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这是 [GNU awk](https://www.gnu.org/software/gawk/manual/gawk.html) 的单页快速参考备忘单,其中涵盖了常用的 `awk` 表达式和命令。
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入门
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---------------
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------
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### 试试
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该程序可用于选择文件中的特定记录并对其执行操作
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```shell
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$ awk -F: '{print $1, $NF}' /etc/passwd
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```
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