Re: [Help-bash] Waiting for a sub-process to finish

[Chet Ramey]

On 6/1/17 4:27 PM, Greg Wooledge wrote:

> Other than that, bash 4.4 added this new feature:
> 
> u.  Bash now allows waiting for the most recent process substitution, since it
>     appears as $!.
> 
> I believe you have to explicitly pass the PID to wait for those, rather
> than just calling wait with 0 arguments, but it's not something I've
> played with much.

It's always appeared as $!, and you can wait for it the same as any other
process. The changelog entry refers to wait without arguments, which is
supposed to wait for all background processes.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/