https://github.com/mondeja/starts-with-line-replacer

GitHub Action that replaces lines in a file which start with a specific string.
https://github.com/mondeja/starts-with-line-replacer

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Last synced: 4 months ago
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GitHub Action that replaces lines in a file which start with a specific string.

• Host: GitHub
• URL: https://github.com/mondeja/starts-with-line-replacer
• Owner: mondeja
• Created: 2025-05-28T14:34:04.000Z (4 months ago)
• Default Branch: main
• Last Pushed: 2025-05-28T15:21:43.000Z (4 months ago)
• Last Synced: 2025-06-07T14:05:42.643Z (4 months ago)
• Topics: github-actions
• Homepage:
• Size: 2.93 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# starts-with-line-replacer

[![Tests](https://img.shields.io/github/actions/workflow/status/mondeja/starts-with-line-replacer/tests.yml?label=tests&logo=github)](https://github.com/mondeja/starts-with-line-replacer/actions)

GitHub Action that replaces lines in a file which start with a specific string.

> [!WARNING]  

> This action is not intended to be used with untrusted input.

## Usage

For example, given the next file

```toml

# Cargo.toml

[package]

name = "my-package"

version = "0.1.0"

```

the version can be updated with

```yaml

jobs:

  update-version:

    runs-on: ubuntu-latest

    steps:

      - uses: actions/checkout@v2

      - name: Update version

        uses: mondeja/starts-with-line-replacer@main

        with:

          file: Cargo.toml

          starts-with: 'version ='

          replace-by: 'version = "0.2.0"'

```

- If the input file is not found, the action will fail.

- If the line that starts with the specified string is not found, the action will fail.

## How it works

It uses a `sed -i 's/^${{ inputs.starts-with }}.*/${{ inputs.replace-by }}/'` command in a composite action to replace the line that starts with `starts` with `replace`.