Run Script

Run a script using various shells.

Spawns a child process of the shell and executes the script in it.

Inputs

Port	Description
Shell	The shell to use to run the script. Check the addendum below for more information.
Script	The script to run.
Args	Arguments to pass to the script.
Stdin	Stream to pass to the scripts stdin.
Print	Option to capture the print to the stdout, to the output of the node or both.
Environment Vars	Environment variables to pass to the script.

Outputs

Port	Description
Success
Error
Output
Exit Code

Addendum

Python

Python is a high-level, interpreted programming language that is widely used for general-purpose programming. It is available by default on most systems. Python scripts can be run using the python command.

In order to determine which Python installation is used, actrun will first look for an executable named python3 and then python. Any subsequent node run with this shell will use the same Python interpreter, no matter if the PATH environment variable changes after the first Run node is executed. If no Python installation is found, the node will fail with an error message.

In order to use a specific Python version, it is recommended to use the Run Executable node with the full path to the Python executable.

If you need to install a specific Python version, check out the Python Downloads page.

How to print a hello world

print("Hello, World!")

Bash

Bash s available by default on Linux and macOS systems. Bash (bash.exe) isn’t included by default on Windows.

Bash for Windows

There are multiple ways to install Bash on Windows. Once you install one of the packages below, actrun can use it to run scripts.

After the installation of a package below, you might need to restart your terminal or process in order for actrun picking up the new location of the Bash shell.

• MinGW: A native Windows port of the GNU Compiler Collection. It includes a Bash shell.

• Msys2: A collection of tools and libraries providing a Unix-like environment on Windows. It includes a Bash shell.

• Git for Windows While we don’t need really Git for actrun, it comes with a Bash shell that we can use.

• Cygwin: An extensive collection of tools from the Unix world, including a Bash shell, that can be run on Windows. Should only be used if you need more than just a Bash shell.

Note

For the experts amongst you, there is also Windows Subsystem for Linux (WSL). But this node doesn’t support the WSL Bash, even if it’s the only one available. Starting up an inactive WSL Linux just to use the Bash can slow down your action graph too much. If you really want to use WSL, it’s better to run wsl.exe yourself via the Run Executable node.

How to print a hello world

echo "Hello, World!"

Powershell Core (aka pwsh)

Powershell is a shell originally developed by Microsoft for task automation and configuration management. The first 5 versions were simply called Windows PowerShell powershell.exe and the latest one is available by default on Windows systems.

The newer version v6 and higher is called PowerShell Core (pwsh.exe) and needs to be installed manually, on Linux, macOS and for some reason even on Windows 🤷‍♂️.

Pwsh for Windows

To use PowerShell Core on Windows, you can download it from GitHub Releases or via the unnecessarily complicated installation procedure on Microsoft.com.

Alternatively just execute the two commands below in your terminal and you’re good to go.

winget search Microsoft.PowerShell
winget install --id Microsoft.PowerShell --source winget

How to print a hello world

Write-Host "Hello, World!"

Pwsh for macOS

To use PowerShell Core on Windows, you can download it from GitHub Releases or via the unnecessarily complicated installation procedure on Microsoft.com.

Pwsh for Linux

To use PowerShell Core on Linux, you can install via GitHub Releases or via the official installation manual here.

The easiest way is to install it via snap:

sudo snap install powershell --classic

How to print a hello world

Write-Host "Hello, World!"

ID: core/run@v1