Verifying the Backup Command

Let’s check if the following command works correctly.

tar -cjf ~/photo.tar.bz2 ~/photo &&
  echo "tar - OK" > results.txt ||
  echo "tar - FAILS" > results.txt &&
cp -f ~/photo.tar.bz2 ~/backup &&
  echo "cp - OK" >> results.txt ||
  echo "cp - FAILS" >> results.txt

We can ...