Simple redirection: STDOUT to a file

me@box:~$ echo “test line one” test line one

me@box:~$ echo “test line one” > test.txt me@box:~$ cat test.txt test line one

me@box:~$ echo “test line two” > test.txt me@box:~$ echo “test line three” >> test.txt me@box:~$ cat test.txt test line two test line three