{"id":3360,"date":"2019-05-28T20:14:46","date_gmt":"2019-05-28T12:14:46","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=3360"},"modified":"2019-05-29T11:55:33","modified_gmt":"2019-05-29T03:55:33","slug":"linux%ef%bc%9aawk%e5%91%bd%e4%bb%a4%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/3360","title":{"rendered":"Linux\uff1aawk\u547d\u4ee4\u8be6\u89e3"},"content":{"rendered":"
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\u539f\u6587\u5730\u5740<\/a><\/p>\n

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\u7b80\u5355\u4f7f\u7528\uff1a<\/h2>\n

awk \uff1a\u5bf9\u4e8e\u6587\u4ef6\u4e2d\u4e00\u884c\u884c\u7684\u72ec\u5904\u6765\u6267\u884c\u64cd\u4f5c \u3002<\/p>\n

awk -F \uff1a'{print $1,$4}’\u00a0\u00a0 :\u4f7f\u7528\u2018\uff1a\u2019\u6765\u5206\u5272\u8fd9\u4e00\u884c\uff0c\u628a\u8fd9\u4e00\u884c\u7684\u7b2c\u4e00\u7b2c\u56db\u4e2a\u57df\u6253\u5370\u51fa\u6765 \u3002<\/p>\n

AWK<\/strong>\u547d\u4ee4\u4ecb\u7ecd<\/strong><\/h2>\n

awk \u8bed\u8a00\u7684\u6700\u57fa\u672c\u529f\u80fd\u662f\u5728\u6587\u4ef6\u6216\u5b57\u7b26\u4e32\u4e2d\u57fa\u4e8e\u6307\u5b9a\u89c4\u5219\u6d4f\u89c8\u548c\u62bd\u53d6\u4fe1\u606f\uff0cawk \u62bd\u53d6\u4fe1\u606f\u540e\uff0c\u624d\u80fd\u8fdb\u884c\u5176\u4ed6\u6587\u672c\u64cd\u4f5c\uff0c\u5b8c\u6574\u7684 awk \u811a\u672c\u901a\u5e38\u7528\u6765\u683c\u5f0f\u5316\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u4fe1\u606f<\/p>\n

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1. \u8c03\u7528 awk:<\/h2>\n

\u7b2c\u4e00\u79cd\u547d\u4ee4\u884c\u65b9\u5f0f\uff0c\u5982:<\/p>\n

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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

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awk<\/span> [<\/span>–<\/span>Field<\/span>–<\/span>separator<\/span>]<\/span> ‘commands’<\/span> input<\/span>–<\/span>file<\/span>(<\/span>s<\/span>)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u8fd9\u91cc commands \u662f\u771f\u6b63\u7684 awk \u547d\u4ee4\uff0c[-F \u57df\u5206\u9694\u7b26]\u662f\u53ef\u9009\u7684\uff0cawk \u9ed8\u8ba4\u4f7f\u7528\u7a7a\u683c\u5206\u9694\uff0c\u56e0\u6b64\u5982\u679c\u8981\u6d4f\u89c8\u57df\u95f4\u6709\u7a7a\u683c\u7684\u6587\u672c\uff0c\u4e0d\u5fc5\u6307\u5b9a\u8fd9\u4e2a\u9009\u9879\uff0c\u4f46\u5982\u679c\u6d4f\u89c8\u5982 passwd \u6587\u4ef6\uff0c\u6b64\u6587\u4ef6\u5404\u57df\u4f7f\u7528\u5192\u53f7\u4f5c\u4e3a\u5206\u9694\u7b26\uff0c\u5219\u5fc5\u987b\u4f7f\u7528-F \u9009\u9879:\u00a0\u00a0 awk -F : ‘commands’ input-file<\/p>\n

\u7b2c\u4e8c\u79cd\uff0c\u5c06\u6240\u6709 awk \u547d\u4ee4\u63d2\u5165\u4e00\u4e2a\u6587\u4ef6\uff0c\u5e76\u4f7f awk \u7a0b\u5e8f\u53ef\u6267\u884c\uff0c\u7136\u540e\u7528 awk \u547d\u4ee4\u89e3\u91ca\u5668\u4f5c\u4e3a\u811a\u672c\u7684\u9996\u884c\uff0c\u4ee5\u4fbf\u901a\u8fc7\u952e\u5165\u811a\u672c\u540d\u79f0\u6765\u8c03\u7528\u5b83<\/p>\n

\u7b2c\u4e09\u79cd\uff0c\u5c06\u6240\u6709 awk \u547d\u4ee4\u63d2\u5165\u4e00\u4e2a\u5355\u72ec\u6587\u4ef6\uff0c\u7136\u540e\u8c03\u7528\uff0c\u5982:<\/p>\n

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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

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awk<\/span> –<\/span>f<\/span> awk<\/span>–<\/span>script<\/span>–<\/span>file<\/span> input<\/span>–<\/span>file<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

-f \u9009\u9879\u6307\u660e\u5728\u6587\u4ef6 awk-script-file \u7684 awk \u811a\u672c\uff0cinput-file \u662f\u4f7f\u7528 awk \u8fdb\u884c\u6d4f\u89c8\u7684\u6587\u4ef6\u540d<\/p>\n

