On 4/11/13 9:24 AM, Dan Douglas wrote:
> On Thursday, April 11, 2013 01:05:43 PM Lenga, Yair wrote:
>> With BASH 3.0, the backgrounded task could access the PID of the parent using
>> "$$", and the PID Of itself as "$!".
>>
>> With BASH 4.0, the script fail, the "$!" is not available to the child
>> process.
>>
>> Is it possible to add back the functionality to allow the child process to
>> somehow retrieve it's OWN PID. I assume that the behavior of "$$" cannot be
>> modified at this time.
>
> BASHPID was introduced in Bash 4. I would guess that prior to that, the
> behavior of $! was either a nonstandard extension or unintentional bug. Check
> the changelog.
According to the change log, I made this change in late November 2006 as
the result of a shell discussion on the austin-group list. BASHPID came
in to replace it shortly after.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/
