On Sun, Oct 11, 2009 at 11:36:52PM +0200, Stefan Miklosovic wrote: > if error output of some program appear on screen, it is possible to > print it also to some file simultaneously?
Depends on the program, but generally, yes. http://en.wikipedia.org/wiki/Standard_streams http://en.wikipedia.org/wiki/Redirection_(computing) > e.g if I "cat" file which do not exist, error is on screen, I want to > add that error to some file (errors.txt) Replacing 'cat file_that_does_not_exist' with 'badcommand' # redirect STDERR to a file badcommand 2> errors.txt # append STDERR to a file badcommand 2>> errors.txt # fun with file descriptors to have it both ways badcommand 3>&1 1>&2 2>&3 | tee errors.txt -- George _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