2. awk \u811a\u672c:<\/h2>\n

awk \u811a\u672c\u7531\u5404\u79cd\u64cd\u4f5c\u548c\u6a21\u5f0f\u7ec4\u6210\uff0c\u6839\u636e\u5206\u9694\u7b26(-F \u9009\u9879)\uff0c\u9ed8\u8ba4\u4e3a\u7a7a\u683c\uff0c\u8bfb\u53d6\u7684\u5185\u5bb9\u4f9d\u6b21\u653e\u7f6e\u5230\u5bf9\u5e94\u7684\u57df\u4e2d\uff0c\u4e00\u884c\u4e00\u884c\u8bb0\u5f55\u8bfb\u53d6\uff0c\u76f4\u5230\u6587\u4ef6\u5c3e<\/p>\n

2.1. \u00a0\u6a21\u5f0f\u548c\u52a8\u4f5c<\/h2>\n

\u4efb\u4f55 awk \u8bed\u53e5\u90fd\u662f\u7531\u6a21\u5f0f\u548c\u52a8\u4f5c\u7ec4\u6210\uff0c\u5728\u4e00\u4e2a awk \u811a\u672c\u4e2d\u53ef\u80fd\u6709\u8bb8\u591a\u8bed\u53e5\u3002\u6a21\u5f0f\u90e8\u5206\u51b3\u5b9a\u52a8\u4f5c\u8bed\u53e5\u4f55\u65f6\u89e6\u53d1\u53ca\u89e6\u53d1\u4e8b\u4ef6\u3002\u52a8\u4f5c\u5373\u5bf9\u6570\u636e\u8fdb\u884c\u7684\u64cd\u4f5c\uff0c\u5982\u679c\u7701\u53bb\u6a21\u5f0f\u90e8\u5206\uff0c\u52a8\u4f5c\u5c06\u65f6\u523b\u4fdd\u6301\u6267\u884c\u72b6\u6001<\/p>\n

\u6a21\u5f0f\u53ef\u4ee5\u662f\u4efb\u4f55\u6761\u4ef6\u8bed\u53e5\u6216\u590d\u5408\u8bed\u53e5\u6216\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u6a21\u5f0f\u5305\u542b\u4e24\u4e2a\u7279\u6b8a\u5b57\u6bb5 BEGIN \u548c END\uff0c\u4f7f\u7528 BEGIN \u8bed\u53e5\u8bbe\u7f6e\u8ba1\u6570\u548c\u6253\u5370\u5934\uff0cBEGIN \u8bed\u53e5\u4f7f\u7528\u5728\u4efb\u4f55\u6587\u672c\u6d4f\u89c8\u52a8\u4f5c\u4e4b\u524d\uff0c\u4e4b\u540e\u6587\u672c\u6d4f\u89c8\u52a8\u4f5c\u4f9d\u636e\u8f93\u5165\u6587\u4ef6\u5f00\u59cb\u6267\u884c;END \u8bed\u53e5\u7528\u6765\u5728 awk \u5b8c\u6210\u6587\u672c\u6d4f\u89c8\u52a8\u4f5c\u540e\u6253\u5370\u8f93\u51fa\u6587\u672c\u603b\u6570\u548c\u7ed3\u5c3e\u72b6\u6001\u6807\u5fd7\uff0c\u6709\u52a8\u4f5c\u5fc5\u987b\u4f7f\u7528{}\u62ec\u8d77\u6765<\/p>\n

\u5b9e\u9645\u52a8\u4f5c\u5728\u5927\u62ec\u53f7{}\u5185\u6307\u660e\uff0c\u5e38\u7528\u6765\u505a\u6253\u5370\u52a8\u4f5c\uff0c\u4f46\u662f\u8fd8\u6709\u66f4\u957f\u7684\u4ee3\u7801\u5982 if \u548c\u5faa\u73af looping \u8bed\u53e5\u53ca\u5faa\u73af\u9000\u51fa\u7b49\uff0c\u5982\u679c\u4e0d\u6307\u660e\u91c7\u53d6\u4ec0\u4e48\u52a8\u4f5c\uff0cawk \u9ed8\u8ba4\u6253\u5370\u51fa\u6240\u6709\u6d4f\u89c8\u51fa\u7684\u8bb0\u5f55<\/p>\n

2.2. \u57df\u548c\u8bb0\u5f55:<\/h2>\n

awk \u6267\u884c\u65f6\uff0c\u5176\u6d4f\u89c8\u6807\u8bb0\u4e3a$1\uff0c$2…$n\uff0c\u8fd9\u79cd\u65b9\u6cd5\u79f0\u4e3a\u57df\u6807\u8bb0\u3002\u4f7f\u7528$1\uff0c$3 \u8868\u793a\u53c2\u7167\u7b2c 1 \u548c\u7b2c 3 \u57df\uff0c\u6ce8\u610f\u8fd9\u91cc\u4f7f\u7528\u9017\u53f7\u5206\u9694\u57df\uff0c\u4f7f\u7528$0 \u8868\u793a\u4f7f\u7528\u6240\u6709\u57df\u3002\u4f8b\u5982:<\/p>\n

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awk<\/span> ‘{print $0}’<\/span> temp<\/span>.txt<\/span> ><\/span> sav<\/span>.txt<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u8868\u793a\u6253\u5370\u6240\u6709\u57df\u5e76\u628a\u7ed3\u679c\u91cd\u5b9a\u5411\u5230 sav.txt \u4e2d<\/p>\n

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awk<\/span> ‘{print $0}’<\/span> temp<\/span>.txt<\/span>|<\/span>tee<\/span> sav<\/span>.txt<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u548c\u4e0a\u4f8b\u76f8\u4f3c\uff0c\u4e0d\u540c\u7684\u662f\u5c06\u5728\u5c4f\u5e55\u4e0a\u663e\u793a\u51fa\u6765<\/p>\n

