Re: Parallelism a la make -j <n> / GNU parallel

[Chet Ramey]

On 5/3/12 2:49 PM, Colin McEwan wrote:

> What I would really *like* would be an extension to the shell which
> implements the same sort of parallelism-limiting / 'process pooling' found
> in make or 'parallel' via an operator in the shell language, similar to '&'
> which has semantics of *possibly* continuing asynchronously (like '&') if
> system resources allow, or waiting for the process to complete (';').

I think the combination of asynchronous jobs and `wait' provides most of
what you need.  The already-posted alternatives look like a good start to a
general solution.

If those aren't general enough, how would you specify the behavior of a
shell primitive -- operator or builtin -- that does what you want?

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