Linux:
$ cd documents
$ find . -name "node_modules" -type d -prune -print | xargs du -chs
Windows:
$ cd documents
$ FOR /d /r . %d in (node_modules) DO @IF EXIST "%d" echo %d"
Linux:
$ cd documents
$ find . -name 'node_modules' -type d -prune -print -exec rm -rf '{}' \;
Windows:
$ cd documents
$ FOR /d /r . %d in (node_modules) DO @IF EXIST "%d" rm -rf "%d"