awk 的基本使用举例

最新推荐文章于 2025-01-02 18:02:25 发布

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#awk #开发工具

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本文介绍了如何利用awk工具进行高效的文本处理，包括字段提取、条件筛选等实用操作。通过具体的示例展示了如何匹配特定模式的行、组合字段以及进行简单的正则表达式匹配。

$ cat test.txt 
Frank
Testing 1
Hello World
TesT
123 Testing

bogon:awk-test lihex$ awk '{ print $1 }' test.txt 
Frank
Testing
Hello
TesT
123

bogon:awk-test lihex$ awk '{ print $1.$2 }' test.txt 
Frank
Testing1
HelloWorld
TesT
123Testing

bogon:awk-test lihex$ awk '{ print $1.$2.txt }' test.txt 
Frank
Testing1
HelloWorld
TesT
123Testing

bogon:awk-test lihex$ awk '/Test/{ print}' test.txt 
Testing 1
123 Testing
bogon:awk-test lihex$ awk '/[a-z]/{ print}' test.txt 
Frank
Testing 1
Hello World
TesT
123 Testing
bogon:awk-test lihex$ awk '/[0-9]/{ print}' test.txt 
bogon:awk-test lihex$ awk '{ print $1 }' test.txt 
Frank
Testing
Hello
TesT
123

bogon:awk-test lihex$ awk '{ print $1.$2 }' test.txt 
Frank
Testing1
HelloWorld
TesT
123Testing

bogon:awk-test lihex$ awk '{ print $1.$2.txt }' test.txt 
Frank
Testing1
HelloWorld
TesT
123Testing

bogon:awk-test lihex$ awk '/Test/{ print}' test.txt 
Testing 1
123 Testing
bogon:awk-test lihex$ awk '/[a-z]/{ print}' test.txt 
Frank
Testing 1
Hello World
TesT
123 Testing
bogon:awk-test lihex$ awk '/[0-9]/{ print}' test.txt 
Testing 1
123 Testing
bogon:awk-test lihex$ awk '/[0-9]$/{ print}' test.txt 
Testing 1
bogon:awk-test lihex$ awk '{ if($1 ~ /123/) print }' test.txt 
123 Testing
bogon:awk-test lihex$ awk '{ if($2 ~ /[0-9]/) print }' test.txt 
Testing 1
bogon:awk-test lihex$ grep -i test test.txt 
Testing 1
TesT
123 Testing

bogon:awk-test lihex$ vim test.txt 
bogon:awk-test lihex$ cat test.txt 
Frank:Perez
Testing 1:Testing 2
Hello World:Hi World
TesT:OMG
123 Testing:456 Testing
bogon:awk-test lihex$ awk -F: '{ print $1 }' test.txt 
Frank
Testing 1
Hello World
TesT
123 Testing
Testing 1
123 Testing
bogon:awk-test lihex$ awk '/[0-9]$/{ print}' test.txt 
Testing 1
bogon:awk-test lihex$ awk '{ if($1 ~ /123/) print }' test.txt 
123 Testing
bogon:awk-test lihex$ awk '{ if($2 ~ /[0-9]/) print }' test.txt 
Testing 1
bogon:awk-test lihex$ grep -i test test.txt 
Testing 1
TesT
123 Testing
bogon:awk-test lihex$ cat test.txt 
Frank:Perez
Testing 1:Testing 2
Hello World:Hi World
TesT:OMG
123 Testing:456 Testing
bogon:awk-test lihex$ awk -F: '{ print $1 }' test.txt 
Frank
Testing 1
Hello World
TesT
123 Testing