On Mon, Jan 14, 2013 at 10:03 PM, douxin <wq-d...@cn.fujitsu.com> wrote:
> Hello: > i am from China and i am working on investigating the difference > between bash V4.2 and V4.1 > > according to official log there is a new feature description > > "Posix mode shells no longer exit if a variable assignment error > occurs with an assignment preceding a command that is not a special builtin" > > i wrote a script saved as "test.sh" > > readonly a=3 > a=2 > echo "this is incorrect." > > and i wanted to demonstrate the different behavior on bash V4.1 and > V4.2 > > but i tried all below,there was no difference > > 1) set -o posix then ran the script > 2) bash --posix test.sh > 3) sh test.sh > > i appreciate if you can tell me what's the problem and how to > demonstrate the new feature against V4.1 > > sorry for my disturbance > > Dou > > > I believe that's referring to var=value command, as in the syntax to export a variable into "command"s environment. readonly a=3 a=2 echo foo
