From: Phil Pennock <zsh-workers+phil.pennock@spodhuis.org>
To: zsh-workers@zsh.org
Subject: Re: $PPID not updated when the PPID changes (parent killed)
Date: Mon, 17 May 2021 18:27:00 -0400 [thread overview]
Message-ID: <YKLttAsFd4bl9waS@fullerene.field.pennock-tech.net> (raw)
In-Reply-To: <CAH+w=7bhsp71vazSJ_9Un1btb4mrxBgUciUg4zfGv15LeUfT1g@mail.gmail.com>
On 2021-05-17 at 14:00 -0700, Bart Schaefer wrote:
> Still mulling over possible rewording (at the very least change "for"
> to "with" in that phrase). Suggestions that don't try to explain unix
> process hierarchy management in detail, are welcome.
PPID <S>
The initial parent process ID; that is, the process ID of the process
which created this shell process, at the time that it did so.
Just as for $$, the value is only set for the original shell and does
not dynamically change for implicit subshells (as created for (list)
and for pipelines).
I am unsure of the subshells to implicit subshells and the parenthetical
note. It's an attempt to be clearer that "if you run zsh within zsh,
that's not a subshell, sure _that_ gets $$ and $PPID reset".
-Phil
next prev parent reply other threads:[~2021-05-17 22:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-16 15:24 Vincent Lefevre
2021-05-16 18:37 ` Bart Schaefer
2021-05-17 20:26 ` Vincent Lefevre
2021-05-17 21:00 ` Bart Schaefer
2021-05-17 22:27 ` Phil Pennock [this message]
2021-05-17 23:15 ` Bart Schaefer
2021-05-18 0:30 ` Phil Pennock
2021-05-18 1:14 ` Bart Schaefer
2021-05-18 8:28 ` Vincent Lefevre
2021-05-18 8:15 ` Vincent Lefevre
2021-05-18 14:53 ` Bart Schaefer
2021-05-19 4:25 ` Bart Schaefer
2021-07-18 23:10 ` Lawrence Velázquez
2021-05-18 15:18 ` Mikael Magnusson
2021-05-18 16:14 ` Peter Stephenson
2021-05-18 18:20 ` Bart Schaefer
2021-05-18 17:37 ` Martijn Dekker
2021-05-18 18:08 ` Bart Schaefer
2021-05-18 19:40 ` Martijn Dekker
2021-05-18 18:06 ` Stephane Chazelas
2021-05-18 18:12 ` Bart Schaefer
2021-05-18 18:50 ` $SHLVL origin (was: $PPID not updated when the PPID changes (parent killed)) Stephane Chazelas
2021-05-18 15:56 ` $PPID not updated when the PPID changes (parent killed) Stephane Chazelas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YKLttAsFd4bl9waS@fullerene.field.pennock-tech.net \
--to=zsh-workers+phil.pennock@spodhuis.org \
--cc=zsh-workers@zsh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).