On 9/25/16, Martijn Dekker <mart...@inlv.org> wrote: > The '!' operator in the legacy test/[ builtin does not invert the result > of the -o operator. Consequently the command > > [ ! -o noclobber ] > > amounts to a no-op, always returning exit status 0. > > Proof: > > $ set -o noclobber && [ -o noclobber ] && [ ! -o noclobber ] && echo bug > bug > > Interestingly, mksh has this bug as well, though not the original pdksh. > > Thanks, > > - M. > >
[ ! -o noclobber ] means is '!' a non empty string? if not, is 'noclobber' a non empty string? --- xoxo iza
