Hello Dr. Sauermann,

I do not understand the "--id 1010" you are adding.

Blake

On Mon, Mar 9, 2026 at 12:42 PM Dr. Jürgen Sauermann <
mail@jürgen-sauermann.de> wrote:

> Hi Blake,
>
> I see, thanks.
>
> However that method seems to have undesirable side effects.
>
> For example the *tty* of the shell that starts a script is messed up.
> And the interpreter ID is is not properly unregistered.
>
> My script is:
>
>
>
>
>
> * #!/usr/bin/env -S apl "--script --id 1010"       ⊃⎕ARG      ⍝ show
> command line options       )OFF      ⍝ leave the interpreter *
> and executing it twice gives:
>
>
>
>
>
>
>
>
>
>
> *eedjsa@server68:~/apl-1.9/workspaces$
> <eedjsa@server68:~/apl-1.9/workspaces$> ./SCRIPT.apl  apl
> --script     --id         1010         ./SCRIPT.apl
> eedjsa@server68:~/apl-1.9/workspaces$
> <eedjsa@server68:~/apl-1.9/workspaces$> ./SCRIPT.apl  *** Another APL
> interpreter with --id 1010 is already running
> eedjsa@server68:~/apl-1.9/workspaces$
> <eedjsa@server68:~/apl-1.9/workspaces$> *
>
> Best regards,
> Jürgen
>
>
> On 3/9/26 11:41, Blake McBride wrote:
>
> Greetings,
>
> APL scripts start with:  #!/usr/local/bin/apl --script
>
> It is my understanding that that is not a portable way to start scripts.
>
> For maximum portability on a modern system, the following should be used
> instead:
> #!/usr/bin/env -S apl --script
>
> For maximum historical portability:
> #!/bin/sh
> exec apl --script "$0" "$@"
>
>
> Blake McBride
>
>
>
  • APL script sta... Blake McBride
    • Re: APL s... Dr . Jürgen Sauermann via Bugs and suggestions for GNU APL
      • Re: A... Blake McBride
        • R... Dr . Jürgen Sauermann via Bugs and suggestions for GNU APL
          • ... Dr . Jürgen Sauermann via Bugs and suggestions for GNU APL

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