{"id":371,"date":"2024-11-18T17:52:36","date_gmt":"2024-11-18T09:52:36","guid":{"rendered":"http:\/\/192.168.5.24\/?p=371"},"modified":"2024-11-19T16:52:34","modified_gmt":"2024-11-19T08:52:34","slug":"%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f%e4%b8%8e%e6%96%87%e6%9c%ac%e7%bc%96%e8%be%91%e4%b8%89%e5%89%91%e5%ae%a2","status":"publish","type":"post","link":"https:\/\/bigvip.dpdns.org\/?p=371","title":{"rendered":"\u6b63\u5219\u8868\u8fbe\u5f0f\u4e0e\u6587\u672c\u7f16\u8f91\u4e09\u5251\u5ba2"},"content":{"rendered":"\n

\u4e00\u3001\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f BRE<\/strong><\/p>\n\n\n\n

\u5b57\u7b26\u7c7b\n.      \u4efb\u610f\u5355\u4e2a\u5b57\u7b26\n[ ]    \u4e2d\u62ec\u53f7\u5185\u4efb\u610f\u5355\u4e2a\u5b57\u7b26\n[^ ]   \u975e\u4e2d\u62ec\u53f7\u5185\u4efb\u610f\u5355\u4e2a\u5b57\u7b26\n\n\u6b21\u6570\u7c7b\n*      \u91cd\u590d\u4efb\u610f\u6b21\n\\{N\\}  \u91cd\u590d N \u6b21\n\\{N,\\} \u91cd\u590d\u81f3\u5c11N\u6b21\n\\{,M\\} \u91cd\u590d\u6700\u591aM\u6b21\n\\{N,M\\}\u91cd\u590d\u6700\u5c11N\u6b21\uff0c\u6700\u591aM\u6b21\n\n\u4f4d\u7f6e\u7c7b\n^     \u884c\u9996\n$     \u884c\u5c3e\n\\<    \u8bcd\u9996  \\b\n\\>    \u8bcd\u5c3e  \\b\n\n\u7efc\u5408\u7c7b\n.*          \u4efb\u610f\u4e2a\u4efb\u610f\u5b57\u7b26\n^$          \u7a7a\u884c\n^[ ]        \u4ee5\u62ec\u53f7\u5185\u7684\u4efb\u610f\u5b57\u7b26\u5f00\u5934\u7684\u884c\n^[^ ]       \u4e0d\u4ee5\u62ec\u53f7\u5185\u7684\u4efb\u610f\u5b57\u7b26\u5f00\u5934\u7684\u884c\n[:alpha:]   \u6240\u6709\u7684\u5927\u5c0f\u5199\u5b57\u6bcd\n[:digit:]   \u6240\u6709\u7684\u6570\u5b57\n[:upper:]   \u6240\u6709\u7684\u5927\u5c0f\u5b57\u6bcd\n[:lower:]   \u6240\u6709\u7684\u5c0f\u5199\u5b57\u6bcd\n[:space:]   \u6240\u6709\u7684\u7a7a\u767d\u5b57\u7b26\n[:punct:]   \u6240\u6709\u7684\u7b26\u53f7\n[:alnum:]   \u6240\u6709\u662f\u6570\u5b57\u548c\u5b57\u6bcd [a-Z0-9]\n\n\\( \\)       \u540e\u9879\u5f15\u7528 \\1<\/code><\/pre>\n\n\n\n
\u4e8c\u3001\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f ERE<\/strong><\/p>\n\n\n\n
+     \u81f3\u5c111\u6b21\n?     0\u62161\u6b21\n{N}   \u91cd\u590dN\u6b21\n{N,}  \u6700\u5c11N\u6b21\n{,M}  \u6700\u591aM\u6b21\n{N,M} \u6700\u5c11N\u6b21\uff0c\u6700\u591aM\u6b21\n|     \u6216\n()    \u7ec4\u5b57\u7b26  \uff08my|your)self<\/code><\/pre>\n\n\n\n
