とりあえず一致するディレクトリ名だけ欲しい場合、"-l"オプションが便利です。
$ grep -l you $(find $(pwd) -type f -maxdepth 2) /Users/shuzo/src/octopress/.bundle/config /Users/shuzo/src/octopress/.editorconfig /Users/shuzo/src/octopress/.git/config /Users/shuzo/src/octopress/.git/description /Users/shuzo/src/octopress/.git/HEAD /Users/shuzo/src/octopress/.git/index /Users/shuzo/src/octopress/.git/ORIG_HEAD /Users/shuzo/src/octopress/.git/packed-refs /Users/shuzo/src/octopress/.gitattributes /Users/shuzo/src/octopress/.gitignore
ほぼgrepコマンドに準拠するgit grepでも同じ事ができます
git grep -l you .themes/classic/sass/_base.scss .themes/classic/sass/base/_layout.scss .themes/classic/sass/custom/_colors.scss .themes/classic/sass/custom/_fonts.scss .themes/classic/sass/custom/_layout.scss .themes/classic/sass/screen.scss ...