egrep
Linux egrep command syntax
Function: egrep command is used to find the specified string in the file.
Syntax: egrep [Template mode] [File or directory]
Linux egrep command example
Display qualified characters in the file. For example, to find files containing the string "Linux" in all files in the current directory, you can use the following command:
egrep Linux *
The results are as follows:
$ egrep Linux * #查找当前目录下包含字符串“Linux”的文件 testfile:hello Linux! #以下五行为testfile 中包含Linux字符的行 testfile:Linux is a free Unix-type operating system. testfile:This is a Linux testfile! testfile:Linux testfile:Linux testfile1:helLinux! #以下两行为testfile1中含Linux字符的行 testfile1:This a Linux testfile! #以下两行为testfile_2 中包含Linux字符的行 testfile_2:Linux is a free unix-type opterating system. testfile_2:Linux test xx00:hello Linux! #xx00包含Linux字符的行 xx01:Linux is a free Unix-type operating system. #以下三行为xx01包含Linux字符的行 xx01:This is a Linux testfile! xx01:Linux