There are serveral different ways (of course, this in UNIX-like after all, there's always more than one way to cat a skin ).
This will save all output from command into file.out, including any error messages.
command > file.out 2>&1
This will save all output from command into file.out, as well as showing it on the screen at the same time.
command 2>&1 | tee file.out
HTH