gulp-find

Overview

Simple text finder(files, streams) via gulp.

Install

npm install --save-dev gulp-find

Usage

Regex find

var find = require('gulp-find');

gulp.task('templates', function(){
  gulp.src(['file.txt'])
    .pipe(find(/foo(.{3})/g))
    .pipe(gulp.dest('build/file.txt'));
});

String find

var find = require('gulp-find');

gulp.task('templates', function(){
  gulp.src(['file.txt'])
    .pipe(find('bar'))
    .pipe(gulp.dest('build/file.txt'));
});

What if I need replace?

Use gulp-replace1 for string replace.
if you need first find, and replace after, you may combine gulp-find and gulp-replace via pipe