[kwlug-disc] bash: HISTTIMEFORMAT

[Raymond Chen]

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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