Linux: grep

grep 点号：

grep "ctl\." -rn

完全匹配用 -w

  -w, --word-regexp         强制 PATTERN 仅完全匹配字词

frameworks/base$ find | grep SurfaceView.java -w
./core/java/android/view/SurfaceView.java
./tools/layoutlib/bridge/src/android/view/SurfaceView.java