blocks|key|561|text|AWK+book上有很多很棒的例子。它们过去是从Kernighan's+webpage上收集下载的(现在是404)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|562|entityMap|0|LINK|mutability|MUTABLE|url|https://archive.org/details/pdfy-MgN0H1joIoDVoIC7|1|http://cm.bell-labs.com/cm/cs/who/bwk/awkcode.txt^0|0|8|0|O|J|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

The <a href="https://archive.org/details/pdfy-MgN0H1joIoDVoIC7" rel="nofollow noreferrer">AWK book</a> is full of great examples. They used to be collected for download from <a href="http://cm.bell-labs.com/cm/cs/who/bwk/awkcode.txt" rel="nofollow noreferrer">Kernighan's webpage</a> (404s now).

blocks|key|720|text|你可以找到几个不错的one+liners+here。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|721|entityMap|0|LINK|mutability|MUTABLE|url|http://www.catonmat.net/blog/awk-one-liners-explained-part-three/^0|L|4|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You can find several nice one liners <a href="http://www.catonmat.net/blog/awk-one-liners-explained-part-three/" rel="nofollow noreferrer">here</a>.

blocks|key|4068513|text|我使用的是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4068514|df+-m+%7C+awk+'{p%2B=$3};+END+{print+p}'|code-block|syntax|javascript|4068515|跨文件系统合计系统上使用的所有磁盘空间。|4068516|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I use this: 

<pre><code>df -m | awk '{p+=$3}; END {print p}'
</code></pre>

To total all disk space used on a system across filesystems.

blocks|key|3222466|text|很多年前，我在awk中写了一个结尾脚本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222467|#!/usr/bin/awk+-f
BEGIN+{
++lines=10
}

{
++high+=+NR+%25+lines+%2B+1
++a[high]+=+$0
}

END+{
++for+(i+=+0;+i+<+lines;+i%2B%2B)+{
++++n+=+(i+%2B+high)+%25+lines+%2B+1
++++if+(n+in+a)+{
++++++print+a[n]
++++}
++}
}|code-block|syntax|javascript|3222468|我知道这很愚蠢，但这就是awk对你做的。玩它真的很有趣。|3222469|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Many years ago I wrote a tail script in awk:

<pre><code>#!/usr/bin/awk -f
BEGIN {
 lines=10
}

{
 high = NR % lines + 1
 a[high] = $0
}

END {
 for (i = 0; i &lt; lines; i++) {
 n = (i + high) % lines + 1
 if (n in a) {
 print a[n]
 }
 }
}
</code></pre>

It's silly, I know, but that's what awk does to you. It's just very fun playing with it.

blocks|key|497|text|Henry+Spencer在awk上写了一个相当好的nroff实现。他称之为"awf“。他还声称，如果Larry+Wall知道awk有多强大，他就不需要发明perl了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|498|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Henry Spencer wrote a fairly good implementation of nroff on awk. He called it "awf". He also claimed that if Larry Wall had known how powerful awk was, he wouldn't have needed to invent perl.

blocks|key|869591|text|这里有几个我过去经常使用的awks。请注意，您可以使用$1、$2等来获取所需的列。因此，对于操作一堆文件，例如，这里有一个愚蠢的命令，你可以使用它来代替mv…|type|unstyled|depth|inlineStyleRanges|entityRanges|data|869592|ls+-1+*.mp3+%7C+awk+'{printf("mv+%25s+newDir/%25s\n",$1,$1)}'+%7C+/bin/sh|code-block|syntax|javascript|869593|或者，如果您正在查看一组进程，则可能...|869594|ps+-ef+%7C+grep+-v+username+%7C+awk+'{printf("kill+-9+%25s\n",$2)}'+%7C+/bin/sh|869595|虽然很琐碎，但你可以看到这会给你带来很大的帮助。=)我以前做的大部分事情都可以使用xargs来完成，但是，嘿，谁还需要这些新的花哨命令呢？|869596|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Here's a couple of awks that I used to use regularly ... note that you can use $1, $2, etc to get out the column you want. So, for manipulating a bunch of files, for example here's a stupid command you could use instead of mv ...

<pre><code>ls -1 *.mp3 | awk '{printf("mv %s newDir/%s\n",$1,$1)}' | /bin/sh
</code></pre>

Or if you're looking at a set of processes maybe ...

