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Wed, 05 Oct 2022 15:50:55 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Bart Schaefer Date: Wed, 5 Oct 2022 15:50:43 -0700 Message-ID: Subject: Re: SSD-friendly history To: dominik.vogt@gmx.de, Zsh Users Content-Type: text/plain; charset="UTF-8" X-Seq: 28182 Archived-At: X-Loop: zsh-users@zsh.org Errors-To: zsh-users-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-users-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: On Wed, Oct 5, 2022 at 2:34 PM Dominik Vogt wrote: > > I'd really like to have a mechanism that appends to the history > until some maximum size is reached and then truncates it to some > much smaller size Setting INC_APPEND_HISTORY will cause the file to be rewritten only when it reaches 20% larger than SAVEHIST. There's no option to make that greater than 20% at this point. However, this would be a reason to make SAVEHIST a lot larger than HISTSIZE. If you don't mind using size-in-bytes instead of size-in-lines, you could then add a fast check to .zlogout to set SAVEHIST=$HISTSIZE whenever $HISTFILE is large enough. (( $(zstat +size $HISTFILE) > 2000000 )) && SAVEHIST=$HISTSIZE or similar.