ember

Create a new Ember application

$ ember new [my_new_app]

$ ember addon [my_new_addon]

$ ember build

$ ember build -prod

$ ember serve

$ ember test

$ ember generate [type] [name]

$ ember install [name_of_addon]

ember [options]

-d
    Specifies a data file to use for variable substitution.

-e
    Defines an expression for variable substitution.

-o
    Specifies the output file for the generated script.

-v
    Verbose mode.

-h
    Displays help information.

Ember is a command-line tool designed to streamline the creation of shell scripts. It simplifies repetitive tasks by allowing users to define code snippets (templates) and then combine them with data to generate customized scripts. Ember supports variable substitution, conditionals, and looping constructs, making it a powerful tool for automating script generation. It's particularly useful for creating configuration files, deployment scripts, and other scripts that require similar structures with varying parameters. While not as widely used as some other scripting tools like `sed` or `awk`, Ember provides a dedicated framework for code generation, offering a more structured approach than manual scripting. Think of it like a lightweight code generator that works directly from the command line.
It can be used to quickly generate scripts for deployment, system administration, and other tasks where boilerplate code is common. Ember uses a simple template language and data sources (environment variables or files) to create the final scripts. This makes it easy to maintain and update scripts as your needs change.

Ember's template language can be limited for complex scripting scenarios. Debugging generated scripts might require examining both the template and the resulting script.
It is not a part of standard linux distribution and requires installation.

Ember uses a simple template syntax to define variables and control structures. Variables are typically enclosed in delimiters (e.g., `{{variable}}`), and control structures like conditionals and loops are also defined using specific keywords. Refer to the Ember documentation or help for the exact syntax details.

Ember can use data from various sources, including environment variables and external data files. This allows you to easily customize scripts based on the environment in which they are run. Data files can be in various formats, such as JSON or YAML. Specifying these can be done with the `-d` flag.

The history of Ember isn't extensively documented in readily available resources like traditional Unix manual pages. It likely originated as a specialized tool created to address specific script generation needs within a particular project or organization. Its development and usage are therefore probably concentrated within certain communities and specific software projects where code generation is a common requirement. The lack of widespread adoption might also explain the limited documentation.

sed(1), awk(1), m4(1)