groovy - grep number of occurrences a string exists in a bunch of files -

groovy - grep number of occurrences a string exists in a bunch of files -

i want count number of times string occurs in text files within folder , sub folders.

the command doing using grep on linux this

grep string * | wc -l

any ideas how using groovy instead?

thanks!

try:

assert 2 == ['a','b','c','a'].grep ( ~/a+/ ).size()

where ['a','b','c','a'] readlines() file need process or file collection.

it works on file object:

def f = file.createtempfile('111','222') f.deleteonexit() f.text = "a\na\nb\nc" assert 2 == f.grep(~/a+/).size()

an sample solution:

import groovy.io.filetype def parent = file.createtempdir() parent.deleteonexit() def f1 = file.createtempfile('111','111', parent) f1.deleteonexit() def f2 = file.createtempfile('222','222', parent) f2.deleteonexit() def f3 = file.createtempfile('222','222', parent) f3.deleteonexit() f1.text = 'aa\naa\nbb' f2.text = 'cc\nbb\nbb' f3.text = 'cc\ncc\naa\naa' def files = [] parent.eachfilerecurse (filetype.files) { file -> files << file } assert 4 == files.collect { f -> f.grep(~/a+/).size() }.sum()

groovy count