{"id":419,"date":"2021-07-28T17:57:38","date_gmt":"2021-07-28T09:57:38","guid":{"rendered":"https:\/\/egonlin.com\/?p=419"},"modified":"2022-04-26T11:45:18","modified_gmt":"2022-04-26T03:45:18","slug":"%e7%ac%ac%e4%b8%89%e8%8a%82%ef%bc%9aawk%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=419","title":{"rendered":"\u7b2c\u4e09\u8282\uff1aawk\u547d\u4ee4"},"content":{"rendered":"<h1>\u4e09\u5251\u5ba2\u4e4bawk\u547d\u4ee4<\/h1>\n<h2>\u4e00 awk\u7b80\u4ecb<\/h2>\n<p>\u200b   awk\u547d\u540d\u6e90\u81ea\u4e8e\u5b83\u7684\u4e09\u5927\u4f5c\u8005\u540d\u5b57\u7684\u9996\u5b57\u6bcd\uff0c\u5206\u522b\u662fAlfred Aho\u3001Brian Kernighan\u3001Peter Weinberger\u3002\uff08gawk\u662fawk\u7684GNU\u7248\u672c\uff0c\u5b83\u63d0\u4f9b\u4e86Bell\u5b9e\u9a8c\u5ba4\u548cGNU\u7684\u4e00\u4e9b\u6269\u5c55\uff09\u3002<\/p>\n<p>\u200b   awk \u662f\u4e00\u79cd\u7f16\u7a0b\u8bed\u8a00\uff0c\u7528\u4e8e\u5728linux\/unix\u4e0b\u5bf9\u6587\u672c\u548c\u6570\u636e\u8fdb\u884c\u5904\u7406\u3002\u6570\u636e\u53ef\u4ee5\u6765\u81ea\u6807\u51c6\u8f93\u5165\u3001\u4e00\u4e2a<br \/>\n\u6216\u591a\u4e2a\u6587\u4ef6\uff0c\u6216\u5176\u5b83\u547d\u4ee4\u7684\u8f93\u51fa\u3002\u5b83\u652f\u6301\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u548c\u52a8\u6001\u6b63\u5219\u8868\u8fbe\u5f0f\u7b49\u5148\u8fdb\u529f\u80fd\uff0c\u662flinux\/unix<br \/>\n\u4e0b\u7684\u4e00\u4e2a\u5f3a\u5927\u7f16\u7a0b\u5de5\u5177\u3002\u5b83\u5728\u547d\u4ee4\u884c\u4e2d\u4f7f\u7528\uff0c\u4f46\u66f4\u591a\u662f\u4f5c\u4e3a\u811a\u672c\u6765\u4f7f\u7528\u3002<br \/>\n\u200b   awk\u7684\u5904\u7406\u6587\u672c\u548c\u6570\u636e\u7684\u65b9\u5f0f\u662f\u8fd9\u6837\u7684\uff0c\u5b83\u9010\u884c\u626b\u63cf\u6587\u4ef6\uff0c\u4ece\u7b2c\u4e00\u884c\u5230\u6700\u540e\u4e00\u884c\uff0c\u5bfb\u627e\u5339\u914d\u7684\u7279\u5b9a<br \/>\n\u6a21\u5f0f\u7684\u884c\uff0c\u5e76\u5728\u8fd9\u4e9b\u884c\u4e0a\u8fdb\u884c\u4f60\u60f3\u8981\u7684\u64cd\u4f5c\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u5904\u7406\u52a8\u4f5c\uff0c\u5219\u628a\u5339\u914d\u7684\u884c\u663e\u793a\u5230\u6807\u51c6\u8f93\u51fa(<br \/>\n\u5c4f\u5e55)\uff0c\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u6a21\u5f0f\uff0c\u5219\u6240\u6709\u88ab\u64cd\u4f5c\u6240\u6307\u5b9a\u7684\u884c\u90fd\u88ab\u5904\u7406<\/p>\n<p>\u200b   awk\u7684\u4e24\u79cd\u8bed\u6cd5\u683c\u5f0f<\/p>\n<pre><code class=\"language-python\">awk [options] &#039;commands&#039; filename\nawk [options] -f awk-script-file filename<\/code><\/pre>\n<p>\u200b   awk\u9009\u9879options<\/p>\n<pre><code class=\"language-python\">-F      \u5b9a\u4e49\u5b57\u6bb5\u5206\u9694\u7b26\uff0c\u9ed8\u8ba4\u7684\u5206\u9694\u7b26\u662f\u7a7a\u683c\u6216\u5236\u8868\u7b26(tab)<\/code><\/pre>\n<p>\u200b   