Re: using exec to close a fd in a var crashes bash

[Greg Wooledge]

On Sat, Aug 19, 2023 at 01:37:31PM -0400, jleivent wrote:
> Repeat-By:
>         
>       exec {foo}>/tmp/foo
>       exec "${foo}"<&-
Remove the quotes and the $ and it should work.

    exec {foo}<&-

The way you've got it is essentially:

    exec "$foo" <&-

This does't make bash "crash".  It's simply exec-ing a nonexistent
program.