Github Action - 在脚本中使用变量 [重复]

Question

使用 Github 操作 (https://github.com/features/actions) 来备份文件，我需要创建一个以今天的日期/时间命名的新文件夹。

name: Backup Database

on:
  push:
    branches:
      - master

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Backup
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.HOST }}
          username: ${{ secrets.USERNAME }}
          key: ${{ secrets.KEY }}
          port: 22
          script: |
            DATE=${{ NEW DATE }} # Need to create a variable with date/time
            mkdir backup_${{ DATE }} # Create a new folder with the date/time

Answer 1

该用户发现了一个 hack 来创建使用 bash 命令输出生成的变量：

用他的话来说：

I found a way to hack this limitation. 
Write your VAR on disk (the CI system disk), 
then cat $my_var to use your VAR in every step you need 

https://github.com/actions/starter-workflows/issues/68#issuecomment-524937002