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awk<\/span> ‘{print $1,$4}’<\/span> temp<\/span>.txt<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u53ea\u6253\u5370\u51fa\u7b2c 1 \u548c\u7b2c 4 \u57df<\/p>\n

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awk<\/span> ‘BEGIN {print “NAME\u00a0\u00a0GRADE\\n—-“} {print $1″\\t”$4}’<\/span> temp<\/span>.txt<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u8868\u793a\u6253\u4fe1\u606f\u5934\uff0c\u5373\u8f93\u5165\u7684\u5185\u5bb9\u7684\u7b2c\u4e00\u884c\u524d\u52a0\u4e0a”NAME\u00a0 GRADE\\n————-“\uff0c\u540c\u65f6\u5185\u5bb9\u4ee5 tab \u5206\u5f00<\/p>\n

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awk<\/span> ‘BEGIN {print “being”} {print $1} END {print “end”}’<\/span> temp<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u540c\u65f6\u6253\u5370\u4fe1\u606f\u5934\u548c\u4fe1\u606f\u5c3e<\/p>\n

2.3. \u6761\u4ef6\u64cd\u4f5c\u7b26:<\/h2>\n

<\u3001<=\u3001==\u3001!=\u3001>=\u3001~\u5339\u914d\u6b63\u5219\u8868\u8fbe\u5f0f\u3001!~\u4e0d\u5339\u914d\u6b63\u5219\u8868\u8fbe\u5f0f<\/p>\n

\u5339\u914d:awk ‘{if ($4~\/ASIMA\/) print $0}’ temp\u00a0\u8868\u793a\u5982\u679c\u7b2c\u56db\u4e2a\u57df\u5305\u542b ASIMA\uff0c\u5c31\u6253\u5370\u6574\u6761<\/p>\n

\u7cbe\u786e\u5339\u914d:awk ‘$3==”48″ {print $0}’ temp\u00a0\u00a0\u00a0\u00a0\u53ea\u6253\u5370\u7b2c 3 \u57df\u7b49\u4e8e”48″\u7684\u8bb0\u5f55<\/p>\n

\u4e0d\u5339\u914d:\u00a0 awk ‘$0 !~ \/ASIMA\/’ temp\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6253\u5370\u6574\u6761\u4e0d\u5305\u542b ASIMA \u7684\u8bb0\u5f55<\/p>\n

\u4e0d\u7b49\u4e8e:\u00a0 awk ‘$1 != “asima”‘ temp<\/p>\n

\u5c0f\u4e8e:\u00a0\u00a0\u00a0 awk ‘{if ($1<$2) print $1 “is smaller”}’ temp<\/p>\n

\u8bbe\u7f6e\u5927\u5c0f\u5199: awk ‘\/[Gg]reen\/’ temp\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6253\u5370\u6574\u6761\u5305\u542b Green\uff0c\u6216\u8005 green \u7684\u8bb0\u5f55<\/p>\n

\u4efb\u610f\u5b57\u7b26: awk ‘$1 ~\/^…a\/’ temp\u00a0\u00a0\u00a0\u00a0\u6253\u5370\u7b2c 1 \u57df\u4e2d\u7b2c\u56db\u4e2a\u5b57\u7b26\u662f a \u7684\u8bb0\u5f55\uff0c\u7b26\u53f7\u2019^\u2019\u4ee3\u8868\u884c\u9996\uff0c\u7b26\u5408\u2019.\u2019\u4ee3\u8868\u4efb\u610f\u5b57\u7b26<\/p>\n

\u6216\u5173\u7cfb\u5339\u914d: awk ‘$0~\/(abc)|(efg)\/’ temp\u00a0\u00a0\u00a0\u4f7f\u7528|\u65f6\uff0c\u8bed\u53e5\u9700\u8981\u62ec\u8d77\u6765<\/p>\n

AND \u4e0e\u5173\u7cfb:\u00a0 awk ‘{if ( $1==”a” && $2==”b” ) print $0}’ temp<\/p>\n

OR \u6216\u5173\u7cfb:\u00a0\u00a0 awk ‘{if ($1==”a” || $1==”b”) print $0}’ temp<\/p>\n

2.4. awk \u5185\u7f6e\u53d8\u91cf:<\/h2>\n
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ARGC<\/td>\n\u547d\u4ee4\u884c\u53c2\u6570\u4e2a\u6570<\/td>\nNF<\/td>\n\u00a0\u6d4f\u89c8\u8bb0\u5f55\u7684\u57df\u4e2a\u6570<\/td>\n<\/tr>\n
AGRV<\/td>\n\u547d\u4ee4\u884c\u53c2\u6570\u6392\u5217<\/td>\nNR<\/td>\n\u5df2\u8bfb\u7684\u8bb0\u5f55\u6570<\/td>\n<\/tr>\n
ENVIRON<\/td>\n\u652f\u6301\u961f\u5217\u4e2d\u7cfb\u7edf\u73af\u5883\u53d8\u91cf\u7684\u4f7f\u7528<\/td>\n\u00a0OFS<\/td>\n\u8f93\u51fa\u57df\u5206\u9694\u7b26<\/td>\n<\/tr>\n
\u00a0 FILENAME<\/td>\nawk \u6d4f\u89c8\u7684\u6587\u4ef6\u540d<\/td>\n\u00a0ORS<\/td>\n\u8f93\u51fa\u8bb0\u5f55\u5206\u9694\u7b26<\/td>\n<\/tr>\n
FNR<\/td>\n\u6d4f\u89c8\u6587\u4ef6\u7684\u8bb0\u5f55\u6570<\/td>\nRS<\/td>\n\u63a7\u5236\u8bb0\u5f55\u5206\u9694\u7b26<\/td>\n<\/tr>\n
FS<\/td>\n\u8bbe\u7f6e\u8f93\u5165\u57df\u5206\u9694\u7b26\uff0c\u540c- F \u9009\u9879<\/td>\nNF<\/td>\n\u00a0\u6d4f\u89c8\u8bb0\u5f55\u7684\u57df\u4e2a\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

