I have a nice window in my tmux session that has a number of panes nicely arranged. Is it possible to duplicate a session, preserving the current panes layout?
Check out some of the tmux plugins. tmux-resurrect allows you to save then later restore a set of windows and even the commands running there (out of a limited set you can configure). You may want to start by first installing the Tmux Plugin Manager that it mentions in the guide if you want to easily try out other plugins.
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I use combination of zsh with oh-my-zsh and iTerm2 for development on Mac.
I'm frustrated with the following issue:
N tabs opened
close the terminal
reopen it (with Use system Window Restoration Setting)
the history from all previously opened tabs got merged into one for every reopened tab
The question: How to preserve separated history for every reopened tab?
Per https://github.com/robbyrussell/oh-my-zsh/issues/2537,
Add unsetopt share_history to your .zshrc file.
Unless iTerm2 actually just hides a tab on closing and keeps the shell session running in the background (which, according to the iTerm2 website, seems to be an option), it is not possible to completely restore a shell session. In your case It seems like a new shell session is created when restoring a tab, which leads to the history being read form HISTFILE.
If you want to prevent any merging of history, you have to ensure that of the options APPEND_HISTORY, INC_APPEND_HISTORY and SHARE_HISTORY only the first one is set:
setopt noincappendhistory
setopt nosharehistory
setopt appendhistory
This will lead to new entries in the history (i.e. commands run during the session) only being appended to the history file when the shell exits. So when you close a session, the next shell (re-)opened will have lines of the just previously closed shell on the bottom of the history.
Another option could be to have separate history files for each shell session and device your own method of loading a history from these files using the fc builtin. This would at least in part depend on whether it is possible to differentiate between iTerm2 tabs from within a shell session (for example via some environment variable) and whether this holds true when re-opening a tab.
Until recently I have been using bash with tmux. Bash was behaving as I would expect it to behave, where the history is preserved in each separate pane, and is not shared between panes. However it looks like in zsh the default is for the history in the panes is to be shared. Is there a way to overwrite the default in zsh so that they are not shared when using in tmux?
Tmux should have nothing to do with this, really. So let's focus on your Zsh setup.
You’d have to jump through some hoops to get history to be real-time shared among running Zshs, so it’s surprising that you’re seeing this. What settings have you made to control your Zsh history? Run this to see your settings:
setopt |grep hist
For not saving history immediately, you’ll want:
setopt noincappendhistory
setopt nosharehistory
You can put that into your ~/.zshrc. You may want to log out of running shells to ensure your new settings take place.
For info on all the history-related Zsh options, see man 1 zshoptions and look for the “History” section a few pages in. Note that there are also some environment variables that impact history (SAVEHISTORY, HISTFILE, HISTFILEIGNORE, HISTSIE, HISTFILESIZE).
I am using the latest stable version of iTerm2 (2.0) with the latest Homebrew build of tmux (1.9a). Unfortunately, my keybindings as declared in .tmux.conf do not work with the iTerm2/tmux combo in "integrated mode" (i.e. when iTerm2 takes over the management of tmux windows and panes). I tried different prefixes (C-b, M-a) as well as different key mappings in iTerm, but to no avail.
Is this indeed an iTerm bug? Or is my expectation that the .tmux.conf keybindings would be carried over to iTerm a false one? Even my tmux command prefix (M-a) does not work!
You may view my tmux configuration file at https://gist.github.com/453ab63c42df976bc2be.
Someone reported a similar bug at iTerm2 Tmux Integration Default Keybindings not working in 2015. The response from the developer George Nachman suggests that keybindings are not supported:
One of the main goals of the tmux integration is that you use iTerm2's
keystrokes, not tmux's. If there's a specific workflow that you can't
accomplish natively, let me know--there is a lot of power in the
ability to remap keys in iTerm2.
As of this change in iTerm2, you can now set a Leader key / prefix in the iTerm2 config which will forward to tmux. You still can't bring up the tmux command prompt, but you can create new windows, panes, etc, and my custom keybinds appear to be in working order.
You can configure the shortcut in Prefs > Keys > Key Bindings > Leader... Once you define a leader, the tmux key combos will become available. I recommend cmd-B as the leader for muscle memory and because cmd-B isn't otherwise in use.
This is what it should look like, note my prefix is the ` key but you should set this to whatever your tmux prefix binding is.
As of this writing the feature is only in the nightly build of iTerm2, so you'll be running alpha code, but assuming nothing goes wrong it should be included in the next stable release (or 3.5beta6).
edit: Ben's answer that this is unsupported is correct. My advice does not apply to "integrated mode".
Make sure you don't have conflicting key mappings in iTerm, that your option key is set to Meta, and that you've tmux source ~/.tmux.conf after your changes (the config is only loaded by the server, so you have to restart all sessions or re-source). Also, if you're using Karabiner or another hotkey remapper, it could be interfering in some way.
You're starting with a rather extensive config - I'd start with a one line config for testing purposes.
I'm using Tmux / Vim on Mac OSX and I like to split the windows for testing and development. I would like to know if its possible to dock safari or another browser inside a tmux window so I would have code on the left side and the browser on the right.
Cheers!
If you can make the browser show in your terminal, then the answer to your question is YES. otherwise: NO.
From tmux homepage:
tmux is a terminal multiplexer
What is a terminal multiplexer? It lets you switch easily between several
programs in one terminal, detach them (they keep running in the background) and
reattach them to a different terminal.
Notable web browsers you could actually use in the terminal are elinks, w3m or for a complete graphical interface, NetSurf.
I got tmuxinator to work with iTerm2 the following: https://stackoverflow.com/a/19747819/1009332
However, each tab initially opens in a different window. Is there any way to attach to an existing tmux session using tabs rather than new windows?
There's some more info about this cool feature here: https://code.google.com/p/iterm2/wiki/TmuxIntegration
My motivation for this was:
1. copy/paste/find locks the process in tmux, whereas with iterm2, you can find in a tail of logs and not lock the process.
2. key bindings are simpler in iTerm2.
3. I like tmuxinator to start many shell windows (tabs) when doing rails web development, so that my stdout of different processes goes to different windows, rather than mixing together when using foreman.
It is an option in iTerm2: Preferences > general Open tmux windows as native tabs in a new window, but you have to disconnect then reconnect.
Solution found here