WFDB Applications Guide - PhysioNet

FAQ WFDB Applications Guide FAQ
How can I save the output of ... in a file?
How can one program read another’s output?
If you are running programs from a command prompt (by typing commands into a terminal emulator window or an
MS-DOS box), these things can be done easily.
If you have ever used GNU/Linux, Unix, or MS-DOS, you may have captured the output of a program by
redirecting it to a file, like this:
foo >bar
The > operator redirects foo’s standard output (which would normally appear on-screen) into a file named bar.
If bar exists already, its contents are replaced. If you wish to append foo’s output to whatever is already contained
in bar, use a command such as this instead:
foo >>bar
There is an analogous operator that arranges for a program’s standard input (which would normally be read from
whatever you type on the keyboard) to be read from a file instead:
baz , >>,