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awk<\/span> ‘END {print NR}’<\/span> temp<\/span>\u5728\u6700\u540e\u6253\u5370\u5df2\u8bfb\u8bb0\u5f55\u6761\u6570<\/div>\n
awk<\/span> ‘{print NF\uff0cNR\uff0c$0} END {print FILENAME}’<\/span> temp\u00a0\u00a0 <\/span><\/div>\n
awk<\/span> ‘{if (NR>0 && $4~\/Brown\/) print $0}’<\/span> temp<\/span>\u81f3\u5c11\u5b58\u5728\u4e00\u6761\u8bb0\u5f55\u4e14\u5305\u542bBrown\u00a0\u00a0<\/span><\/div>\n
NF<\/span>\u7684\u53e6\u4e00\u7528\u6cd5:<\/span>echo<\/span> $PWD<\/span> |<\/span> awk<\/span> –<\/span>F<\/span>\/<\/span> ‘{print $NF}’<\/span>\u663e\u793a\u5f53\u524d\u76ee\u5f55\u540d<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

 <\/p>\n<\/div>\n

2.5. awk \u64cd\u4f5c\u7b26:<\/h2>\n

\u5728 awk \u4e2d\u4f7f\u7528\u64cd\u4f5c\u7b26\uff0c\u57fa\u672c\u8868\u8fbe\u5f0f\u53ef\u4ee5\u5212\u5206\u6210\u6570\u5b57\u578b\u3001\u5b57\u7b26\u4e32\u578b\u3001\u53d8\u91cf\u578b\u3001\u57df\u53ca\u6570\u7ec4\u5143\u7d20<\/p>\n

\u8bbe\u7f6e\u8f93\u5165\u57df\u5230\u53d8\u91cf\u540d:<\/p>\n

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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘{name=$1;six=$3; if (six==”man”) print name ” is ” six}’<\/span> temp<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u57df\u503c\u6bd4\u8f83\u64cd\u4f5c:<\/p>\n

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<\/div>\n<\/div>\n
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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘BEGIN {BASE=”27″} {if ($4<BASE) print $0}’<\/span> temp<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u4fee\u6539\u6570\u503c\u57df\u53d6\u503c:(\u539f\u8f93\u5165\u6587\u4ef6\u4e0d\u4f1a\u88ab\u6539\u53d8)<\/p>\n

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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘{if ($1==”asima”) $6=$6-1;print $1\uff0c$6\uff0c$7}’<\/span> temp<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u4fee\u6539\u6587\u672c\u57df:<\/p>\n

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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘{if ($1==”asima) ($1==”desc”);print $1}’<\/span> temp<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u53ea\u663e\u793a\u4fee\u6539\u8bb0\u5f55:(\u53ea\u663e\u793a\u6240\u9700\u8981\u7684\uff0c\u533a\u522b\u4e0a\u4e00\u6761\u547d\u4ee4\uff0c\u6ce8\u610f{})<\/p>\n

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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘{if ($1==”asima) {$1==”desc”;print$1}}’<\/span> temp<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u521b\u5efa\u65b0\u7684\u8f93\u51fa\u57df:<\/p>\n

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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

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1<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘{$4=$3-$2; print $4}’<\/span> temp<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u7edf\u8ba1\u5217\u503c:<\/p>\n

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<\/div>\n<\/div>\n
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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

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1<\/div>\n
2<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘(tot+=$3);END {print tot}’<\/span> temp<\/span>\u4f1a\u663e\u793a\u6bcf\u5217\u7684\u5185\u5bb9<\/div>\n
awk<\/span> ‘{(tot+=$3)};END {print tot}’<\/span> temp<\/span>\u53ea\u663e\u793a\u6700\u540e\u7684\u7ed3\u679c<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u6587\u4ef6\u957f\u5ea6\u76f8\u52a0:<\/p>\n

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<\/div>\n<\/div>\n
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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

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1<\/div>\n<\/div>\n<\/td>\n
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ls<\/span> –<\/span>l<\/span>|<\/span>awk<\/span> ‘\/^[^d]\/ {print $9″\\t”$5} {tot+=$5} END{print “totKB:” tot}’<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u53ea\u5217\u51fa\u6587\u4ef6\u540d:<\/p>\n