awk\u7684\u547d\u4ee4commands\u603b\u5171\u7531\u4e09\u90e8\u5206\u7ec4\u6210<\/p>\n<pre><code class=\"language-python\">BEGIN{}                 {}                 END{}\n\u8bfb\u6240\u6709\u884c\u4e4b\u524d\u505a\u7684\u4e8b\u60c5       \u8bfb\u4e00\u884c\u5904\u7406\u4e00\u884c       \u6240\u6709\u8bfb\u5b8c\u4e4b\u540e\u8981\u505a\u7684\u4e8b\u60c5<\/code><\/pre>\n<p>\u200b   \u53ef\u4ee5\u7701\u7565BEGIN{} \u548cEND{}\uff0c\u53ea\u8fdb\u884c{}\u884c\u5904\u7406\uff0c\u5e76\u4e14{}\u884c\u5904\u7406\u524d\u53ef\u4ee5\u52a0\u5339\u914d\uff0c\u5339\u914d\u6210\u529f\u540e\u518d\u5904\u7406<\/p>\n<pre><code class=\"language-python\">awk &#039;pattern&#039; filename                \u793a\u4f8b\uff1aawk -F: &#039;\/root\/&#039; \/etc\/passwd       \nawk &#039;{action}&#039; filename               \u793a\u4f8b\uff1aawk -F: &#039;{print $1}&#039; \/etc\/passwd           \nawk &#039;pattern{action}&#039; filename        \u793a\u4f8b\uff1aawk -F: &#039;\/root\/{print $1,$3}&#039; \/etc\/passwd      \n                                \u793a\u4f8b\uff1aawk &#039;BEGIN{FS=&quot;:&quot;} \/root\/{print $1,$3}&#039; \/etc\/passwd\n\u5176\u4ed6\u547d\u4ee4 |awk &#039;pattern&#039; \n\u5176\u4ed6\u547d\u4ee4 |awk &#039;{action}&#039;          \n\u5176\u4ed6\u547d\u4ee4 |awk &#039;pattern{action}&#039;   \n\n# \u5339\u914dpattern\u53ef\u4ee5\u662f\uff1a\/\u6b63\u5219\u8868\u8fbe\u5f0f\/\u4e5f\u53ef\u4ee5\u662f\u6761\u4ef6\uff0c\u5982\u4e0b\n\u793a\u4f8b\uff1adf -P |awk &#039;$4 &gt; 999999{print $0}&#039;  # \u4e5f\u53ef\u4ee5\u7701\u7565{print $0}\n\n\u6a21\u5f0fpattern\u8fd8\u53ef\u4ee5\u662f\u5176\u4ed6\uff0c\u8be6\u89e3\u7b2c\u4e94\u7ae0\u8282<\/code><\/pre>\n<h2>\u4e8c awk\u5de5\u4f5c\u539f\u7406<\/h2>\n<pre><code class=\"language-python\">awk -F: &#039;{print $1,$3}&#039; \/etc\/passwd\n\n(1)awk\u4f1a\u63a5\u6536\u4e00\u884c\u4f5c\u4e3a\u8f93\u5165\uff0c\u5e76\u5c06\u8fd9\u4e00\u884c\u8d4b\u7ed9awk\u7684\u5185\u90e8\u53d8\u91cf$0\uff0c\u6bcf\u4e00\u884c\u4e5f\u53ef\u79f0\u4e3a\u4e00\u4e2a\u8bb0\u5f55\uff0c\u884c\u7684\u8fb9\u754c\u662f\u4ee5\u6362\u884c\u7b26\u4f5c\u4e3a\u7ed3\u675f\n\n(2)\u7136\u540e\uff0c\u521a\u521a\u8bfb\u5165\u7684\u884c\u88ab\u4ee5:\u4e3a\u5206\u9694\u7b26\u5206\u89e3\u6210\u82e5\u5e72\u5b57\u6bb5\uff08\u6216\u57df\uff09\uff0c\u6bcf\u4e2a\u5b57\u6bb5\u5b58\u50a8\u5728\u5df2\u7f16\u53f7\u7684\u53d8\u91cf\u4e2d\uff0c\u7f16\u53f7\u4ece$1\u5f00\u59cb\uff0c\u6700\u591a\u8fbe100\u4e2a\u5b57\u6bb5\n\u6ce8\u610f\uff1a\u5982\u679c\u672a\u6307\u5b9a\u884c\u5206\u9694\u7b26\uff0cawk\u5c06\u4f7f\u7528\u5185\u7f6e\u53d8\u91cfFS\u7684\u503c\u4f5c\u4e3a\u9ed8\u8ba4\u7684\u884c\u5206\u9694\u7b26\uff0cFS\u9ed8\u8ba4\u503c\u4e3a\u7a7a\u683c\n\