mac osx search and replace text

find

find . -type f -name '*.txt' -exec sed -i '' s/this/that/ {} +

find . -name "*.java" -exec sed -i "" 's/com.xxx.R/android.R/g' {} \;

grep -nr "@+id" *

find . -name "*.java" | xargs sed -i 's/com.xxx.R/android.R/g'

find . -name "*.xml" | xargs grep -i -n "@id/" >> output.txt

find ../xxx/ -name "*.java" | xargs grep -i -n "com.android.internal.R." >> output.txt

find . -name "*.java" | xargs grep -i -n "android.R."

find . -name "*.java" | xargs grep -i -n "R\.id\."