What's the difference between using > and >> in shell?

Question

I\'ve seen somewhere that we can use >> in shell. What\'s the difference between using > and >> in shell?

Answer 1

'>>' will let you append data to a file, where '>' will overwrite it. For example:

# cat test
test file
# echo test > test
# cat test
test
# echo file >> test
# cat test
test
file