Merge pull request #3643 from runningwater/master

翻译完成

translated/tech/Linux or UNIX grep Command Tutorial series/20151127 Linux or UNIX grep Command Tutorial series 3--Search Multiple Words or String Pattern Using grep Command.md

@@ -1,32 +1,32 @@
-(翻译中 by runningwater)Search Multiple Words / String Pattern Using grep Command
+使用 grep 命令来搜索多个单词/字符串模式
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-How do I search multiple strings or words using the grep command? For example I'd like to search word1, word2, word3 and so on within /path/to/file. How do I force grep to search multiple words?
+要使用 grep 命令来搜索多个字符串或单词，我们该怎么做？例如我想要查找 /path/to/file 文件中的 word1、word2、word3 等单词，我怎么样命令 grep 查找这些单词呢？
 
-The [grep command supports regular expression][1] pattern. To search multiple words, use following syntax:
+[grep 命令支持正则表达式][1]匹配模式。要使用多单词搜索，请使用如下语法：
 
     grep 'word1\|word2\|word3' /path/to/file
 
-In this example, search warning, error, and critical words in a text log file called /var/log/messages, enter:
+下的例子中，要在一个名叫 /var/log/messages 的文本日志文件中查找 warning、error 和 critical 这几个单词，输入：
 
     $ grep 'warning\|error\|critical' /var/log/messages
 
-To just match words, add -w swith:
+仅仅只是要匹配单词的话，可以加上 -w 选项参数：
 
     $ grep -w 'warning\|error\|critical' /var/log/messages
 
-egrep command can skip the above syntax and use the following syntax:
+egrep 命令可以跳过上面的语法格式，其使用的语法格式如下：
 
     $ egrep -w 'warning|error|critical' /var/log/messages
 
-I recommend that you pass the -i (ignore case) and --color option as follows:
+我建义您们加上 -i (忽略大小写) 和 --color 选项参数，如下示：
 
     $ egrep -wi --color 'warning|error|critical' /var/log/messages
 
-Sample outputs:
+输出示例：
 
 ![Fig.01: Linux / Unix egrep Command Search Multiple Words Demo Output](http://s0.cyberciti.org/uploads/faq/2008/04/egrep-words-output.png)
 
-Fig.01: Linux / Unix egrep Command Search Multiple Words Demo Output
+Fig.01: Linux / Unix egrep 命令查找多个单词输出例子
 
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