Re: I think bash logic in a loop like : while [ condition] |read somevar is flawed.

[rens]

Mr Down,

you are  a master at evading the issue.

and therefore, i.m.h.o, completely useless as a programmer.

If you try explain your statements about scope to yourself.

you do risk to end up in a endless loop of your own making.


I wish you a merry christmas.



On 12/24/13 09:29, Chris Down wrote:
> On 2013-12-24 09:25:05 +0100, rens wrote:
> > *read is a built in. there is no  subshell.
>      $ echo "$BASHPID"; : | echo "$BASHPID"
>      26269
>      26271
>
> > any way, it seems then to me that even IF "read" was a subshell, the scope
> > of that would start and end with the read statement.
> I don't know why you think that.
>
> > thus, magically read in the subshell  is making while a part of it's own
> > shell ???
> No, the pipe is.
>
> > there is no "while|read"  command, you see.....
> >
> > so "while"  also invokes a shell ? that magically can do which you think is
> > not possible ??
> > because it is then the parent, not a child, evidently ?
> >
> > please explain......
> The pipe creates the subshell.
>
> > there  is no read command in my path.
> >
> > so, with that out of the way, what is your comment ?
> What does `read` have to do with anything?