<pre><code>ps -ef | grep -v username | awk '{printf("kill -9 %s\n",$2)}' | /bin/sh
</code></pre>

Pretty trivial but you can see how that would get you quite a ways. =) Most of the stuff I used to do you can use xargs for, but hey, who needs them new fangled commands?

blocks|key|616|text|我经常使用这个脚本来编辑PATH和类似path的环境变量。用法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|617|export+PATH=$(clnpath+/new/bin:/other/bin:$PATH+/old/bin:/other/old/bin)|code-block|syntax|javascript|618|此命令在路径前面添加/new/bin和/other/bin，从路径中删除/old/bin和/other/old/bin+(如果存在-如果不存在则不会出现错误)，并删除路径上的重复目录条目。|619|:+++"@(#)$Id:+clnpath.sh,v+1.6+1999/06/08+23:34:07+jleffler+Exp+$"
#
#+++Print+minimal+version+of+$PATH,+possibly+removing+some+items

case+$#+in
0)++chop="";+path=${PATH:?};;
1)++chop="";+path=$1;;
2)++chop=$2;+path=$1;;
*)++echo+"Usage:+`basename+$0+.sh`+[$PATH+[remove:list]]"+>&2
++++exit+1;;
esac

#+Beware+of+the+quotes+in+the+assignment+to+chop!
echo+"$path"+%7C
${AWK:-awk}+-F:+'#
BEGIN+++++++{+++++++#+Sort+out+which+path+components+to+omit
++++++++++++++++++++chop="'"$chop"'";
++++++++++++++++++++if+(chop+!=+"")+nr+=+split(chop,+remove);+else+nr+=+0;
++++++++++++++++++++for+(i+=+1;+i+<=+nr;+i%2B%2B)
++++++++++++++++++++++++++++omit[remove[i]]+=+1;
++++++++++++}
{
++++for+(i+=+1;+i+<=+NF;+i%2B%2B)
++++{
++++++++++++x=$i;
++++++++++++if+(x+==+"")+x+=+".";
++++++++++++if+(omit[x]+==+0+&&+path[x]%2B%2B+==+0)
++++++++++++{
++++++++++++++++++++output+=+output+pad+x;
++++++++++++++++++++pad+=+":";
++++++++++++}
++++}
++++print+output;
}'|620|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I use this script a lot for editing PATH and path-like environment variables.
Usage:

<pre><code>export PATH=$(clnpath /new/bin:/other/bin:$PATH /old/bin:/other/old/bin)
</code></pre>

This command adds /new/bin and /other/bin in front of PATH, removes both /old/bin and /other/old/bin from PATH (if present - no error if absent), and removes duplicate directory entries on path.

<pre><code>: "@(#)$Id: clnpath.sh,v 1.6 1999/06/08 23:34:07 jleffler Exp $"
#
# Print minimal version of $PATH, possibly removing some items

case $# in
0) chop=""; path=${PATH:?};;
1) chop=""; path=$1;;
2) chop=$2; path=$1;;
*) echo "Usage: `basename $0 .sh` [$PATH [remove:list]]" &gt;&amp;2
 exit 1;;
esac

# Beware of the quotes in the assignment to chop!
echo "$path" |
${AWK:-awk} -F: '#
BEGIN { # Sort out which path components to omit
 chop="'"$chop"'";
 if (chop != "") nr = split(chop, remove); else nr = 0;
 for (i = 1; i &lt;= nr; i++)
 omit[remove[i]] = 1;
 }
{
 for (i = 1; i &lt;= NF; i++)
 {
 x=$i;
 if (x == "") x = ".";
 if (omit[x] == 0 &amp;&amp; path[x]++ == 0)
 {
 output = output pad x;
 pad = ":";
 }
 }
 print output;
}'
</code></pre>

blocks|key|4068713|text|计数httpd使用的内存|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4068714|ps+-ylC+httpd+%7C+awk+'/[0-9]/+{SUM+%2B=+$8}+END+{print+SUM/1024}'|code-block|syntax|javascript|4068715|或任何其他进程通过替换httpd。除以1024得到以MB为单位的输出。|4068716|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Count memory used by httpd

<pre><code>ps -ylC httpd | awk '/[0-9]/ {SUM += $8} END {print SUM/1024}'
</code></pre>