\u4e09\u3001Perl\u517c\u5bb9\u6b63\u5219\u8868\u8fbe\u5f0f PCRE<\/strong><\/p>\n\n\n\n
\\d    \u5339\u914d\u6570\u5b57 [0-9]\n\\w    \u5339\u914d\u5b57\u6bcd\u6570\u5b57\u4e0b\u5212\u7ebf[a-zA-Z0-9_]\n\\s    \u5339\u914d\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001\u6362\u9875\u7b26[\\t\\r\\n]<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
\u6587\u672c\u7f16\u8f91\u4e09\u5251\u5ba2\uff1agrep\u3001sed\u3001awk<\/strong><\/p>\n\n\n\n
\u56db\u3001grep<\/strong><\/p>\n\n\n\n
grep\u662f\u57fa\u4e8e\u6a21\u5f0f\u5339\u914d\u884c\uff0c\u9ed8\u8ba4\u4f7f\u7528\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/p>\n\n\n\n
\u683c\u5f0f\uff1agrep [\u9009\u9879]  \u6a21\u5f0f  [\u6587\u4ef6\u2026]<\/p>\n\n\n\n
\u5e38\u7528\u7684\u9009\u9879\u6709\uff1a<\/p>\n\n\n\n
-E  \u4f7f\u7528\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u7b49\u4e8eegrep\n-F  \u4e0d\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u7b49\u4e8efgrep\n-G  \u4f7f\u7528\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u9ed8\u8ba4\u503c\uff0c\u7b49\u4e8egrep\n-P  \u4f7f\u7528Perl\u6b63\u5219\u8868\u8fbe\u5f0f\n\n-v  \u53cd\u5411\u67e5\u627e\uff0c\u4e5f\u5c31\u662f\u4e0d\u67e5\u627e\u5339\u914d\u7684\u884c\n-i  \u5ffd\u7565\u5927\u5c0f\u5199\n-o  \u53ea\u663e\u793a\u5339\u914d\u7684\u5185\u5bb9\u800c\u4e0d\u662f\u884c\n-e  \u591a\u6761\u4ef6\u5339\u914d\n-w  \u5339\u914d\u5b8c\u6574\u7684\u5355\u8bcd\n-c  \u53ea\u663e\u793a\u5339\u914d\u7684\u884c\u6570\n-m# \u53ea\u5339\u914d#hang\n-q  \u9759\u9ed8\u6a21\u5f0f\n\n-A#  \u663e\u793a\u5339\u914d\u884c\u53ca\u5176\u540e#\u884c\n-B#  \u663e\u793a\u5339\u914d\u884c\u53ca\u5176\u524d#\u884c\n-C#  \u663e\u793a\u5339\u914d\u884c\u53ca\u5176\u524d\u540e#\u884c<\/code><\/pre>\n\n\n\n
\u5e38\u89c1\u7684\u6a21\u5f0f\u6709\uff1a<\/p>\n\n\n\n
'\u6b63\u5219\u8868\u8fbe\u5f0f'<\/code><\/pre>\n\n\n\n
grep\u4e09\u5144\u5f1f\uff1a<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u7ec3\u4e60\uff1a<\/p>\n\n\n\n
#\u5339\u914dIP\u5730\u5740 \negrep '([0-9]{1,3}\\.){3}[0-9]' <\/code><\/pre>\n\n\n\n
 \u4e94\u3001sed<\/strong><\/p>\n\n\n\n
sed\u662f\u6d41\u7f16\u8f91\u5668\uff0c\u53ef\u4ee5\u4ece\u6587\u4ef6\u4e2d\u4e00\u6b21\u8bfb\u5165\uff08\u590d\u5236\uff09\u4e00\u884c\u8fdb\u884c\u7f16\u8f91\uff0c\u7136\u540e\u628a\u7f16\u8f91\u540e\u7684\u7ed3\u679c\u8f93\u51fa\u5230\u5c4f\u5e55\u4e0a\u3002\u9ed8\u8ba4\u4f7f\u7528\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/p>\n\n\n\n