n(3)\u4f7f\u7528print\u51fd\u6570\u6253\u5370\uff0c\u5982\u679c$1$3\u4e4b\u95f4\u6ca1\u6709\u9017\u53f7\uff0c\u5b83\u4fe9\u5728\u8f93\u51fa\u65f6\u5c06\u8d34\u5728\u4e00\u8d77\uff0c\u5e94\u8be5\u5728$1,$3\u4e4b\u95f4\u52a0\u9017\u53f7\uff0c\u8be5\u9017\u53f7\u4e0eawk\u7684\u5185\u7f6e\u53d8\u91cfOFS\u4fdd\u6301\u4e00\u81f4\uff0cOFS\u9ed8\u8ba4\u4e3a\u7a7a\u683c\uff0c\u4e8e\u662f\u4ee5\u7a7a\u683c\u4e3a\u5206\u9694\u7b26\u8f93\u51fa$1\u548c$3\n\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a\uff1aawk -F: &#039;BEGIN{OFS=&quot;-&quot;}{print $1,$3}&#039; \/etc\/passwd\n\n(4)\u8f93\u51fa\u4e4b\u540e\uff0c\u5c06\u4ece\u6587\u4ef6\u4e2d\u83b7\u53d6\u53e6\u4e00\u884c\uff0c\u7136\u540e\u8986\u76d6\u7ed9$0\uff0c\u7ee7\u7eed(2)\u7684\u6b65\u9aa4\u5c06\u8be5\u884c\u5185\u5bb9\u5206\u9694\u6210\u5b57\u6bb5\u3002\u3002\u3002\u7ee7\u7eed(3)\u7684\u6b65\u9aa4\n\u8be5\u8fc7\u7a0b\u4e00\u76f4\u6301\u7eed\u5230\u6240\u6709\u884c\u5904\u7406\u5b8c\u6bd5<\/code><\/pre>\n<h2>\u4e09 \u8bb0\u5f55\u4e0e\u5b57\u6bb5\u76f8\u5173\u5185\u90e8\u53d8\u91cf<\/h2>\n<pre><code class=\"language-python\">$0\uff1a \u4fdd\u5b58\u5f53\u524d\u884c\u7684\u5185\u5bb9                # awk -F: &#039;{print $0}&#039; \/etc\/passwd\nNR\uff1a \u8bb0\u5f55\u53f7\uff0c\u6bcf\u5904\u7406\u5b8c\u4e00\u6761\u8bb0\u5f55\uff0cNR\u503c\u52a01  # awk -F: &#039;{print NR, $0}&#039; \/etc\/passwd\nNF\uff1a \u4fdd\u5b58\u8bb0\u5f55\u7684\u5b57\u6bb5\u6570\uff0c$1,$2...$100   # awk -F: &#039;{print $0,NF}&#039; \/etc\/passwd\nFS\uff1a \u8f93\u5165\u5b57\u6bb5\u5206\u9694\u7b26\uff0c\u9ed8\u8ba4\u7a7a\u683c        # awk -F: &#039;\/alice\/{print $1, $3}&#039; \/etc\/passwd\n                                # awk -F&#039;[ :\\t]&#039; &#039;{print $1,$2,$3}&#039; \/etc\/passwd \n                                # awk &#039;BEGIN{FS=&quot;:&quot;} {print $1,$3}&#039; \/etc\/passwd\nOFS\uff1a\u8f93\u51fa\u5b57\u6bb5\u5206\u9694\u7b26     # awk -F: &#039;\/root\/{print $1,$2,$3,$4}&#039; \/etc\/passwd\n                    # awk -F: &#039;BEGIN{OFS=&quot;+++&quot;} \/^root\/{print $1,$2,$3,$4}&#039; \/etc\/passwd\n                   # awk  &#039;BEGIN{OFS=&quot;-&quot;;FS=&quot;:&quot;}\/root\/{print NR,$0,NF}&#039; \/etc\/passwd<\/code><\/pre>\n<h2>\u56db \u683c\u5f0f\u5316\u8f93\u51fa<\/h2>\n<pre><code class=\"language-python\">================print\u51fd\u6570===================\n[root@egon ~]# date | awk &#039;{print &quot;\u6708:&quot;,$2,&quot;\\n\u5e74:&quot;,$1}&#039;\n\u6708: 09\u6708 \n\u5e74: 2020\u5e74\n[root@egon ~]# \n[root@egon ~]# awk -F: &#039;{print &quot;\u7528\u6237\u540d:&quot;,$1,&quot;\u7528\u6237id:&quot;,$3}&#039; \/etc\/passwd\n\n================printf\u51fd\u6570===================\n[root@egon ~]# awk -F: &#039;{printf &quot;\u7528\u6237\u540d:%s \u7528\u6237id:%s\\n&quot;,$1,$3}&#039; \/etc\/passwd\n[root@egon ~]# awk -F: &#039;{printf &quot;|%-15s| %-10s| %-15s|\\n&quot;, $1,$2,$3}&#039; \/etc\/passwd\n\n%s \u5b57\u7b26\u7c7b\u578b\n%d \u6570\u503c\u7c7b\u578b\n\u536015\u683c\u7684\u5b57\u7b26\u4e32\n- \u8868\u793a\u5de6\u5bf9\u9f50\uff0c\u9ed8\u8ba4\u662f\u53f3\u5bf9\u9f50\nprintf\u9ed8\u8ba4\u4e0d\u4f1a\u5728\u884c\u5c3e\u81ea\u52a8\u6362\u884c\uff0c\u52a0\\n<\/code><\/pre>\n<h2>\u4e94 \u6a21\u5f0fpattern\u4e0e\u52a8\u4f5caction<\/h2>\n<p>awk &#8216;pattern{action}&#8217; filename<\/p>\n<p>\u6a21\u5f0fpattern\u53ef\u4ee5\u662f<\/p>\n<ul>\n<li>\n<p>\u6b63\u5219\u8868\u8fbe\u5f0f<\/p>\n<pre><code class=\"language-python\"># \u5339\u914d\u6574\u884c\nawk -F: '\/egon\/{print $1,$3}' \/etc\/passwd    \nawk '\/^root\/'  \/etc\/passwd\n\n# \u5339\u914d\u4e00\u884c\u7684\u67d0\u4e2a\u5b57\u6bb5\n# awk '$0 ~ \/^root\/'  \/etc\/passwd\n# awk '$1 ~ \/^root\/'  \/etc\/passwd\n# awk '$7 !~ \/bash$\/'  \/etc\/passwd<\/code><\/pre>\n<\/li>\n<li>\n<p>\u6bd4\u8f83\u8868\u8fbe\u5f0f<\/p>\n<pre><code class=\"language-python\">\u6bd4\u8f83\u8868\u8fbe\u5f0f\u6307\u7684\u662f\u4f7f\u7528\u5173\u7cfb\u8fd0\u7b97\u7b26\u6765\u6bd4\u8f83\u6570\u5b57\u4ee5\u53ca\u5b57\u7b26\u4e32\uff0c\u53ea\u6709\u5f53\u6761\u4ef6\u4e3a\u771f\uff0c\u624d\u6267\u884c\u6307\u5b9a\u7684\u52a8\u4f5c\n\n\u5173\u7cfb\u8fd0\u7b97\u7b26\n\u8fd0\u7b97\u7b26             \u542b\u4e49                        \u793a\u4f8b\n<             \u5c0f\u4e8e                        x<y\n<=                \u5c0f\u4e8e\u6216\u7b49\u4e8e                   x<=y\n==                \u7b49\u4e8e                        x==y\n!=                \u4e0d\u7b49\u4e8e                      x!=y\n>=                \u5927\u4e8e\u7b49\u4e8e                    x>=y\n>             \u5927\u4e8e                        x>y\n~             \u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d                x~\/y\/\n!~                \u6b63\u5219\u8868\u8fbe\u5f0f\u4e0d\u5339\u914d              x!~\/y\/\n\n\u793a\u4f8b\uff1a\n# awk -F: '$3 == 0' \/etc\/passwd\n# awk -F: '$3 < 10' \/etc\/passwd\n# awk -F: '$7 == \"\/bin\/bash\"' \/etc\/passwd\n# awk -F: '$1 == \"root\" ' \/etc\/passwd<\/code><\/pre>\n<\/li>\n<li>\n<p>\u6761\u4ef6\u8868\u8fbe\u5f0f<\/p>\n<pre><code class=\"language-python\"># awk -F: '{if($3>300) {print $0}}' \/etc\/passwd\n# awk -F: '{if($3>300) {print $3} else{print $1}}' \/etc\/passwd\n\n# awk -F: '{if($3>300) {max=$3;print max} else{max=$1;print max}}' \/etc\/passwd\n# awk -F: '{max=($3>300) ? $3 : $1; print max}' \/etc\/passwd\n\n# awk -F: '{if($3>$4) {max=$3;print max} else{max=$4; print max}}' \/etc\/passwd\n# awk -F: '{max=($3 > $4) ? $3: $4; print max}' \/etc\/passwd   \n\u76f8\u5f53\u4e8e\uff1a\nif ($3 > $4)\nmax=$3\nelse\nmax=$4<\/code><\/pre>\n<\/li>\n<li>\n<p>\u7b97\u6570\u8fd0\u7b97<\/p>\n<pre><code class=\"language-python\">+ - * \/ %(\u6a21) ^(\u5e422^3)\n\u53ef\u4ee5\u5728\u6a21\u5f0f\u4e2d\u6267\u884c\u8ba1\u7b97\uff0cawk\u90fd\u5c06\u6309\u6d6e\u70b9\u6570\u65b9\u5f0f\u6267\u884c\u7b97\u672f\u8fd0\u7b97\n\n# awk -F: '$3 * 10 > 500' \/etc\/passwd<\/code><\/pre>\n<\/li>\n<li>\n<p>\u903b\u8f91\u8fd0\u7b97\u548c\u590d\u5408\u6a21\u5f0f<\/p>\n<pre><code class=\"language-python\">&&            \u903b\u8f91\u4e0e     a&&b\n||            \u903b\u8f91\u6216     a||b\n!         \u903b\u8f91\u975e     !a\n\n\u793a\u4f8b\uff1a\n# awk '$2 > 5 && $2 <= 15' filename\n# awk '$3 == 100 || $4 > 50' filename\n# awk '!($2 < 100 &#038;&#038; $3 < 20)' filename   <\/code><\/pre>\n<\/li>\n<li>\n<p>\u8303\u56f4\u6a21\u5f0f<\/p>\n<pre><code class=\"language-python\"># \u6b63\u5219\nawk '\/root\/,\/egon\/' filename\n\n\u8bf4\u660e\uff1a\nawk\u5c06\u663e\u793a\u4eceroot\u9996\u6b21\u51fa\u73b0\u7684\u884c\u5230egon\u9996\u6b21\u51fa\u73b0\u7684\u884c\u8fd9\u4e2a\u8303\u56f4\u5185\u7684\u6240\u6709\u884c\uff0c\u5305\u62ec\u4e24\u4e2a\u8fb9\u754c\u5728\u5185\u3002\u5982\u679c\u6ca1\u6709\u627e\u5230egon\uff0cawk\u5c06\u7ee7\u7eed\u6253\u5370\u5404\u884c\u76f4\u81f3\u6587\u4ef6\u672b\u5c3e\u3002\n\n\u5982\u679c\u6253\u5370\u5b8croot\u5230egon\u7684\u5185\u5bb9\u4e4b\u540e\uff0c\u53c8\u51fa\u73b0\u4e86root\uff0c awk\u5c31\u53c8\u4e00\u6b21\u5f00\u59cb\u663e\u793a\u884c\uff0c\u76f4\u81f3\u627e\u5230\u4e0b\u4e00\u4e2aegon,\u82e5\u6ca1\u6709\u4e0b\u4e00\u4e2aegon\u5c31\u4f1a\u4e00\u76f4\u5339\u914d\u6210\u529f\u5230\u6587\u4ef6\u672b\u5c3e\u3002\n\n[root@aliyun ~]# cat a.txt\n1111root\n2222root22222\negon123123123123\n4444\n5555\n6666\nroot7777\n1asf\nasdfasdf\negon\n7788\n[root@aliyun ~]# awk '\/root\/,\/egon\/{print NR,$0}' a.txt\n1 1111root\n2 2222root22222\n3 egon123123123123\n7 root7777\n8 1asf\n9 asdfasdf\n10 egon\n[root@aliyun ~]# \n\n# \u884c\u53f7\nawk -F: 'NR>=1 && NR <=3{print $1}' test.txt <\/code><\/pre>\n<\/li>\n<\/ul>\n<h2>\u516d awk\u793a\u4f8b<\/h2>\n<pre><code class=\"language-python\"># awk &#039;\/west\/&#039; datafile\n# awk &#039;\/^north\/&#039; datafile\n# awk &#039;\/^(no|so)\/&#039; datafile\n# awk &#039;{print $3,$2}&#039; datafile\n# awk &#039;{print $3 $2}&#039; datafile\n# awk &#039;{print $0}&#039; datafile\n# awk &#039;{print &quot;Number of fields: &quot;NF}&#039; datafile\n# awk &#039;\/northeast\/{print $3,$2}&#039; datafile\n# awk &#039;\/E\/&#039; datafile\n# awk &#039;\/^[ns]\/{print $1}&#039; datafile\n# awk &#039;$5 ~ \/\\.[7-9]+\/&#039; datafile\n# awk &#039;$2 !