> f; echo $?; ls f
> /nonexist/f; echo $?
set -e; > /nonexist/f; echo not here
x=1 y=2 2>f >&2; echo "$x $y"; cat f
x=1 > /nonexist/f; echo "$? [$x]"
ec\@Nho joined
< /nonexist/f; echo $?
x=5 >f 2>&1; echo $x
2>/dev/null >/nonexist/f; echo $?
f() { echo in; }; > f f; cat f
