strange results of history command list

[AV]

This is on fedora 40, a fresh 'everything' network install.
I always update/upgrade manually using 'sudo dnf --refresh upgrade'.
To save typing I would scroll through the command history using the
arrow keys.
But 'sudo dnf --refresh upgrade' is no longer listed!
All other commands I used are still listed, but not this one.
Can somebody explain?

AV

[Joe Wulf]

It truly depends on how the default management of bash history is set up in the virgin environment.Variables like HISTCONTROL, HISTIGNORE can play a part.  The setting for 'shopt -s histappend' also matters.The BASH man page briefly explains them.
R,-Joe

On Tuesday, June 4, 2024 at 12:17:41 PM EDT, AV via users  wrote:

This is on fedora 40, a fresh 'everything' network install.
I always update/upgrade manually using 'sudo dnf --refresh upgrade'.
To save typing I would scroll through the command history using the
arrow keys.
But 'sudo dnf --refresh upgrade' is no longer listed!
All other commands I used are still listed, but not this one.
Can somebody explain?

AV
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[Roger Heflin]

If you have 2 separate sessions open for the given user last save/exit
wins and overwrites the history file.  This may be an
oversimplification but 2 sessions both saving out do seem to make a
mess.

And if there is no -TERM and/or clean exit then nothing gets written out.

I have trained people on root cause analysis for system events/crashes
and I have always told them that if you do not find something in the
history that does not mean that a command was not typed.

On Tue, Jun 4, 2024 at 11:17 AM AV via users
 wrote:
> This is on fedora 40, a fresh 'everything' network install.
> I always update/upgrade manually using 'sudo dnf --refresh upgrade'.
> To save typing I would scroll through the command history using the
> arrow keys.
> But 'sudo dnf --refresh upgrade' is no longer listed!
> All other commands I used are still listed, but not this one.
> Can somebody explain?
> AV
>
> users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]
> Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
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