bos@144: $ \textbf{echo 'this is my first line' > oldfile}
bos@144: $ \textbf{echo 'my first line is here' > 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@144: -this is my first line
bos@144: +my first line is here
bos@144: $ \textbf{patch < tiny.patch}
bos@144: patching file oldfile
bos@144: $ \textbf{cat newfile}
bos@144: my first line is here