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CoCalc Logo Icon
JupyterJuliaLaTeXLinuxOctavePythonR StatsSageMathSlidesTeachingTerminalWhiteboardX11ComputeAI AssistantCompareAPI
echo 'Welcome to CoCalc from Linux/BASH!'
Online Linux Terminal logo

Online Linux Terminal

Running Sage in a Terminal

A Linux Terminal that can't mess up your own computer.

Full Linux Terminal

CoCalc offers a full, collaborative, real-time synchronized Linux Command Line Terminal in your browser.
Take a look at our terminal documentation to learn more about it!
Browse the installed software in CoCalc.
CoCalc is made for teaching a course: students just have to sign in to get started!

Benefits of working 100% online

  • You no longer have to install and maintain any software.
  • It is possible for multiple people to collaboratively use the same terminal in realtime.
  • You can also edit and run shell script files.
  • Use chat next to the Terminal to discuss your commands with others.
  • Automatic backup keeps your files safe!
  • You can copy and paste between your local desktop and the online terminal.

What you can do ...

  • Learn Bash scripting
  • Learn how to use the Linux command line
  • Run scripts written in Python, R, PHP, Ruby, Go, Perl, Nodejs etc.
  • Compile programs written in C/C++, Java, Rust, Assembly, Fortran, Julia, Zig, Haskell, etc.
  • Process and store datafiles
  • Collaborate
  • Use graphical X11 applications

... what you cannot do.

  • Root: due to how CoCalc works, you cannot have root rights. However, there is a wealth of software already installed, including both system utilities and packages for specific language environments. Regarding Python, R, Nodejs, and Julia environments, you can install additional packages in your project. If something is missing, please tell us.
  • Communicate with the Internet without buying a license: if you want to run code to download data from another server or checkout a Git repository – or just want to support CoCalc – you need a license applied to your project. Learn more about the Trial Projects that you can use for free.
  • Port forwards: you cannot forward arbitrary ports over ssh to your local computer. (You CAN ssh into your project.)
Ready out of the box: Sign up, create a project, create or upload your *.sh file, and you're ready to go!
Start free today. Upgrade later.

Feature Overview

There are many ways to use a Linux Terminal online via CoCalc.

Realtime collaboration

Video showing synchronized terminals
The same terminal can be opened by two or more users. Both see the same view, which adaptively resizes to a common size.
Additionally, open a side chat panel to exchange thoughts and ideas.
This is ideal for getting advice by a colleague or helping a student of yours.

Run Bash, Python, R, etc.

Screenshot of editing and running a shell script

Bash file (left), bash -f to run (right)
CoCalc's frame editor supports editing script files side-by-side with a terminal.
To get started, create a file with a suitable ending, e.g. .py, .sh, .r, ... Then open that file (via open filename.ext) and you can edit it with syntax highlighting. Finally, split the frame and select the Terminal, like you can see it in the screenshot. Execute python3, bash -f, ... to run it.

Comprehensive software stack

Terminals software

Linux Terminals using vim, emacs, clang, mysql, cpp, maxim and zsh!
Many popular applications are included in CoCalc: Git to interact with GitHub, VIM, Emacs, various programming shells like IPython, R, Octave and SageMath.
There is also support for many programming languages and compilers. Python, JAVA, C/C++ via GCC and Clang, Zig, Ada, Haskell, Smalltalk, Rust and many more.
Look at our list of executables to check what is available!

Snapshot backups

Browsing filesystem snapshots in a CoCalc project
Snapshots are consistent read-only views of all your files in a CoCalc project. You can restore your files by copying back any that you accidentally deleted or corrupted.

Terminals in CoCalc versus the competition

GCE/AWS/Azure Clouds
Free access for unlimited time
Limited trial with credit card
Full Linux
Compute servers provide full root access to a dedicated virtual machine and ability to run any Docker containers.
Count of of pre-installed packages, by running 'apt list --installed | wc -l' or 'rpm -qa | wc -l'
~ 9500
~ 200

~ 700
Periodic backups of your data
Persistence of your data
Ease of setup and configuration


Very Easy

Root access
Start free today. Upgrade later.