How run a script with variable in the name under PowerShell in GitHub workflow / actions

Question

I'm implementing a GitHub workflow and I need to run a batch (*.bat) script under PowerShell with a variable part. This doesn't seem to work. A simple batch script is running fine. But when I try to insert a variable into its name it doesn't

I've tried these with no success:

run: |
  $i=2
  call "myscript_$i.bat"

run: |
  $i=2
  .\myscript_$i.bat

run: |
  $i=2
  .\myscript_${env:i}.bat

Is there any Obi-Wan who can help on this? )

Try removing env and just using ${i} and see if that works? Maybe try $($i), it might work — Nico Nekoru
– Nico Nekoru, Commented May 31, 2020 at 21:38
@NekoMusume, thanks. Please see below. I've found a solution to how to make it work. — erg
– erg, Commented May 31, 2020 at 21:47

mklement0 · Accepted Answer · 2020-06-01 02:05:36Z

2

While your own solution works, Invoke-Expression should generally be avoided.

To invoke a command by a name / path based on a quoted string and/or containing a variable reference or expression, use &, the call operator:

run |
  $i=2
  & ".\myscript_$i.bat"

(In this particular case, you could even omit the enclosing ".)

edited Jun 1, 2020 at 2:05

answered May 31, 2020 at 23:21

mklement0

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erg · Accepted Answer · 2020-05-31 21:45:43Z

0

Well, after some experimenting this solution works:

run |
  $i=2
  Invoke-Expression ".\myscript_$i.bat"

answered May 31, 2020 at 21:45

erg

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