Re: Doesn't MY_ENV=abc printf "${MY_ENV}\n" suppose to print abc?

[iain d broadfoot <ibroadfo@cis.strath.ac.uk>]

* Shaul Karl (shaul@actcom.net.il) wrote:
> On Sat, Aug 02, 2003 at 10:22:19PM +0100, iain d broadfoot wrote:
> > * Shaul Karl (shaul@actcom.net.il) wrote:
> > > Package: bash
> > > Version: 2.05b-8.1
> > > 
> > >   According to my understanding of the manual page,
> > > 
> > >     $ MY_ENV=abc printf "${MY_ENV}\n"
> > > 
> > > Should have print abc. But it does not:
> > > 
> > >     $ MY_ENV=abc printf "${MY_ENV}\n"
> > > 
> > >     $
> > > 
> > > What am I missing?
> > 
> > an 'export' and a ';', like so:
> > 
> > $ export MY_ENV=abc ; printf "${MY_ENV}\n"
> > abc
> > 
> 
> 
>   Your proposal has some side effects which might be undesirable. More
> specifically, with your proposal MY_ENV will be set until you
> explicitly unset it or exit the shell. With what I tried to do, MY_ENV
> will only be set for the following command. There will be no need to
> explicitly unset it or exit the shell in order for it to disappear
> afterwards. In addition, the construct I am trying to use is a well
> known construct and the man page says it should work. Is it a bug?

i can't see in the man page an example like the one you show, what
section is it in?

>   Can you try on your machine the line that I have asked about and see
> if that is working for you? What version of bash are you using?

i get the same results as you.

the other respondent explained the reason for the (apparent) problem, i
think.

iain

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wh33, y1p33 3tc.

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