如何在linux中查找包含字符串的行
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How to find lines containing a string in linux
提问by alwbtc
I have a file in Linux, I would like to diplay lines which contain a specific string in that file, how to do this?
我在 Linux 中有一个文件，我想显示该文件中包含特定字符串的行，该怎么做？
采纳答案by knittl
The usual way to do this is with grep
通常的方法是使用 grep
grep 'pattern' file
回答by Brian Agnew
The grepfamily of commands (incl egrep, fgrep) is the usual solution for this.
所述的grep命令的家族（包括egrep的，fgrep一样）是用于这个通常的解决方法。
$ grep pattern filename
If you're searching source code, then ackmay be a better bet. It'll search subdirectories automatically and avoid files you'd normally not search (objects, SCM directories etc.)
如果您正在搜索源代码，那么ack可能是更好的选择。它将自动搜索子目录并避免您通常不会搜索的文件（对象、SCM 目录等）
回答by deFreitas
/tmp/myfile
/tmp/我的文件
first line text
wanted text
other text
the command
命令
$ grep -n "wanted text" /tmp/myfile | awk -F ":" '{print }'
2
回答by Sabrina
Besides grep, you can also use other utilities such as awkor sed
此外grep，您还可以使用其他实用程序，例如awk或sed
Here is a few examples. Let say you want to search for a string isin the file named GPL.
这里有几个例子。假设您要is在名为GPL.
Your sample file
您的示例文件
user@linux:~$ cat -n GPL
1 The GNU General Public License is a free, copyleft license for
2 The licenses for most software and other practical works are designed
3 the GNU General Public License is intended to guarantee your freedom to
4 GNU General Public License for most of our software;
user@linux:~$
1. grep
1.grep
user@linux:~$ grep is GPL
The GNU General Public License is a free, copyleft license for
the GNU General Public License is intended to guarantee your freedom to
user@linux:~$
2. awk
2.awk
user@linux:~$ awk /is/ GPL
The GNU General Public License is a free, copyleft license for
the GNU General Public License is intended to guarantee your freedom to
user@linux:~$
3. sed
3. sed
user@linux:~$ sed -n '/is/p' GPL
The GNU General Public License is a free, copyleft license for
the GNU General Public License is intended to guarantee your freedom to
user@linux:~$
Hope this helps
希望这可以帮助