Or any other process by replacing httpd. Dividing by 1024 to get output in MB.

blocks|key|864386|text|我设法为UNIX构建了一个DOS树命令模拟器(+find+%2B+awk+)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|864387|find+.+-type+d+-print+2>/dev/null%7Cawk+'{for+(i=1;i<+NF;i%2B%2B)printf("%25"length($i)"s","%7C");gsub(/[%5E\/]*\//,"--",$0);print+$NF}'++FS='/'|code-block|syntax|javascript|864388|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I managed to build a DOS tree command emulator for UNIX ( find + awk ):

<pre><code>find . -type d -print 2&gt;/dev/null|awk '{for (i=1;i&lt; NF;i++)printf("%"length($i)"s","|");gsub(/[^\/]*\//,"--",$0);print $NF}' FS='/'
</code></pre>

blocks|key|3222617|text|在两个图案之间打印线条：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222618|awk+'/END/{flag=0}flag;/START/{flag=1}'+inputFile|code-block|syntax|javascript|3222619|详细说明：http://nixtip.wordpress.com/2010/10/12/print-lines-between-two-patterns-the-awk-way/|offset|length|3222620|entityMap|0|LINK|mutability|MUTABLE|url|http://nixtip.wordpress.com/2010/10/12/print-lines-between-two-patterns-the-awk-way/^0|0|0|5|2C|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Print lines between two patterns:

<pre><code>awk '/END/{flag=0}flag;/START/{flag=1}' inputFile
</code></pre>

Detailed explanation: <a href="http://nixtip.wordpress.com/2010/10/12/print-lines-between-two-patterns-the-awk-way/" rel="nofollow">http://nixtip.wordpress.com/2010/10/12/print-lines-between-two-patterns-the-awk-way/</a>

blocks|key|4068947|text|几个最喜欢的，本质上彼此无关。阅读为两个不同的、不相关的建议。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4068948|轻松识别列号|4068949|4068950|对于那些经常使用awk的人，就像我在工作中进行日志分析一样，我经常发现自己需要找出文件的列号。因此，如果我正在分析Apache+access文件(可以在here中找到一些示例)，我会对该文件运行以下脚本：|offset|length|4068951|NR+==+1+{
++++++++for+(i+=+1+;+i+<=+NF+;+i%2B%2B)
++++++++++++++++{
++++++++++++++++print+i+"\t"+$i
++++++++++++++++}
++++++++}
NR+>+1++{
++++++++exit
++++++++}|code-block|syntax|javascript|4068952|我通常称它为"cn.awk"，意思是‘c’‘olumn’n‘’umbers。很有创意，是吧?不管怎么说，输出结果如下：|4068953|1+++64.242.88.10
2+++-
3+++-
4+++[07/Mar/2004:16:05:49
5+++-0800]
6+++"GET
7+++/twiki/bin/edit/Main/Double_bounce_sender?topicparent=Main.ConfigurationVariables
8+++HTTP/1.1"
9+++401
10++12846|4068954|很容易分辨出什么是什么。我通常在我的服务器上给它起别名，并把它放在任何地方。|4068955|4068956|按名称引用字段|4068957|现在，假设您的文件有一个标题行，并且您更愿意使用这些名称而不是字段编号。这允许您这样做：|4068958|NR+==+1+{
++++for+(i+=+1+;+i+<=+NF+;+i%2B%2B)
++++++++{
++++++++field[$i]+=+i
++++++++}
++++}|4068959|现在，假设我有一个标题行...|4068960|metric,time,val,location,http_status,http_request|style|CODE|4068961|我想对val列求和。我可以通过名称来引用它，而不是$3：|4068962|NR+>+1++{
++++SUM+%2B=+$field["val"]
++++}|4068963|主要的好处是使脚本更具可读性。|4068964|entityMap|0|LINK|mutability|MUTABLE|url|http://www.monitorware.com/en/logsamples/apache.php^0|0|0|0|24|4|0|0|0|0|0|0|0|0|0|0|0|0|1D|0|3|3|0|0|0^^$0|@$1|2|3|4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1L|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|1N|8|@]|9|@$G|1O|H|1P|1|1Q]]|A|$]]|$1|I|3|J|5|K|7|1R|8|@]|9|@]|A|$L|M]]|$1|N|3|O|5|6|7|1S|8|@]|9|@]|A|$]]|$1|P|3|Q|5|K|7|1T|8|@]|9|@]|A|$L|M]]|$1|R|3|S|5|6|7|1U|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1W|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1X|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|K|7|1Y|8|@]|9|@]|A|$L|M]]|$1|10|3|11|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|20|8|@$G|21|H|22|14|15]]|9|@]|A|$]]|$1|16|3|17|5|6|7|23|8|@$G|24|H|25|14|15]]|9|@]|A|$]]|$1|18|3|19|5|K|7|26|8|@]|9|@]|A|$L|M]]|$1|1A|3|1B|5|6|7|27|8|@]|9|@]|A|$]]|$1|1C|3|-4|5|6|7|28|8|@]|9|@]|A|$]]]|1D|$1E|$5|1F|1G|1H|A|$1I|1J]]]]

