Jilles Tjoelker <jil...@stack.nl> wrote: > On Mon, Jan 09, 2012 at 10:37:45AM -0600, Jonathan Nieder wrote: >> Michael Welsh Duggan wrote: >> > I am trying to determine why: > >> > dash -c "sleep 5 & kill %1" > >> > results in: > >> > dash: 1: kill: No such process > >> You are probably looking for the -m option. > > The cause is that the -m option ("job control") enables running commands > in separate process groups, and dash follows literally what POSIX says > about kill %job: a background process group should be signaled; however, > there is no background process group. Some shells signal one or more > processes they know are part of the job in this case, but dash calls > kill() on a process group that is guaranteed not to exist.
Right. And you don't even need %1: dash -c "sleep 5 & kill $!" works just fine. Cheers, -- Email: Herbert Xu <herb...@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe dash" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html