Tmux For Mac
System administrators often need to work on multiple consoles and thus they appreciate the ability to switch from one to another in a snap with a quick keyboard shortcut or mouse click.
On my linux machines, for my terminal shell I have tmux keys mapped to allow me to split windows and then switch between new panes. With or without these mappings I can't figure out how to remap the key combo's on my mac that let me divide the terminal window and stay in whatever directory I'm currently in, for the new window. Tmux supports Alt+key (Meta+key) by prefixing the key with M-, or Ctrl+key with the C-prefix in the key binding specification. There is no support for any other modifier keys. There is no support for any other modifier keys. Mar 28, 2019 Popular Alternatives to tmux for Mac. Explore 4 Mac apps like tmux, all suggested and ranked by the AlternativeTo user community. Latest shortcuts, quick reference, examples for tmux terminal multiplexer which runs on Linux, OS X, OpenBSD, FreeBSD, NetBSD, etc.
Tmux Manage Multiple Linux Terminals Inside Single Console
To do this, in GNOME-based desktop Linux distributions you can install a tool called Terminator, which provides an efficient way of splitting a single window into multiple terminals for different tasks.
Nov 01, 2017 In this video we will learn how to install tmux on Windows or Linux or MacOS operating system. For installing tmux on MacOs - brew install tmux ( brew is a package manger for MacOS ) Linux. Let's up our game and get Tmux into the mix. We can use Tmux to open up multiple 'panes' within our shell. First, install it. On your Mac, you can use Homebrew: $ brew install tmux. Ubuntu or Debian users can user apt-get: $ sudo apt-get install tmux. Now, colors are also an issue when running Vim within Tmux. Let's fix that. The tmux Prefix Key; Some Nice Custom tmux Key Bindings; Terminal Emulators. One key feature I look for in Mac/Windows terminal emulators is the ability to create custom keybindings/macros. Ideally, the keybind system can send multiple key chords in series, so that I can combine tmux.
However, there are other options that you will need to consider, specially if you’re in front of a CLI-only server or if the X Windows System has crashed in your desktop distribution. Additionally, certification programs such as the Linux Foundation Certified System administrator, the Linux Foundation Certified Engineer only provide a command line interface for their respective exams.
In this article we will introduce you to tmux (short for Terminal MUltipleXer), a simple and modern alternative to the well-known GNU screen utility, and will enable you to access and control a number of terminals (or windows) from a single terminal. This tool will work both in a CLI-only environment and within a terminal emulator in a desktop distribution.
In addition, being able to create multiple tmux sessions can help you organize your work into different areas to increase your productivity.
Update: Here is another article about wemux, that improves tmux to make multi-user terminal easier and more powerful. It enables users to start a new wemux server and have other users join in either, read more about it:
Installing tmux Terminal Multiplexer in Linux
To install tmux, you can use your standard package management system.
For CentOS/RHEL/Fedora (included in the base repository):
Debian (from the admin packages section of the stable version) and derivatives:
Once you have installed tmux, let’s take a look at what it has to offer.
Getting Started with tmux Terminal Multiplexer
To start a new tmux session (a container for individual consoles being managed by tmux) named dev, type:
At the bottom of the screen you will see an indicator of the session you’re currently in:
Next, you can:
- divide the terminal into as many panes as you want with
Ctrl+b+'to split horizontally andCtrl+b+%to split vertically. Each pane will represent a separate console. - move from one to another with
Ctrl+b+left,+up,+right, or+downkeyboard arrow, to move in the same direction. - resize a pane, by holding
Ctrl+bwhile you press one of the keyboard arrows in the direction where you want to move the boundaries of the active pane. - show the current time inside the active pane by pressing
Ctrl+b+t. - close a pane, by placing the cursor inside the pane that you want to remove and pressing
Ctrl+b+x. You will be prompted to confirm this operation. - detach from the current session (thus returning to the regular terminal) by pressing
Ctrl+b+d. - create a new session named admin with
- detach from the session named admin
- reattach to the session named dev with
- Switch to admin again with
All the examples above are illustrated in the following screencast. Please take a minute to watch it and practice before proceeding:
Note that when there are no more panes left in a tmux session, such session is terminated.