\u547d\u4ee4\u683c\u5f0f\uff1ased [\u9009\u9879]  ‘ \u8868\u8fbe\u5f0f+\u52a8\u4f5c ‘   \u6587\u4ef6\u2026\u2026 <\/p>\n\n\n\n
\u5e38\u7528\u7684\u9009\u9879\u6709\uff1a<\/p>\n\n\n\n
-r  \u4f7f\u7528\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f\n-i  \u628a\u7f16\u8f91\u540e\u7684\u8f93\u51fa\u4fee\u6539\u6e90\u6587\u4ef6\n-n  \u5173\u95ed\u9ed8\u8ba4\u7684\u8f93\u51fa\n-e  \u591a\u4e2a\u7f16\u8f91\u52a8\u4f5c\n-f  \u4ece\u811a\u672c\u6587\u4ef6\u8bfb\u53d6<\/code><\/pre>\n\n\n\n
\u5e38\u89c1\u7684\u8868\u8fbe\u5f0f\u6709\uff1a<\/p>\n\n\n\n
n              \u7b2cn\u884c\nn,m            \u4ece\u7b2cn\u884c\u5f00\u59cb\uff0c\u7b2cm\u884c\u7ed3\u675f\nn,m!           \u6392\u67e5\u4ece\u7b2cn\u884c\u5f00\u59cb\uff0c\u7b2cm\u884c\u7ed3\u675f\n\/exp\/          \u6ee1\u8db3exp\u7684\u884c\n\/exp\/,m        \u4ece\u7b2c\u4e00\u4e2a\u6ee1\u8db3exp\u7684\u884c\u5f00\u59cb\u5230\u7b2cm\u884c\nn,\/exp\/        \u4ece\u7b2cn\u884c\u5f00\u59cb\u5230\u7b2c\u4e00\u4e2a\u6ee1\u8db3exp\u7684\u884c\n\/exp1\/,\/exp2\/  \u4ece\u7b2c\u4e00\u6b21\u6ee1\u8db3exp1\u7684\u884c\u5f00\u59cb\u5230\u7b2c\u4e00\u4e2a\u6ee1\u8db3exp2\u7684\u884c<\/code><\/pre>\n\n\n\n
\u5e38\u89c1\u7684\u52a8\u4f5c\uff1a<\/p>\n\n\n\n
p  \u6253\u5370\n=  \u6253\u5370\u5f53\u524d\u884c\u884c\u53f7\ni  \u5728\u8be5\u884c\u524d\u63d2\u5165\u884c\na  \u5728\u8be5\u884c\u540e\u63d2\u5165\u884c\nc  \u66ff\u6362\u8be5\u884c\ns  \u67e5\u627e\u66ff\u6362 \u53ef\u4ee5\u914d\u5408\/g  \u652f\u6301\u540e\u9879\u5f15\u7528 & \u6216\u8005\\1\nd  \u5220\u9664\u884c\nr  \u5f53\u524d\u884c\u4e0b\u8bfb\u5165\u6587\u4ef6\u5185\u5bb9\nw  \u628a\u8be5\u884c\u53e6\u5b58\u4e3a\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u7ec3\u4e60\uff1a<\/p>\n\n\n\n
1.  \u5220\u9664centos7\u7cfb\u7edf\/etc\/grub2.cfg\u6587\u4ef6\u4e2d\u6240\u6709\u4ee5\u7a7a\u767d\u5f00\u5934\u7684\u884c\u7684\u884c\u9996\u7684\u7a7a\u767d\u5b57\u7b26    \n    sed -r 's\/^[[:space:]]+\/\/'\n2.  \u5220\u9664\/etc\/fstab\u6587\u4ef6\u4e2d\u6240\u6709\u4ee5#\u5f00\u5934\uff0c\u540e\u9762\u81f3\u5c11\u8ddf\u4e00\u4e2a\u7a7a\u767d\u5b57\u7b26\u7684\u884c\u4e2d\u7684\u884c\u9996\u7684#\u548c\u7a7a\u767d\u5b57\u7b26   \n    sed  -r 's\/^#[[:space:]]+\/\/'\n3.  \u5728centos6\u7cfb\u7edf\/root\/install.log\u6bcf\u4e00\u884c\u884c\u9996\u589e\u52a0#\u53f7  \n    sed  's\/^\/#\/'\n4.  \u5728\/etc\/fstab\u6587\u4ef6\u4e2d\u4e0d\u4ee5#\u5f00\u5934\u7684\u884c\u7684\u884c\u9996\u589e\u52a0#\u53f7   \n    sed 's\/^[^#]\/#&\/'\n5.  \u5904\u7406\/etc\/fstab\u8def\u5f84,\u4f7f\u7528sed\u547d\u4ee4\u53d6\u51fa\u5176\u76ee\u5f55\u540d\u548c\u57fa\u540d  \n    echo \"\/etc\/fstabl\"|sed -n 's#\/.*\/##p'\n    echo \"\/etc\/fstabl\"||sed -nr 's#(.*)\/.*$#\\1#p'\n6.  \u5229\u7528sed \u53d6\u51faifconfig\u547d\u4ee4\u4e2d\u672c\u673a\u7684IPv4\u5730\u5740  \n    ifconfig | sed -nr 's\/inet (([[:digit:]]{1,3}\\.){3}[[:digit:]]{1,3}).*broadcast.*\/\\1\/p'\n7.  \u7edf\u8ba1centos\u5b89\u88c5\u5149\u76d8\u4e2dPackage\u76ee\u5f55\u4e0b\u7684\u6240\u6709rpm\u6587\u4ef6\u7684\u4ee5.\u5206\u9694\u5012\u6570\u7b2c\u4e8c\u4e2a\u5b57\u6bb5\u7684\u91cd\u590d\u6b21\u6570 \n    ls |sed -nr 's\/.*\\.(.*)\\.rpm$\/\\1\/p'|sort| uniq -c\n8.  \u7edf\u8ba1\/etc\/init.d\/functions\u6587\u4ef6\u4e2d\u6bcf\u4e2a\u5355\u8bcd\u7684\u51fa\u73b0\u6b21\u6570\uff0c\u5e76\u6392\u5e8f (\u7528grep\u548csed\u4e24\u79cd\u65b9\u6cd5\u5206\u522b\u5b9e\u73b0)   \n    grep -oE '[a-Z]+' functions |sort | uniq -c | sort -n\n    sed -nr 's\/[[:punct:]]|[[:space:]]|[[:digit:]]\/\\n\/gp' functions | grep -v '^$'| sort | uniq -c | sort -n<\/code><\/pre>\n\n\n\n
\u516d\u3001awk<\/strong><\/p>\n\n\n\n
\u8bed\u6cd5\uff1aawk \u9009\u9879 \u2018BEGIN{\u52a8\u4f5c};\u6a21\u5f0f{\u52a8\u4f5c};END{\u52a8\u4f5c}\u2019 \u6587\u4ef6<\/p>\n\n\n\n
\u5e38\u7528\u9009\u9879\uff1a<\/p>\n\n\n\n
-F  \u5206\u9694\u7b26\n-v  \u5b9a\u4e49\u53d8\u91cf\u5e76\u8d4b\u503c\n-f  \u4ece\u811a\u672c\u6587\u4ef6\u8bfb\u53d6\u6a21\u5f0f\u52a8\u4f5c<\/code><\/pre>\n\n\n\n
\u5e38\u89c1\u6a21\u5f0f\uff1a<\/p>\n\n\n\n
\u9ed8\u8ba4\u652f\u6301\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f\n\/\u6b63\u5219\u8868\u8fbe\u5f0f\/        \u5339\u914d\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u884c\n\u6bd4\u8f83\u8868\u8fbe\u5f0f          \u6ee1\u8db3\u6bd4\u8f83\u8868\u8fbe\u5f0f\u7684\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u503c\u6216\u5b57\u7b26\u4e32\u7684\u6bd4\u8f83\u64cd\u4f5c\npattern1, pattern2   \u8868\u793a\u4ece\u7b2c\u4e00\u4e2a\u5339\u914d\u6a21\u5f0f1\u7684\u884c\u5f00\u59cb\u5230\u7b2c\u4e00\u4e2a\u5339\u914d\u6a21\u5f0f2\u7684\u884c\u7ed3\u675f<\/code><\/pre>\n\n\n\n
