Linux中Grep常用的15个例子
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时间：2015年06月20日
Grep命令主要用于从文件中查找指定的字符串。
首先建一个demo_file:
$ cat demo_file THIS LINE IS THE 1ST UPPER CASE LINE IN THIS FILE. this line is the 1st lower case line in this file. This Line Has All Its First Character Of The Word With Upper Case. Two lines above this line is empty. And this is the last line.
例01:从单个文件中查找指定的字符串
$ grep "this" demo_file this line is the 1st lower case line in this file. Two lines above this line is empty.
例02:从多个文件中查找指定的字符串
$ cp demo_file demo_file1 $ grep "this" demo_* demo_file:this line is the 1st lower case line in this file. demo_file:Two lines above this line is empty. demo_file:And this is the last line. demo_file1:this line is the 1st lower case line in this file. demo_file1:Two lines above this line is empty. demo_file1:And this is the last line.
例03:忽略大小写使用 grep -i
$ grep -i "the" demo_file THIS LINE IS THE 1ST UPPER CASE LINE IN THIS FILE. this line is the 1st lower case line in this file. This Line Has All Its First Character Of The Word With Upper Case. And this is the last line.
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原文链接: http://www.thegeekstuff.com/2009/03/15-practical-unix-grep-command-examples/
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