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<\/div>\n<\/div>\n
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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n<\/div>\n<\/td>\n
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ls<\/span> –<\/span>l<\/span>|<\/span>awk<\/span> ‘{print $9}’<\/span>\u5e38\u89c4\u60c5\u51b5\u6587\u4ef6\u540d\u662f\u7b2c9<\/span>\u57df<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.6. awk \u5185\u7f6e\u5b57\u7b26\u4e32\u51fd\u6570:<\/h2>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n
7<\/div>\n
8<\/div>\n
9<\/div>\n
10<\/div>\n
11<\/div>\n
12<\/div>\n
13<\/div>\n
14<\/div>\n
15<\/div>\n
16<\/div>\n
17<\/div>\n
18<\/div>\n
19<\/div>\n
20<\/div>\n
21<\/div>\n
22<\/div>\n
23<\/div>\n
24<\/div>\n
25<\/div>\n
26<\/div>\n
27<\/div>\n
28<\/div>\n
29<\/div>\n<\/div>\n<\/td>\n
\n
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gsub<\/span>(<\/span>r<\/span>\uff0cs<\/span>)<\/span>\u5728\u6574\u4e2a$<\/span>0<\/span>\u4e2d\u7528s<\/span>\u66ff\u4ee3r<\/span><\/div>\n
awk<\/span> ‘gsub(\/name\/\uff0c”xingming”) {print $0}’<\/span> temp\u00a0\u00a0<\/span><\/div>\n
gsub<\/span>(<\/span>r<\/span>\uff0cs<\/span>\uff0ct<\/span>)<\/span>\u5728\u6574\u4e2at<\/span>\u4e2d\u7528s<\/span>\u66ff\u4ee3r<\/span><\/div>\n
index<\/span>(<\/span>s<\/span>\uff0ct<\/span>)<\/span>\u8fd4\u56des<\/span>\u4e2d\u5b57\u7b26\u4e32t<\/span>\u7684\u7b2c\u4e00\u4f4d\u7f6e<\/div>\n
awk<\/span> ‘BEGIN {print index(“Sunny”\uff0c”ny”)}’<\/span> temp<\/span>\u8fd4\u56de4<\/span><\/div>\n
length<\/span>(<\/span>s<\/span>)<\/span>\u8fd4\u56des<\/span>\u7684\u957f\u5ea6<\/div>\n
match<\/span>(<\/span>s<\/span>\uff0cr<\/span>)<\/span>\u6d4b\u8bd5s<\/span>\u662f\u5426\u5305\u542b\u5339\u914dr<\/span>\u7684\u5b57\u7b26\u4e32<\/div>\n
awk<\/span> ‘$1==”J.Lulu” {print match($1\uff0c”u”)}’<\/span> temp<\/span>\u8fd4\u56de4<\/span><\/div>\n
split<\/span>(<\/span>s<\/span>\uff0ca<\/span>\uff0cfs<\/span>)<\/span>\u5728fs<\/span>\u4e0a\u5c06s<\/span>\u5206\u6210\u5e8f\u5217a<\/span><\/div>\n
awk<\/span> ‘BEGIN {print split(“12#345#6789″\uff0cmyarray\uff0c”#”)”‘<\/span><\/div>\n
<\/div>\n
\u8fd4\u56de3<\/span>\uff0c\u540c\u65f6myarray<\/span>[<\/span>1<\/span>]<\/span>=<\/span>“12”<\/span>\uff0c myarray<\/span>[<\/span>2<\/span>]<\/span>=<\/span>“345”<\/span>\uff0c myarray<\/span>[<\/span>3<\/span>]<\/span>=<\/span>“6789”<\/span><\/div>\n
sprint<\/span>(<\/span>fmt<\/span>\uff0cexp<\/span>)<\/span>\u8fd4\u56de\u7ecffmt<\/span>\u683c\u5f0f\u5316\u540e\u7684exp\u00a0\u00a0<\/span><\/div>\n
sub<\/span>(<\/span>r<\/span>\uff0cs<\/span>)<\/span>\u4ece$<\/span>0<\/span>\u4e2d\u6700\u5de6\u8fb9\u6700\u957f\u7684\u5b50\u4e32\u4e2d\u7528s<\/span>\u4ee3\u66ffr<\/span>(<\/span>\u53ea\u66f4\u6362\u7b2c\u4e00\u9047\u5230\u7684\u5339\u914d\u5b57\u7b26\u4e32)<\/span><\/div>\n
substr<\/span>(<\/span>s<\/span>\uff0cp<\/span>)<\/span>\u8fd4\u56de\u5b57\u7b26\u4e32s<\/span>\u4e2d\u4ecep<\/span>\u5f00\u59cb\u7684\u540e\u7f00\u90e8\u5206<\/div>\n
substr<\/span>(<\/span>s<\/span>\uff0cp<\/span>\uff0cn<\/span>)<\/span>\u8fd4\u56de\u5b57\u7b26\u4e32s<\/span>\u4e2d\u4ecep<\/span>\u5f00\u59cb\u957f\u5ea6\u4e3an<\/span>\u7684\u540e\u7f00\u90e8\u5206<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.7. \u00a0printf \u51fd\u6570\u7684\u4f7f\u7528:<\/h2>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

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1<\/div>\n
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4<\/div>\n
5<\/div>\n<\/div>\n<\/td>\n
\n
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\u5b57\u7b26\u8f6c\u6362:<\/span> echo<\/span> “65”<\/span> |<\/span>awk<\/span> ‘{printf “%c\\n”\uff0c$0}’<\/span>\u8f93\u51faA<\/span><\/div>\n
awk<\/span> ‘BEGIN {printf “%f\\n”\uff0c999}’<\/span>\u8f93\u51fa999.000000<\/span><\/div>\n
\u683c\u5f0f\u5316\u8f93\u51fa:<\/span>awk<\/span> ‘{printf “%-15s %s\\n”\uff0c$1\uff0c$3}’<\/span> temp<\/span> \u5c06\u7b2c\u4e00\u4e2a\u57df\u5168\u90e8\u5de6\u5bf9\u9f50\u663e\u793a<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.8. \u5176\u4ed6 awk \u7528\u6cd5:<\/h2>\n

