On 6/23/21 6:24 AM, Chet Ramey wrote:
On 6/22/21 9:54 PM, Martin Jambon wrote:
In the posix definition, a subshell
- is not necessarily implemented as a separate process
- belongs to a unique shell
- is not a shell
Why is it not "a shell?"
Because '$$' doesn't mat
On 6/22/21 6:11 PM, Lawrence Velázquez wrote:
On Tue, Jun 22, 2021, at 8:52 PM, Martin Jambon wrote:
It's better. However, the reader is still left wondering what "the
shell" is referring to in first sentence.
Subshells aside, I have a hard time believing that "the pro
On 6/22/21 5:00 PM, Lawrence Velázquez wrote:
Maybe something like this would get the point across:
($$) Expands to the process ID of the shell. In a subshell,
it expands to the value that $$ has in the invoking shell.
It's better. However, the reader is still left wonder
On 6/22/21 1:37 PM, Greg Wooledge wrote:
On Tue, Jun 22, 2021 at 01:12:10PM -0700, Martin Jambon wrote:
On 6/22/21 4:31 AM, Greg Wooledge wrote:
A pipeline creates two or more subshells, one for each command in the
pipeline. Therefore, your wait command is running in a different
process than
On 6/22/21 4:31 AM, Greg Wooledge wrote:
On Tue, Jun 22, 2021 at 02:42:40AM -0700, Martin Jambon wrote:
I ran into something that looks like a bug to me, although I'm not super
familiar curly-brace command groups.
Bash version: latest from GitHub mirror (commit ce23728: Bash-5.1 pa
On 6/22/21 6:15 AM, Chet Ramey wrote:
On 6/22/21 5:42 AM, Martin Jambon wrote:
Hello!
I ran into something that looks like a bug to me, although I'm not
super familiar curly-brace command groups.
It's not the brace command; it's the pipeline.
Thank you! It's the $$ th
Hello!
I ran into something that looks like a bug to me, although I'm not super
familiar curly-brace command groups.
Bash version: latest from GitHub mirror (commit ce23728: Bash-5.1 patch 7)
Minimal repro:
$ sleep 1 & { wait $!; } | cat
[1] 665454
bash: wait: pid 665454 is not a child
