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The Blink platform enables running Python, Bash, PowerShell and Node.js scripts using the following actions:

Run Bash Script

Run Node.js Script

Run Python

Run PowerShell Command

These Actions are preserved between the different steps of the Workflow execution. For example: if you create a file using Python, you can use it in a later Step using any programming language or CLI.

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Run Bash Script

Execute a provided bash script.
If an error occurs in a command mid-script but the final command succeeds, the action will report success, potentially masking failed commands.
  1. Start by setting up a Working Directory using the Create Working Directory action.
  2. Next, write your bash script in the code block provided within the ‘Run Bash Script’ action.
  3. Finally, in the ‘Working Directory’ parameter of the ‘Run Bash Script’ action, enter the name of the Working Directory you created in step one.
NoteIf there’s an error in a command in the middle of the script and the last command succeeds, the entire action will succeed, not revealing that some command may have failed.
ParameterDescription
CodeThe bash script to execute.
Working DirectoryWhen a working directory is selected, the filesystem state is preserved across steps that use this directory. Files and changes in the chosen directory persist across steps, ensuring continuity.

For more information, refer to the Create Working Directory action documentation for guidance on setting up and selecting working directories.
Prerequisite PackagesA space-separated list of packages to install before executing the script.

For example:
curl jq tree

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Run Node.js Script

Executes user provided JS code.
  1. Start by setting up a Working Directory using the Create Working Directory action.
  2. Next, write your Node.js script in the code block provided within the ‘Run Node.js Script’ action.
  3. Finally, in the ‘Working Directory’ parameter of the ‘Run Node.js Script’ action, enter the name of the Working Directory you created in step one.
ParameterDescription
CodeJS code to execute in the script.
Advanced- Working DirectoryThe name given to the working directory in the Create Working Directory action.

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Installing npm Packages

This is the Npm Install action, which allows you to install Node.js packages and use them with the Run Node.js Script action.
  1. Start by setting up a Working Directory using the Create Working Directory action.
  2. Next, specify the Node package you wish to install.
  3. Finally, in the ‘Working Directory’ parameter of the ‘Run Node.js Script’ action, enter the name of the Working Directory you created in step one.
ParameterDescription
PackageName of the Node.js package to install.
Working DirectoryThe name given to the working directory in the Create Working Directory action.

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Run Python

Execute Python code using a specified Python version. Useful for running complex logic, updating variable values, and modifying files in a specified `Working Directory
The following packages come pre-installed for immediate use:
  • certifi==2022.12.7
  • chardet==4.0.0
  • idna==2.10
  • protobuf==3.18.3
  • requests==2.25.1
  • six==1.15.0
  • urllib3==1.26.5
  • dotmap==1.3.25
  • pandas==2.2.3
  • tabulate==0.9.0
  • openpyxl==3.1.4
  • markdownify==0.14.1
  • mistletoe==1.4.0
  • pillow==10.4.0
  • redshift_connector==2.1.5
  • pypdf2==3.0.1
  • psutil==6.1.1
  • pytesseract==0.3.13
  • Python v3.8 has pandas==2.0.3
  1. Start by setting up a Working Directory using the Create Working Directory action.
  2. Next, write your Python script in the code block provided within the ‘Run Python’ action.
  3. Finally, in the ‘Working Directory’ parameter of the ‘Run Python’ action, enter the name of the Working Directory you created in step one.
ParameterDescription
CodeThe python code to execute.

- Use Python’s print() function to display output.
- Use the variable picker to reference predefined workflow variables and files to modify.
VersionThe version of the Package
Working DirectoryThe name given to the working directory in the Create a Create Working Directory action.

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Referencing inputs and step outputs in Python Actions

  • Option 1 - Variable picker: Use the variable picker to select the wanted information.
  • Option 2 – Use the “context” object: In Python steps, you can reference workflow variables using the automatically generated context object syntax. The context object syntax allows you to access values from previous steps, input parameters, or other variables, and to set new variables within your Python Action.

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Installing pip Package

This is the Pip Install action, which allows you to install Python packages and use them with the Run Python action.
  1. To use this action, create a Working Directory using the Create Working Directory action.
  2. Specify which python packages you wish to install, by writing a new line separated list of packages, and run the step.
    • For git based packages use the following package name structure: git+<protocol>://<git-provider>/<git-user>/<git-repo>.git For Example: 
      
git+https://github.com/psf/requests.git

git+ssh://git@github.com/psf/requests.git
  3. Finally, in the ‘Working Directory’ parameter of the Run Python action, enter the name of the Working Directory you created in step one.
Use a connection when installing from a private repository, there is no need for a connection when installing from public repositories.
ParameterDescription
Package ListNew line separated packages to install.
Version-
Working DirectoryThe name given to the working directory in the Create a Create Working Directory action.