bos@289: $ \textbf{echo 'this is my original thought' > oldfile}
bos@289: $ \textbf{echo 'i have changed my mind' > newfile}
bos@144: $ \textbf{diff -u oldfile newfile > tiny.patch}
bos@144: $ \textbf{cat tiny.patch}
bos@144: 
bos@144: 
bos@144: @@ -1 +1 @@
bos@289: -this is my original thought
bos@289: +i have changed my mind
bos@144: $ \textbf{patch < tiny.patch}
bos@144: patching file oldfile
bos@253: $ \textbf{cat oldfile}
bos@289: i have changed my mind