How to detect Operating system and assign it to variable?

[shinebayar-g]

• Task version: 3.0
• OS: Ubuntu 18.04

I'm trying to detect operating system of the server and assign it to variable. Here is my Taskfile.

version: '3'

vars:
  DETECTED_OS:
    sh: |
        if [[ "$OSTYPE" == "linux-gnu"* ]]; then
          echo "linux-gnu"
        elif [[ "$OSTYPE" == "darwin"* ]]; then
          echo "darwin"
        elif [[ "$OSTYPE" == "cygwin" ]]; then
          echo "cygwin"
        elif [[ "$OSTYPE" == "msys" ]]; then
          echo "msys"
        elif [[ "$OSTYPE" == "win32" ]]; then
          echo "win32"
        elif [[ "$OSTYPE" == "freebsd"* ]]; then
          echo "freebsd"
        else
          echo "unknown"
        fi

tasks:
  os:
    desc: Detect operating system
    cmds:
      - echo "{{.DETECTED_OS}}"
    silent: true

Edit: Initial issue was solved, I was missing " symbol around variable. Above script is supposed to return linux-gnu since I'm running it on Ubuntu 18.04 server (It returns linux-gnu if I run it as bash script). But it's returning unknown when run as task. Does anyone know how to make it work?

This suggests, task scripts cannot access host OS ENVs?

[andreynering]

Hi @shinebayar-g,

That sounds like an issue with the Shell interpreter library that Task uses: https://github.com/mvdan/sh

Can you please report this issue there? Feel free to ping me and mention this original issue.