\u5411\u4e00\u884c awk \u547d\u4ee4\u4f20\u503c:<\/p>\n

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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n
2<\/div>\n<\/div>\n<\/td>\n
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awk<\/span> ‘{if ($5<AGE) print $0}’<\/span> AGE<\/span>=<\/span>10<\/span> temp\u00a0\u00a0<\/span><\/div>\n
who<\/span> |<\/span> awk<\/span> ‘{if ($1==user) print $1 ” are in ” $2 ‘<\/span> user<\/span>=<\/span>$LOGNAME<\/span> \u4f7f\u7528\u73af\u5883\u53d8\u91cf<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

awk \u811a\u672c\u547d\u4ee4:<\/p>\n

\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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7<\/div>\n
8<\/div>\n
9<\/div>\n
10<\/div>\n
11<\/div>\n
12<\/div>\n
13<\/div>\n
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15<\/div>\n
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17<\/div>\n
18<\/div>\n
19<\/div>\n
20<\/div>\n
21<\/div>\n
22<\/div>\n<\/div>\n<\/td>\n
\n
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!<\/span>\/<\/span>bin<\/span>\/<\/span>awk<\/span> –<\/span>f<\/span><\/div>\n
# all comment lines must start with a hash ‘#’\u00a0\u00a0<\/span><\/div>\n
# name: student_tot.awk\u00a0\u00a0<\/span><\/div>\n
# to call: student_tot.awk grade.txt\u00a0\u00a0<\/span><\/div>\n
# prints total and average of club student points\u00a0\u00a0<\/span><\/div>\n
# print a header first\u00a0\u00a0<\/span><\/div>\n
BEGIN<\/span><\/div>\n
{<\/span><\/div>\n
print<\/span> “Student\u00a0\u00a0\u00a0\u00a0Date\u00a0\u00a0 Member No.\u00a0\u00a0Grade\u00a0\u00a0Age\u00a0\u00a0Points\u00a0\u00a0Max”<\/span><\/div>\n
print<\/span> “Name\u00a0\u00a0Joined Gained\u00a0\u00a0Point Available”<\/span><\/div>\n
print<\/span>“=========================================================”<\/span><\/div>\n
}<\/span><\/div>\n
# let’s add the scores of points gained\u00a0\u00a0<\/span><\/div>\n
(<\/span>tot<\/span>+=<\/span>$<\/span>6<\/span>)<\/span>;<\/span><\/div>\n
# finished processing now let’s print the total and average point\u00a0\u00a0<\/span><\/div>\n
END<\/span><\/div>\n
{<\/span><\/div>\n
print<\/span> “Club student total points :”<\/span> tot\u00a0\u00a0<\/span><\/div>\n
print<\/span> “Average Club Student points :”<\/span> tot<\/span>\/<\/span>N<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.9. awk \u6570\u7ec4:<\/h2>\n

awk \u7684\u5faa\u73af\u57fa\u672c\u7ed3\u6784<\/p>\n

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<\/div>\n<\/div>\n
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Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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7<\/div>\n<\/div>\n<\/td>\n
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For<\/span> (<\/span>element <\/span>in<\/span> array<\/span>)<\/span> print <\/span>array<\/span>[<\/span>element<\/span>]<\/span><\/div>\n
awk<\/span> ‘BEGIN<\/span> {<\/span><\/div>\n
record<\/span>=<\/span>“123#456#789”<\/span>;<\/span>split<\/span>(<\/span>record<\/span>\uff0cmyarray<\/span>\uff0c“#”<\/span>)<\/span><\/div>\n
}<\/span><\/div>\n
END<\/span> {<\/span><\/div>\n
for<\/span> (<\/span>i<\/span> in<\/span> myarray<\/span>)<\/span> {<\/span>print <\/span>myarray<\/span>[<\/span>i<\/span>]<\/span>}<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

3.0\u00a0 awk \u4e2d\u81ea\u5b9a\u4e49\u8bed\u53e5<\/h2>\n

3.1. \u6761\u4ef6\u5224\u65ad\u8bed\u53e5(if)<\/h2>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n
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<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
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1<\/div>\n
2<\/div>\n
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5<\/div>\n<\/div>\n<\/td>\n
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if<\/span>(<\/span>\u8868\u8fbe\u5f0f)<\/span> #\u00a0\u00a0<\/span><\/div>\n
if<\/span> (<\/span> Variable <\/span>in<\/span> Array<\/span> )<\/span><\/div>\n
\u8bed\u53e51<\/span><\/div>\n
else<\/span><\/div>\n
\u8bed\u53e52<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u683c\u5f0f\u4e2d”\u8bed\u53e5 1″\u53ef\u4ee5\u662f\u591a\u4e2a\u8bed\u53e5\uff0c\u5982\u679c\u4f60\u4e3a\u4e86\u65b9\u4fbf Unix awk \u5224\u65ad\u4e5f\u65b9\u4fbf\u4f60\u81ea\u5df2\u9605\u8bfb\uff0c\u4f60\u6700\u597d\u5c06\u591a\u4e2a\u8bed\u53e5\u7528{}\u62ec\u8d77\u6765\u3002Unix awk \u5206\u679d\u7ed3\u6784\u5141\u8bb8\u5d4c\u5957\uff0c\u5176\u683c\u5f0f\u4e3a\uff1a<\/p>\n

