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look: Linux 下验证拼写并显示以某字符串开头的行的命令

你有没有感到需要一款Linux下的命令行工具它可以验证你的拼写一款可以显示包含特定前缀字符串的行好的本篇中我们会讨论Linux下的 look命令,它满足了上面的这些要求。

Linux下的look命令

下面是来自look命令man页面描述的截图

测试环境

  • OS Ubuntu 13.04
  • Shell Bash 4.2.45
  • Application look 2.20.1-5.1ubuntu8

简要教程

现在让我们通过一些特定例子来讨论这个命令。

假设你要验证单词'rendezvous'的拼写。你可以轻松地用look命令做到。

这是个例子 :

$ look rendez
rendezvous
rendezvous's
rendezvoused
rendezvouses
rendezvousing

如你所见我只传入了单词的前面几个字符作为命令行参数命令产生了所有的相关单词。这些单词通过look命令从文件 /usr/share/dict/words取回。

另外一种情况是需要打印所有包含特定字符串的行。比如如果我想要显示c文件中所有的头文件那么我就用下面的方法

$ look "#include" efence_test.c 
#include <stdio.h>
#include <stdlib.h>

如你所见它生成了所有的在文件efence_test.c中以"#include"开始的行,因此我知道了原文件中包含的头文件。

默认上所有look命令的匹配都是大小写敏感的。你可以使用非大小写敏感匹配的选项**-f**。

下面是一些look命令提供了其他一些命令行选项

想要获取这个命令的更多信息,阅读这个 man 页.

下载/安装/配置

下面是关于look命令的一些链接

  • 主页 [如果你知道这个工具的主页的话让我知道一下]
  • 下载链接

look命令成了util-linux包的一部分它在大多数Linux发行版中已经预安装了。

优点

  • 非常容易地在命令行验证拼写。
  • 在大多数Linux发行版中已经预安装。

缺点

  • 依赖于/usr/share/dict/words 来做拼写验证。

总结

一款出色的用来验证拼写的命令行工具。节省了大量时间如果你想要显示以特定字符串为开头的行的话。试一下,你一定会喜欢上它的。


via: http://mylinuxbook.com/look-verify-spellings-and-display-lines/

译者:geekpi 校对:wxy

本文由 LCTT 原创翻译,Linux中国 荣誉推出