Changing tmux Terminal Key Bindings
In tmux, the combination of keys used to perform a certain action is called key bindings. By default, key bindings consists of a combination of the Ctrl key and other(s) key(s), as we explained in the previous section.
If you find the default key bindings used in the preceding examples inconvenient, you can change it and customize it on either 1) a per-user basis (by creating a file named .tmux.conf inside each user’s home directory – do not omit the leading dot in the filename) or 2) system-wide (through /etc/tmux.conf, not present by default).
If both methods are used, the system-wide configuration is overridden by each user’s preferences.
For example, let’s say you want to use Alt+a instead of Ctrl+b, insert the following contents in one of the files mentioned earlier as needed:
After saving changes and restarting tmux, you will be able to use Alt+a+' and Alt+a+t to split the window horizontally and to show the current time inside the active pane, respectively.
The man page of tmux provides additional details and further suggestions for convenient key bindings that I’m sure you’ll find interesting to try.
Summary
In this article we have explained how to use tmux to divide your terminal or console window into multiple panes that you can use for different purposes.
I hope you have found this tool useful (actually, I’d love to hear that!), feel free to drop us a line using the form below. Do the same if you have any comments, questions or suggestions about this article.
Reference: https://tmux.github.io/
Learn more on ruby with our tutorial Setting Up Automated Testing with RSpec on SitePoint.
A few times a year, I find something that transforms or enhances my development environment. Examples in the past few years are: Github , vim, and zsh (more specifically, on-my-zsh .)
Sometime in the last year or so, I started using another development transformer: Tmux . What is tmux? According to its site:
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. And do a lot more.
I first learned about tmux from Evan Light (@elight) when I engaged him topair program with me eons ago. I was stunned at how easy tmux made it for Evan and I to collaborate in real-time. My reaction was a bit like an unfrozen caveman. I marvelled at the technology, presuming only advanced beings, like Evan, could wield such power. I put it on my “Someday” list and went back to my stone tablets.
In all likelihood, you’ve probably already heard of tmux. However, you may not be using it everyday. If tmux is on your “Someday” list because you think it is too complicated (I mean, c’mon, the word “multiplexer” is just plain scary), then I am here to show you just how easy it is to put tmux into your workflow.
Simple Install
To start, you’ll need tmux (DERP). Depending on your platform, there are various (easy) ways to perform the install:
Mac OSX
Use Homebrew. brew install tmux and you’re done.
Ubuntu/Debian
There is a Ubuntu package so, sudo apt-get install tmux will work, but the installed package is 1.7 and we really want 1.8. To get 1.8, do the following (thanks to this article):
It is not a huge deal if you cannot get 1.8 or don’t want to go through adding a PPA. You’ll just miss out on one of the cool features added in 1.8, which I will explain later.
Windows
No dice, unless you use Cygwin or install a VM with a *nix distrubution and then follow the instructions for Ubuntu.
Type the following to make sure all is well.
Hurray! tmux is installed!
Simple Usage
Using tmux is as easy as typing tmux. When you do that, it just looks like your screen clears and you’re back at the same terminal prompt. A bit anti-climatic, maybe, but you’ve just stepped through the looking glass.
The more observant among you will notice that the terminal how has a green bar along the bottom.
If you are thinking that this is a status line for tmux, you’d be right. Right now, it tells me the date, time, the host, what “windows” are open (just 1 named “0:bash”), and the name of the session (“0”).
When you start tmux with no arguments, it names the session using a zero-based list that increments by one for every current tmux session. As you might have guessed, you can name your sessions whatever you like, but we won’t get into that today.
The status bar can also be configured to display more information, use different colors, and many (MANY) other things. In this article, however, we are only going to focus on windows and panes.
No Pane, No Gain
I’ve already mentioned words like “session”, “window”, and “pane”. When you run tmux, it creates a new tmux session. A tmux session is, put simply, and container for windows and panes. A window contains one or more panes.
