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From: Sebastian Gniazdowski <sgniazdowski@gmail.com>
To: "Lawrence Velázquez" <vq@larryv.me>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: How to detect that Zsh startup is result of exec zsh?
Date: Thu, 15 Sep 2016 20:02:14 +0200	[thread overview]
Message-ID: <CAKc7PVByC8zM9wTw-JDiPu=ZkaewAMEOMqC6w6F6hiLFA0LrUw@mail.gmail.com> (raw)
In-Reply-To: <F7A8408E-B194-4472-B54D-913374398462@larryv.me>

On 15 September 2016 at 19:54, Lawrence Velázquez <vq@larryv.me> wrote:
> You're not actually using any subshells.
>
> % zsh --version
> zsh 5.2 (x86_64-apple-darwin15.6.0)
> % typeset ZSH_SUBSHELL
> ZSH_SUBSHELL=0
> % (typeset ZSH_SUBSHELL)
> ZSH_SUBSHELL=1
> % ( (typeset ZSH_SUBSHELL) )
> ZSH_SUBSHELL=2
> % zmodload zsh/system
> % (( $$ == $sysparams[pid] )); echo $?
> 0
> % ( (( $$ == $sysparams[pid] )); echo $?)
> 1


OK, so this works, but cannot be used to differentiate % exec zsh from
% zsh, however now as I thought about it, it's easy:

% export MYSHLVL=$SHLVL
% zsh
% echo $SHLVL $MYSHLVL
3 2
% exit
% exec zsh
% echo $SHLVL $MYSHLVL
2 2

Best regards,
Sebastian Gniazdowski


      reply	other threads:[~2016-09-15 19:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20160913122504eucas1p121867b112b7f08e125a324230d8296df@eucas1p1.samsung.com>
2016-09-13 12:23 ` Sebastian Gniazdowski
2016-09-13 13:06   ` Peter Stephenson
2016-09-13 13:19     ` Sebastian Gniazdowski
2016-09-13 13:30       ` Peter Stephenson
2016-09-15  6:31         ` Sebastian Gniazdowski
2016-09-15 17:54           ` Lawrence Velázquez
2016-09-15 18:02             ` Sebastian Gniazdowski [this message]

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