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<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n<\/div>\n<\/td>\n
\n
\n
if<\/span>(<\/span>\u8868\u8fbe\u5f0f)<\/span><\/div>\n
{<\/span>\u8bed\u53e51<\/span>}<\/span><\/div>\n
else<\/span> if<\/span>(<\/span>\u8868\u8fbe\u5f0f)<\/span><\/div>\n
{<\/span>\u8bed\u53e52<\/span>}<\/span><\/div>\n
else<\/span><\/div>\n
{<\/span>\u8bed\u53e53<\/span>}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

 <\/p>\n

\n
\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n
7<\/div>\n
8<\/div>\n
9<\/div>\n
10<\/div>\n
11<\/div>\n
12<\/div>\n
13<\/div>\n
14<\/div>\n
15<\/div>\n
16<\/div>\n<\/div>\n<\/td>\n
\n
\n
awk<\/span> ‘BEGIN<\/span>{<\/span><\/div>\n
test<\/span>=<\/span>100<\/span>;<\/span><\/div>\n
if<\/span>(<\/span>test<\/span>><\/span>90<\/span>)<\/span><\/div>\n
{<\/span><\/div>\n
print<\/span> “very good”<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
else<\/span> if<\/span>(<\/span>test<\/span>><\/span>60<\/span>)<\/span><\/div>\n
{<\/span><\/div>\n
print<\/span> “good”<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
else<\/span><\/div>\n
{<\/span><\/div>\n
print<\/span> “no pass”<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
}<\/span>‘<\/div>\n
very <\/span>good<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u6bcf\u6761\u547d\u4ee4\u8bed\u53e5\u540e\u9762\u53ef\u4ee5\u7528\u201c\uff1b\u201d\u53f7\u7ed3\u5c3e\u3002<\/p>\n

3.2. \u5faa\u73af\u8bed\u53e5(while,for,do)<\/h2>\n

1.while \u8bed\u53e5<\/strong><\/h5>\n

\u683c\u5f0f\uff1a<\/strong><\/p>\n

while(\u8868\u8fbe\u5f0f)<\/p>\n

{\u8bed\u53e5}<\/p>\n

\u4f8b\u5b50\uff1a<\/strong><\/h6>\n
\n
\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n
7<\/div>\n
8<\/div>\n
9<\/div>\n
10<\/div>\n
11<\/div>\n<\/div>\n<\/td>\n
\n
\n
[<\/span>chengmo<\/span>@<\/span>localhost <\/span>nginx<\/span>]<\/span># awk ‘BEGIN{\u00a0\u00a0<\/span><\/div>\n
test<\/span>=<\/span>100<\/span>;<\/span><\/div>\n
total<\/span>=<\/span>0<\/span>;<\/span><\/div>\n
while<\/span>(<\/span>i<\/span><=<\/span>test<\/span>)<\/span><\/div>\n
{<\/span><\/div>\n
total<\/span>+=<\/span>i<\/span>;<\/span><\/div>\n
i<\/span>++<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
print <\/span>total<\/span>;<\/span><\/div>\n
}<\/span>‘<\/div>\n
5050<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
2.for \u5faa\u73af<\/strong><\/h5>\n

for \u5faa\u73af\u6709\u4e24\u79cd\u683c\u5f0f\uff1a<\/strong><\/p>\n

\u683c\u5f0f 1\uff1a<\/strong><\/p>\n

for(\u53d8\u91cf in \u6570\u7ec4)<\/p>\n

{\u8bed\u53e5}<\/p>\n

 <\/p>\n

\u4f8b\u5b50\uff1a<\/strong><\/p>\n

\n
\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n
7<\/div>\n
8<\/div>\n
9<\/div>\n
10<\/div>\n
11<\/div>\n
12<\/div>\n
13<\/div>\n
14<\/div>\n
15<\/div>\n<\/div>\n<\/td>\n
\n
\n
[<\/span>chengmo<\/span>@<\/span>localhost <\/span>nginx<\/span>]<\/span># awk ‘BEGIN{\u00a0\u00a0<\/span><\/div>\n
for<\/span>(<\/span>k<\/span> in<\/span> ENVIRON<\/span>)<\/span><\/div>\n
{<\/span><\/div>\n
print<\/span> k<\/span>“=”<\/span>ENVIRON<\/span>[<\/span>k<\/span>]<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
}<\/span>‘<\/div>\n
AWKPATH<\/span>=<\/span>.<\/span>:<\/span>\/<\/span>usr<\/span>\/<\/span>share<\/span>\/<\/span>awk<\/span><\/div>\n
OLDPWD<\/span>=<\/span>\/<\/span>home<\/span>\/<\/span>web97\u00a0\u00a0<\/span><\/div>\n
SSH_ASKPASS<\/span>=<\/span>\/<\/span>usr<\/span>\/<\/span>libexec<\/span>\/<\/span>openssh<\/span>\/<\/span>gnome<\/span>–<\/span>ssh<\/span>–<\/span>askpass\u00a0\u00a0<\/span><\/div>\n
SELINUX_LEVEL_REQUESTED<\/span>=<\/span><\/div>\n
SELINUX_ROLE_REQUESTED<\/span>=<\/span><\/div>\n
LANG<\/span>=<\/span>zh_CN<\/span>.GB2312<\/span><\/div>\n
\u3002\u3002\u3002\u3002\u3002\u3002<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u8bf4\u660e\uff1aENVIRON \u662f awk \u5e38\u91cf\uff0c\u662f\u5b50\u5178\u578b\u6570\u7ec4\u3002<\/p>\n