~ \/E\/{print $1,$2}&#039; datafile\n# awk &#039;$3 ~ \/^Joel\/{print $3 &quot; is a nice guy.&quot;}&#039; datafile\n# awk &#039;$8 ~ \/[0-9][0-9]$\/{print $8}&#039; datafile\n# awk &#039;$4 ~ \/Chin$\/{print &quot;The price is $&quot; $8 &quot;.&quot;}&#039; datafile\n# awk &#039;\/Tj\/{print $0}&#039; datafile\n# awk &#039;{print $1}&#039; datafile2      \n# awk -F: &#039;{print $1}&#039; datafile2\n# awk &#039;{print &quot;Number of fields: &quot;NF}&#039; datafile2\n# awk -F: &#039;{print &quot;Number of fields: &quot;NF}&#039; datafile2\n# awk -F&quot;[ :]&quot; &#039;{print $1,$2}&#039; datafile2\n\n# awk &#039;$7 == 5&#039; datafile\n# awk &#039;$2 == &quot;CT&quot; {print $1, $2}&#039; datafile\n# awk &#039;$7 != 5&#039; datafile\n# awk &#039;$7 &lt; 5 {print $4, $7}&#039; datafile\n# awk &#039;$6 &gt; .9 {print $1,$6}&#039; datafile\n# awk &#039;$8 &lt;= 17 {print $8}&#039; datafile\n# awk &#039;$8 &gt;= 17 {print $8}&#039; datafile\n# awk &#039;$8 &gt; 10 &amp;&amp; $8 &lt; 17&#039; datafile\n# awk &#039;$2 == &quot;NW&quot; || $1 ~ \/south\/ {print $1, $2}&#039; datafile\n# awk &#039;!($8 == 13){print $8}&#039; datafile\n# awk &#039;\/southem\/{print $5 + 10}&#039; datafile\n\n# awk &#039;\/southem\/{print $8 + 10}&#039; datafile\n# awk &#039;\/southem\/{print $5 + 10.56}&#039; datafile\n# awk &#039;\/southem\/{print $8 - 10}&#039; datafile\n# awk &#039;\/southem\/{print $8 \/ 2 }&#039; datafile\n# awk &#039;\/southem\/{print $8 \/ 3 }&#039; datafile\n# awk &#039;\/southem\/{print $8 * 2 }&#039; datafile\n# awk &#039;\/southem\/{print $8 % 2 }&#039; datafile\n\n# awk &#039;$3 ~ \/^Suan\/ {print &quot;Percentage: &quot;$6 + .2   &quot; Volume: &quot; $8}&#039; datafile\n# awk &#039;\/^western\/,\/^eastern\/&#039; datafile\n# awk &#039;{print ($7 &gt; 4 ? &quot;high &quot;$7 : &quot;low &quot;$7)}&#039; datafile           \/\/\u6761\u4ef6\u8fd0\u7b97\u7b26\n# awk &#039;$3 == &quot;Chris&quot; {$3 = &quot;Christian&quot;; print}&#039; datafile          \/\/\u8d4b\u503c\u8fd0\u7b97\u7b26\n# awk &#039;\/Derek\/ {$8 += 12; print $8}&#039; datafile     \/\/$8 += 12\u7b49\u4ef7\u4e8e$8 = $8 + 12\n# awk &#039;{$7 %= 3; print $7}&#039; datafile              \/\/$7 %= 3\u7b49\u4ef7\u4e8e$7 = $7 % 3 <\/code><\/pre>\n<h2>\u4e03 awk\u6d41\u7a0b\u63a7\u5236<\/h2>\n<div id=\"rml_readmorelogin_placeholder\" style=\"position:relative;\"><div id=\"rml_fade_content\" style=\"position: absolute;\r\ntop:-10em;\r\nwidth:100%;\r\nheight:10em;\r\nbackground: -webkit-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -moz-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -o-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -ms-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\"><\/div><div