如何在 Windows 上的大型文本文件中搜索和提取包含特定字符串的行？

Question

I have a large text file (3MB over 50,000 lines) and I would wish to perform a filter on it.

I see that it's quite possible to do on a Linux machine, but I don't know how to go about filtering it on windows.

I would like every line that includes a specified string (eg cake ) to be copied into a new text file - simple as that. I just have no idea.

Thanks :)

Answer 1

You might want to use the MS-DOS find command with redirection. For example:

find "cake" yourfile.txt > output.txt

You'll have to execute the line in the directory where your large text file is located.

Source: http://ss64.com/nt/find.html

Answer 2

C# with Visual Studio.

c# search string in txt file

int counter = 0;
string current;
string[] cakeLines;

System.IO.StreamReader file = new System.IO.StreamReader("c:\\test.txt");
System.IO.StreamReader file2 = new System.IO.StreamReader("c:\\test2.txt");
while((current = file.ReadLine()) != null)
{
    if ( current.Contains("cake") )
    {
        cakeLines[counter] = current;
        file2.WriteLine(cakeLines[counter]);
    }

   counter++;
}

file.Close();
file2.Close();