grep更适合单纯的查找或匹配文本，sed更适合编辑匹配到的文本，awk更适合格式化文本，对文本进行较复杂格式处理。 1、grep 1.1 什么是grep和egrep Linux 系统中grep命令是一种强大的文本搜索工具，它能使用正则表达式搜索文本，并把匹配的行打印出来（匹配到的标红）。

grep是每个Linux发行版都预装的一个强有力的文件模式搜索工具。 无论何种原因，如果你的系统没有预装它的话，你可以很容易的通过系统的包管理器来安装它（Debian/Ubuntu系中的apt-get和RHEl/CentOS/Fedora系中的yum）。

The everlastingly useful grep command can change its character with the flip of a switch to help you find things.

The grep command can search for and list Linux files based on strings you are looking for and add the context of surrounding text.

30 Days With Ubuntu Linux: Day 19 Carrying over from yesterday’s examination of the Ubuntu command line, today’s installment of 30 Days With Ubuntu Linux is dedicated to ‘man’ and ‘grep’.

But it's important to know that you can supercharge file management in Linux from the command line by employing the grep command. With regex and grep, you can search for patterns in text files ...

The grep command is a handy, reliable tool for searching for files or information. This tutorial illustrates 10 ways to take advantage of its power and flexibility.

I should hope not. "Unix experience" implies you know how to get stuff done using tools common to most Unix-likes, like sed, grep and awk covered in this article.

The grep command is regarded as one of the most essential building blocks of command line automation. It is a search tool that can be used to perform basic text filtering and processing tasks on ...