class=\"wpf-controller aru_rml_from_in_post\" style=\"background-color:#eeeeee;border:5px solid #cce6ff;\" id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><h2 id=\"Header\">\u67e5\u770b\u66f4\u591a<\/h2><div id=\"Message\"><p>\u8054\u7cfb\u7ba1\u7406\u5458\u5fae\u4fe1tutu19192010\uff0c\u6ce8\u518c\u8d26\u53f7<\/p>\n<\/div><div id=\"StatusBarHeader\"><\/div><form id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><input name=\"post_id\" value=\"419\" type=\"hidden\"\/><input name=\"_init_callback\" value=\"InitLogin\" type=\"hidden\"\/><input name=\"post_id\" value=\"419\" type=\"hidden\"\/><input name=\"rt_ype\" value=\"1\" type=\"hidden\"\/><input name=\"nonce\" value=\"7f6afbf7e9\" type=\"hidden\"\/><input name=\"_wpnonce\" value=\"2f39b0f723\" type=\"hidden\"\/><input name=\"_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_proxy_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_view\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginView\" type=\"hidden\"\/><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\" width=\"400px\"><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Username:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"username\" value=\"\" type=\"text\"\/><\/td><\/tr><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Password:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"password\" value=\"\" type=\"password\"\/><\/td><\/tr><\/tbody><\/table><p class=\"wpf-table-placeholder submit\"><button class=\"wp_plugin_framework_ajax_button\" type=\"button\" style=\"background-color:#4D90FE;;color:#ffffff;;border:1px solid #3079ed;\" name=\"_event\" value=\"ButtonLogin\">Log in<\/button><\/p><\/td><td class=\"wpf-table-placeholder-input\"><\/td><\/tr><\/tbody><\/table><\/form><div id=\"ButtonStartRegister\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=register\">Register<\/a><\/div><div id=\"Link1\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=lostpassword\">Forgotten username or password?<\/a><\/div><div id=\"StatusBarFooter\"><\/div><\/div><\/div><div id=aru_remaining_content><\/div>","protected":false},"excerpt":{"rendered":"<p>\u4e09\u5251\u5ba2\u4e4bawk\u547d\u4ee4 \u4e00 awk\u7b80\u4ecb \u200b awk\u547d\u540d\u6e90\u81ea\u4e8e\u5b83\u7684\u4e09\u5927\u4f5c\u8005\u540d\u5b57\u7684\u9996\u5b57\u6bcd\uff0c\u5206\u522b\u662fAlfred Aho\u3001 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[70],"tags":[21,19,75,22,20],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/419"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=419"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/419\/revisions"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}