\u683c\u5f0f 2\uff1a<\/strong><\/p>\n

for(\u53d8\u91cf;\u6761\u4ef6;\u8868\u8fbe\u5f0f)<\/p>\n

{\u8bed\u53e5}<\/p>\n

 <\/p>\n

\u4f8b\u5b50\uff1a<\/strong><\/p>\n

\n
\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n
7<\/div>\n
8<\/div>\n
9<\/div>\n
10<\/div>\n<\/div>\n<\/td>\n
\n
\n
[<\/span>chengmo<\/span>@<\/span>localhost <\/span>nginx<\/span>]<\/span># awk ‘BEGIN{\u00a0\u00a0<\/span><\/div>\n
total<\/span>=<\/span>0<\/span>;<\/span><\/div>\n
for<\/span>(<\/span>i<\/span>=<\/span>0<\/span>;<\/span>i<\/span><=<\/span>100<\/span>;<\/span>i<\/span>++<\/span>)<\/span><\/div>\n
{<\/span><\/div>\n
total<\/span>+=<\/span>i<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
print <\/span>total<\/span>;<\/span><\/div>\n
}<\/span>‘<\/div>\n
5050<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
3.do \u5faa\u73af<\/strong><\/h5>\n

\u683c\u5f0f\uff1a<\/strong><\/p>\n

do<\/p>\n

{\u8bed\u53e5}while(\u6761\u4ef6)<\/p>\n

 <\/p>\n

\u4f8b\u5b50\uff1a<\/strong><\/p>\n

\n
\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n

Shell<\/span><\/p>\n<\/div>\n<\/div>\n

<\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n
7<\/div>\n
8<\/div>\n
9<\/div>\n
10<\/div>\n
11<\/div>\n<\/div>\n<\/td>\n
\n
\n
[<\/span>chengmo<\/span>@<\/span>localhost <\/span>nginx<\/span>]<\/span># awk ‘BEGIN{\u00a0\u00a0<\/span><\/div>\n
total<\/span>=<\/span>0<\/span>;<\/span><\/div>\n
i<\/span>=<\/span>0<\/span>;<\/span><\/div>\n
do<\/span><\/div>\n
{<\/span><\/div>\n
total<\/span>+=<\/span>i<\/span>;<\/span><\/div>\n
i<\/span>++<\/span>;<\/span><\/div>\n
}<\/span>while<\/span>(<\/span>i<\/span><=<\/span>100<\/span>)<\/span><\/div>\n
print <\/span>total<\/span>;<\/span><\/div>\n
}<\/span>‘<\/div>\n
5050<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u4ee5\u4e0a\u4e3a awk \u6d41\u7a0b\u63a7\u5236\u8bed\u53e5\uff0c\u4ece\u8bed\u6cd5\u4e0a\u9762\u5927\u5bb6\u53ef\u4ee5\u770b\u5230\uff0c\u4e0e c \u8bed\u8a00\u662f\u4e00\u6837\u7684\u3002\u6709\u4e86\u8fd9\u4e9b\u8bed\u53e5\uff0c\u5176\u5b9e\u5f88\u591a shell \u7a0b\u5e8f\u90fd\u53ef\u4ee5\u4ea4\u7ed9 awk\uff0c\u800c\u4e14\u6027\u80fd\u662f\u975e\u5e38\u5feb\u7684\u3002<\/p>\n\n\n\n\n\n\n
break<\/td>\n\u5f53\u00a0break\u00a0\u8bed\u53e5\u7528\u4e8e\u00a0while\u00a0\u6216\u00a0for\u00a0\u8bed\u53e5\u65f6\uff0c\u5bfc\u81f4\u9000\u51fa\u7a0b\u5e8f\u5faa\u73af\u3002<\/td>\n<\/tr>\n
continue<\/td>\n\u5f53\u00a0continue\u00a0\u8bed\u53e5\u7528\u4e8e\u00a0while\u00a0\u6216\u00a0for\u00a0\u8bed\u53e5\u65f6\uff0c\u4f7f\u7a0b\u5e8f\u5faa\u73af\u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8fed\u4ee3\u3002<\/td>\n<\/tr>\n
next<\/td>\n\u80fd\u80fd\u591f\u5bfc\u81f4\u8bfb\u5165\u4e0b\u4e00\u4e2a\u8f93\u5165\u884c\uff0c\u5e76\u8fd4\u56de\u5230\u811a\u672c\u7684\u9876\u90e8\u3002\u8fd9\u53ef\u4ee5\u907f\u514d\u5bf9\u5f53\u524d\u8f93\u5165\u884c\u6267\u884c\u5176\u4ed6\u7684\u64cd\u4f5c\u8fc7\u7a0b\u3002<\/td>\n<\/tr>\n
exit<\/td>\n\u8bed\u53e5\u4f7f\u4e3b\u8f93\u5165\u5faa\u73af\u9000\u51fa\u5e76\u5c06\u63a7\u5236\u8f6c\u79fb\u5230 END,\u5982\u679c END \u5b58\u5728\u7684\u8bdd\u3002\u5982\u679c\u6ca1\u6709\u5b9a\u4e49 END \u89c4\u5219\uff0c\u6216\u5728 END \u4e2d\u5e94\u7528 exit \u8bed\u53e5\uff0c\u5219\u7ec8\u6b62\u811a\u672c\u7684\u6267\u884c\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\u539f\u6587\u5730\u5740   \u7b80\u5355\u4f7f\u7528\uff1a aw<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[117],"class_list":["post-3360","post","type-post","status-publish","format-standard","hentry","tag-01-linux"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/3360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=3360"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/3360\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=3360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=3360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=3360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}