A couple of favorites, essentially unrelated to each other. Read as 2 different, unconnected suggestions.

<h2>Identifying Column Numbers Easily</h2>

:

For those that use awk frequently, as I do for log analysis at work, I often find myself needing to find out what the column numbers are for a file. So, if I am analyzing, say, Apache access files (some samples can be found <a href="http://www.monitorware.com/en/logsamples/apache.php" rel="nofollow">here</a>) I run the script below against the file:

<pre><code>NR == 1 {
 for (i = 1 ; i &lt;= NF ; i++)
 {
 print i "\t" $i
 }
 }
NR &gt; 1 {
 exit
 }
</code></pre>

I typically call it "cn.awk", for 'c'olumn 'n'umbers. Creative, eh? Anyway, the output looks like:

<pre><code>1 64.242.88.10
2 -
3 -
4 [07/Mar/2004:16:05:49
5 -0800]
6 "GET
7 /twiki/bin/edit/Main/Double_bounce_sender?topicparent=Main.ConfigurationVariables
8 HTTP/1.1"
9 401
10 12846
</code></pre>

Very easy to tell what's what. I usually alias this on my servers and have it everywhere.

<hr>

<h2>Referencing Fields by Name</h2>

Now, suppose your file has a header row and you'd rather use those names instead of field numbers. This allows you to do so:

<pre><code>NR == 1 {
 for (i = 1 ; i &lt;= NF ; i++)
 {
 field[$i] = i
 }
 }
</code></pre>

Now, suppose I have this header row...

<code>metric,time,val,location,http_status,http_request</code>

...and I'd like to sum the <code>val</code> column. Instead of referring to $3, I can refer to it by name:

<pre><code>NR &gt; 1 {
 SUM += $field["val"]
 }
</code></pre>

The main benefit is making the script much more readable.

blocks|key|869861|text|打印字段是大多数AWK教程中提到的第一件事。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|869862|awk+'{print+$1,$3}'+file|code-block|syntax|javascript|869863|不太为人所知但同样有用的是排除字段，这也是可能的：|869864|awk+'{$1=$3=""}1'+file|869865|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Printing fields is one of the first things mentioned in most AWK tutorials.

<pre><code>awk '{print $1,$3}' file
</code></pre>

Lesser known but equally useful is excluding fields which is also possible:

<pre><code>awk '{$1=$3=""}1' file
</code></pre>

I find AWK really useful. Here is a one liner I put together to manipulate data.

<pre><code>ls | awk '{ print "awk " "'"'"'" " {print $1,$2,$3} " "'"'"'" " " $1 ".old_ext &gt; " $1 ".new_ext" }' &gt; file.csh
</code></pre>

I used this AWK to make a script file that would rename some files and only print out selective columns. Anyone know a better way to do this? What are you best AWK one liners or clever manipulations?

Best Awk Commands

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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功能1上新10个字符

功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符。

功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符。

功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符

功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符

功能4上新

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社区新版编辑器体验调研

我发现AWK真的很有用。这是我用来操纵数据的一个线条。ls | awk '{ print "awk " "'"'"'"  " {print $1,$2,$3} " "'"'"'"  " " $1 ".old_ext > " $1    ".new_ext"  }' > file.csh我使用这个AWK创建了一个脚本文件，该文件将重命名一些文件，并且只打印出选择性的列。有人知道更好的方法吗？你最好的

问最佳Awk命令
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回答 12

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回答 12

Stack Overflow用户

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活动

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关于

腾讯云开发者

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问最佳Awk命令
EN