The history is shared between my iTerm2 terminal tabs: how can I switch that off?

Question

I am using iTerm2 (with zsh), and for some reason the history is shared between the different tabs and windows that are open. In most of the cases for me, this is annoying, since I have tabs per specific task, and if I have to redo some commands, I just want to be able to go back (up) in history to retrieve the last action for that window/tab only.

I have no idea how to disable this shared history, I read somewhere that you can enable shared history in zsh, but afaik I have done no such thing.

Can anybody point me in the right direction?

score 49 · Accepted Answer · answered Dec 21 '12 at 10:36

49

Executing the following should do the trick (use setopt to reenable them):

unsetopt inc_append_history
unsetopt share_history

answered Dec 21 '12 at 10:36

Gerry

14,551

3

Do I add these to my .zshrc? – nathanvda Dec 21 '12 at 11:04
1

and with bash??? – nkint Jan 22 '13 at 21:31
3

@nathanvda yep, you add this to .zshrc. – Aram Kocharyan Jan 27 '15 at 03:00
1

What about bash shell? – A.D Jul 14 '16 at 16:03
@Adi you can either add it to your .bashrc or your .bash_profile. – VarunAgrawal Aug 11 '16 at 00:17
4

I am getting -bash: unsetopt: command not found. Is it possible that this is something tmux related? Afaik I am not using tmux, but I am still experiencing the same problem as OP – TabeaKischka Oct 18 '16 at 16:26
The question and this answer are specific to zsh. I don't think there is an equivalent fix for Bash. – tripleee Mar 31 '17 at 08:51
@TabeaKischka : unsetopt is not a builtin bash command. It does not make sense to execute zsh code in bash. You wouldn't run Perl code in Java either, would you? – user1934428 Feb 09 '24 at 09:27

Eugene Maysyuk · Answer 2 · 2024-02-08T22:54:08.050

For me above mentioned commands didn't work.

I am using plain ZSH, not Oh-my-zsh.

Here's what worked for me (./zshrc):

export HISTFILE="$HOME/.zsh_sessions/history_$TERM_SESSION_ID" # use a different histfile per shell
setopt INC_APPEND_HISTORY # new history lines are added to the file as soon as they are entered (not after terminal is closed)
if [ ! -e $HISTFILE ]; then cp "$HOME/.zsh_sessions/$(ls -Art $HOME/.zsh_sessions | tail -n 1)" "$HISTFILE"; fi # for new shells, initialize history with the history of the most recently used shell

The history is shared between my iTerm2 terminal tabs: how can I switch that off?

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