Each pane and each window are a virtual terminal, it just happens to be that windows can contain panes. Panes and windows can swap places, as well, so a pane can be made a window and window can be made a pane.
When starting life with tmux, I’d recommend you split your terminal into 1-3 panes for an “edit” window, and run other processes (like a rails console or tailing a log file) in their own windows. That is what we will walkthough today.
Windows into Your Application
Let’s do this. Fire up a terminal and cd into the root of your application. I am using a Rails app here, but that is not important.
Now, type tmux.
This is the first window, which will be the “edit” window for our session. I want to see the editor, my tests, and what top(1) has to say about current affairs. Split the current window into two panes by typing:
Whoa! That key-combination is a bit cryptic, no? It is, but that’s OK. Learning the tmux commands is no different than learning anything else, and they can be easily changed.
It is worth noting,however, that the CTRL+B portion of that macro is called “the prefix”. CTRL+B is the default prefix for tmux, but you won’t be surprised to know that most people change it.
Your terminal should now look like:
Now, we want to split the right-hand pane into 2 panes that are stacked vertically. Your cursor should be in the right-side pane. Type:
and your terminal should look like:
With the panes setup, the commands for each pane need to be launched. Since your cursor is now in the bottom, right-side pane, type top and watch top fire up. OK, switch to the top, right-side pane and type a command. For me, I’ll use rake test, but I would generally make this pane run the automated tests using guard or something similar.
Before you can do that, though, you need to know how to switch panes, don’t you? To move from the bottom, right-side pane to the top, right-side pane:
Same prefix, new suffix to the command. This one makes a bit more sense; to move up, use the up-arrow. Now type the command to fire up your tests.
Can you figure out how to move to the left-side pane? Once you do, launch your editor. I use VIM, so I type vim.
Here is my edit pane:
OK, the edit pane is done. Pro tip: If you are using tmux 1.8, you can toggle the curent pane into full-screen by typing:
I LUUUUUV this feature, because it means I can full-screen my tests when they are failing and navigate around that pane more easily, then return it to its original size when done.
Quickly now, I’ll show you how to add a window so you can fire up other services related to your app in the tmux session. To add a new window:
You are now in a pane-free (HA!) terminal and the status bar shows two windows (0 and 1). Fire up the rails console or whatever you like here.
Add as many windows as you like using that same key combination. When you want to switch between windows 0 and 1, type:
where is 0 or 1.
Now you can jump back and forth at your heart’s consent.
The End is Near
The last thing I’ll mention is how you detach from and end a session. When you are in a session, you are “attached” to it. The tmux command creates a new session and attaches the current terminal. To detach, type:
You’ll see something like [detached] and you’ll be back at your no-status-bar, regular, old terminal. If you type tmux ls, you will see a list of sessions:
All the stuff you had running in that session is still cruising right along. You can reattach to it by typing:
where -t stands for “target” and 0 is the session name. Now, go ahead and detach again.
To end/kill the session, type
Tmux For Mac Windows 10
This will end the session, so if you do another tmux ls, you will see zero sessions running. By the way, if you exit out of all the windows in a session, the session will exit as well.
Next Steps
This article just skims the surface of what tmux can do for you. However, you can apply what you learned today and be more productive in your development environment without investing another second of time learning about tmux.
Iterm2 Scroll
But, you aren’t that kind of person, are you? Once you get comfy with what you’ve learned here, this is what I recommend you do next:
- Buy the Tmux Book and read it. It’s great.
- Create your .tmux.conf file and start changing tmux to suit your needs. There are LOADS of examples and it makes tmux even better.
- Check out tmuxinator for setting up named tmux environments that fire up a bunch of panes and windows in a new session with a simple command.
- Pair program with someone using tmux as the way to collaborate in real-time. It’s mind-blowing.
Wrap Up
The goal of this article was to get you going with tmux in as simple a way as possible. I am now at the point where I start tmux up to do just about everything. I love convenience of splitting a window into panes and running a quick command without leaving my current window. I think you’ll find it just as useful.
Tmux Mac Terminal
Learn more on ruby with our tutorial Setting Up Automated Testing with RSpec on SitePoint.