How to use the command ngs (with examples)

The command ngs is a scripting language created specifically for Ops. It provides a simple and expressive syntax for writing scripts to automate operations tasks. This article will illustrate three common use cases for the ngs command: executing a code snippet, executing a script, and printing the version.

Use case 1: Execute a code snippet

Code:

ngs -e "echo('ngs is executed')"

Motivation: Executing a code snippet with the ngs command can be useful when you want to quickly test a small piece of code or perform a one-time operation without the need to create a separate script file.

Explanation:

• -e: This option specifies that the following argument is a code snippet to be executed.
• "echo('ngs is executed')": This is the code snippet that will be executed. In this example, it simply prints the message “ngs is executed” to the console.

Example output:

ngs is executed

Use case 2: Execute a script

Code:

ngs path/to/script.ngs

Motivation: Executing a script with the ngs command is the most common use case. It allows you to run a script that contains multiple lines of code and perform more complex operations.

Explanation:

• path/to/script.ngs: This is the path to the script file that will be executed. Replace path/to/script.ngs with the actual path to the script file on your system.

Example output: The output will depend on the script being executed. It could be text printed to the console, files generated, or any other operation defined in the script.

Use case 3: Print the version

Code:

ngs --version

Motivation: Printing the version of the ngs command can be helpful when troubleshooting or verifying if the correct version of ngs is installed on your system.

Explanation:

• --version: This option tells the ngs command to print the version information.

Example output:

ngs 1.0.0

Conclusion:

The ngs command is a powerful tool for executing code snippets and scripts written in the NGS scripting language. By leveraging its features, you can automate operations tasks and streamline your workflow. Whether you need to quickly test a small piece of code, run complex scripts, or check the version, the ngs command has got you covered.