Saves a copy of all program output (except help) in a file.
> file >> file >
> creates a new file for this output. If the file already exists, the old one is lost, and replaced by the new one.
>> appends to an existing file, if it exists, otherwise it creates one.
A bare > closes the file.
> run1
Save everything in a file run1 in the current directory. If run1 already exists, the old one is gone.
>> allof
Save everything in a file allof. If allof already exists, it is kept, and the new data is added to the end.
>
Close the file. Stop saving.