672c\u65f6\u975e\u5e38\u6709\u7528\uff0c\u53ef\u4ee5\u9632\u6b62\u610f\u5916\u4fee\u6539\u53d8\u91cf\u7684\u503c\u3002<\/p>\n
\u7edf\u8ba1web\u7684\u670d\u52a1\u5668IP\u5730\u5740\u51fa\u73b0\u7684\u6b21\u6570<\/h4>\n
#!\/bin\/bash\r\n\r\n# \u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\r\nlog_file=\"\/var\/log\/nginx\/access.log\"\r\n\r\n# \u521b\u5efa\u4e00\u4e2a\u5173\u8054\u6570\u7ec4\u6765\u5b58\u50a8 IP \u5730\u5740\u53ca\u5176\u51fa\u73b0\u6b21\u6570\r\ndeclare -A ip_count\r\n\r\nwhile read line; do\r\n ip=$(echo \"$line\" | awk '{print $1}')\r\n # \u5982\u679c IP \u5df2\u7ecf\u5728\u6570\u7ec4\u4e2d\uff0c\u589e\u52a0\u8ba1\u6570\r\n if [ -n \"${ip_count[$ip]}\" ]; then\r\n ((ip_count[$ip]++))\r\n else\r\n # \u5982\u679c IP \u4e0d\u5728\u6570\u7ec4\u4e2d\uff0c\u521d\u59cb\u5316\u4e3a 1\r\n ip_count[$ip]=1\r\n fi\r\ndone < \"$log_file\"\r\n\r\n# \u8f93\u51fa IP \u5730\u5740\u53ca\u5176\u51fa\u73b0\u6b21\u6570\r\nfor ip in \"${!ip_count[@]}\"; do\r\n echo \"IP: $ip, Count: ${ip_count[$ip]}\"\r\ndone<\/pre>\n<\/p>\n","protected":false},"excerpt":{"rendered":"
1.Shell\u6570\u7ec4\u8be6\u89e3 Shell \u6570\u7ec4\u662fShell\u811a\u672c\u7f16\u7a0b\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5b83\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u5728\u5904\u7406\u590d\u6742\u6570\u636e […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[25],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1353"}],"collection":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1353"}],"version-history":[{"count":7,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1353\/revisions"}],"predecessor-version":[{"id":1365,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1353\/revisions\/1365"}],"wp:attachment":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}