bash 5.0 on AIX 7.2 server -- Division by 0 when using bash from shell window

[Krongard, William T. (BLM)]

Greg,

Thank you, found the issue in "root" .profile, you were correct a '1' had been 
added to Prompt Command variable.


Respectfully,

William Krongard
Express Scripts Services, 
Server Support
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-----Original Message-----
From: Greg Wooledge <wooledg@eeg.ccf.org> 
Sent: Monday, June 29, 2020 4:32 PM
To: Krongard, William T. (BLM) <WTKrongard@express-scripts.com>
Cc: bug-bash@gnu.org
Subject: [EXTERNAL] Re: bash 5.0 on AIX 7.2 server -- Division by 0 when using 
bash from shell window

On Mon, Jun 29, 2020 at 08:24:01PM +0000, Krongard, William T. (BLM) wrote:
> Description:
>         execution of "bash" from shell window gets a division by zero 
> message # bash
> bash: (1-0/roothome1): division by 0 (error token is "roothome1)")
> bash: (1-0/roothome1): division by 0 (error token is "roothome1)")
> 
> every command executed is followed by the division by 0 message

This will be caused by something in your environment -- either the PS1 
variable, or the PROMPT_COMMAND variable, or a DEBUG trap, which is being set 
in one of root's dot files on your system.

Most probably, you've got $(( )) where you meant to have $( ), or something 
along those lines.  It'll probably be obvious once you print out the contents 
of the PS1 and PROMPT_COMMAND variables, and the output of "trap" with no 
arguments.