On Friday, October 9, 2015 at 8:34:19 PM UTC-4, Bill Hart wrote:
>
> indicates that withenv can also be used with a do..end block. However, try
> as I might, I cannot figure out how to do anything with this. Can someone
> provide an example of this in operation.
>
julia> *withenv("FOO"=>"bar") do*
* run(`bash -c "echo FOO is \$FOO"`)*
* end*
FOO is bar
>
> Whilst I'm asking trivial questions, I may as well also ask this related
> one.
>
> If I do:
>
> run(`echo \$PATH`)
>
The $FOO syntax is a feature of the shell, not of /bin/echo. When you
run(`echo ...args...`) you are executing /bin/echo directly, without
involving the shell, so no shell expansions like * patterns or $variables
are performed.
If you want to use the $FOO syntax, you need to invoke the shell, as in my
example above where I invoked bash.
>
