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CLI tool designed to simplify the process of placeholder replacement.

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envsub

WIP

CLI tool designed to simplify the process of placeholder replacement in text files. It's similar to envsubst in that it is primarily used for injecting environment variables into configuration files.

Getting started

Installation

TODO

Usage

apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
  - image: nginx:${NGINX_VERSION}
    name: nginx
    ports:
    - containerPort: ${PORT | default(80)}
    restartPolicy: Never
NGINX_VERSION=1.23.4 envsub < manifest.yaml
apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
  - image: nginx:1.23.4
    name: nginx
    ports:
    - containerPort: 80
    restartPolicy: Never

Filters

Filter Description
default(value) Replaces the input with the default value if the input is empty.
lowercase Transforms the characters in the input to lower case.
trim Removes whitespace from the start and end of the input.
uppercase Transforms the characters in the input to upper case.

License

© 2019 Daniel Morris
Made available under the terms of the Apache License 2.0.