\u5e38\u89c1\u7684\u52a8\u4f5c\uff1a<\/p>\n\n\n\n
print    \u9ed8\u8ba4\u52a8\u4f5c\u6253\u5370\u6240\u6709\u5217\uff0c\u591a\u4e2a\u52a8\u4f5c\u9700\u8981\u4f7f\u7528\uff1b\u9694\u5f00\nprintf   \u683c\u5f0f\u5316\u8f93\u51fa\uff0c\u9ed8\u8ba4\u884c\u5c3e\u4e0d\u884c\u53f7  -\u5de6\u5bf9\u9f50  %-20d  \u6570\u5b57\u53d8\u91cf  %s  \u5b57\u7b26\u53d8\u91cf\n\u8ba1\u7b97\u548c\u8d4b\u503c   \u53ef\u4ee5\u8fdb\u884c\u6570\u503c\u8ba1\u7b97\u548c\u53d8\u91cf\u8d4b\u503c\uff0c\u4f8b\u5982 sum += $1 \u3002\n\u6761\u4ef6\u5224\u65ad   \u4f7f\u7528 if-else \u7ed3\u6784\u6839\u636e\u6761\u4ef6\u6267\u884c\u4e0d\u540c\u7684\u64cd\u4f5c\u3002<\/code><\/pre>\n\n\n\n
\u5e38\u89c1\u7684\u5185\u7f6e\u53d8\u91cf\uff1a<\/p>\n\n\n\n
$0       \u6240\u6709\u5217\n$1       \u7b2c\u4e00\u5217\n$NF      \u6700\u540e\u4e00\u5217\n$(NF-1)  \u5012\u6570\u7b2c\u4e8c\u5217\nNF       \u603b\u5217\u6570\nNR       \u5f53\u524d\u884c\u53f7\nFS       \u8f93\u5165\u5206\u9694\u7b26\uff0c\u9ed8\u8ba4\u4e3a\u7a7a\u683c\nOFS      \u8f93\u51fa\u5206\u9694\u7b26\uff0c\u9ed8\u8ba4\u4e3a\u7a7a\u683c<\/code><\/pre>\n\n\n\n
\u6837\u4f8b\uff1a<\/p>\n\n\n\n
1\u3001\u53ea\u67e5\u770b ett.txt \u6587\u4ef6\uff08100 \u884c\uff09\u5185\u7b2c 20 \u5230\u7b2c 30 \u884c\u7684\u5185\u5bb9\n\tawk 'NR==20,NR==30'\n2\u3001[root@localhost tmp]# cat jflinux.txt\nI am jflinux,myqq is 49000448\n\u73b0\u5728\u9700\u8981\u8fc7\u6ee4 jflinux,49000448 \u5b57\u7b26\u4e32\uff0c\u8bf7\u7ed9\u51fa\u547d\u4ee4\n\tawk -F[,' '] '{print $3,$6}'\n3\u3001\u8bf7\u6267\u884c\u547d\u4ee4\u53d6\u51fa linux \u4e2d eth0 \u7684 IP \u5730\u5740\uff0c\u53ea\u8981 Ip,\u5176\u4ed6\u4fe1\u606f\u4e0d\u8981\n\tifconfig eth0| awk '\/\\<inet\\>\/{print $2}' \n4\u3001\u901a\u8fc7 APACHE \u8bbf\u95ee\u65e5\u5fd7 access.log \u7edf\u8ba1 IP \u548c\u6bcf\u4e2a\u5730\u5740\u8bbf\u95ee\u7684\u6b21\u6570\uff0c\u5217\u51fa\u8bbf\u95ee\u91cf\u524d 10 \u540d\u7684 IP \u5730\u5740\uff0c\u5199\u51fa\u5177\n\u4f53\u547d\u4ee4\n\tawk '{print $1}' access_log-20231029 | sort |uniq -c | sort -rn | head<\/code><\/pre>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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