问题
Sorry about the dummy question here.
Under Windows I would like to be able to filter one .txt file into a new one. Filtering all lines that contain a specific string.
I know this could well be a really easy one, but would really appreciate a few pointers please.
回答1:
Use the findstr command:
findstr my-string filename > new-file
findstr /? will give you a usage message telling you how to use findstr (including the /V switch if you wanted to filter lines out rather than filtering them in.)
Or if you're familiar with grep and wishing you had it on Windows, install Cygwin. :-)
回答2:
Powershell has some neat string comparison features. You can pipe the output to a new file.
^^ There are some better links as to how to use Powershell - but I can't find them this minute. If you go the Powershell route there are lots of examples on the internet.
回答3:
There's a logfile filtering utility Logfilter (www.casstor.com), that can easily do this. You can define multiple filter strings as well as use regular expressions in your filters. I think it might be what you're looking for.
来源：https://stackoverflow.com/questions/8297706/filter-a-text-file-into-a-new-text-file