[kwlug-disc] bash: HISTTIMEFORMAT

[Jason Eckert]

Like Raymond, the 'history -i' command has been my go-to for ages.
I switched to zsh long ago for aesthetic consistency... it matches zfs,
zswap, etc… I’m nothing if not alphabetically aligned.

On Wed, 4 Mar 2026 at 08:52, Raymond Chen <raymondchen625 at gmail.com> wrote:

> Very nice! BTW, in zsh it's `history -i`.
>
> On Wed, Mar 4, 2026 at 8:37 AM CrankyOldBugger <crankyoldbugger at gmail.com>
> wrote:
>
>> Nice one!
>>
>> On Wed, 4 Mar 2026 at 03:11, Chris Frey <cdfrey at foursquare.net> wrote:
>>
>>> It turns out that by setting the environment variable HISTTIMEFORMAT
>>> on startup to something like "%Y-%m-%dT%T " bash will both display
>>> the timestamp of all commands when you use the 'history' command,
>>> but also store the timestamps in the .bash_history file.
>>>
>>> Now I have an automatic trail of timed breadcrumbs in case I need it,
>>> for all my shell work.
>>>
>>> Just passing along the tip.
>>>
>>> - Chris
>>>
>>>
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