To copy recent files from a folder to somewhere else:
cp $(ls -lrt | tail -2 |awk '{print $9}') ../ (copying last 2 recent files smwer)

To find a word in a directory lets say err

ls -Rl | grep ^-r | awk '{print $10}' |xargs cat | grep -w import
or
ls -Rl | grep ^-r | awk '{print $10}' |xargs cat | grep '\bimport\b'