Re: Shell redirection success/failure isn't checked

[Chet Ramey]

Jeff Connelly wrote:

> Further research reveals that bash uses /bin/echo, but the other shell
> has its own internal echo, which is why it prints the error.

What further research?  Bash does, in fact, use its own echo builtin
(try `type echo'), which returns failure when writes fail but does not
print an error message.

The bash echo actually does the writes and calls ferror(), returning
failure if ferror() returns non-zero.

Chet