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I have the following statement in windows batch.

set machinename=%1
@FOR /f "tokens=*" %i IN ('docker-machine env --shell cmd default') DO @%i

How to replace default by my variable "machinename" ?

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  • Are you just looking for how to use variables in batch? Commented Oct 7, 2017 at 15:43
  • That code will never work in a batch file. Commented Oct 7, 2017 at 15:52
  • After you've fixed the code in response to @Squashman's comment, replace default with either %1 or %machinename% Commented Oct 7, 2017 at 16:39
  • Open a command prompt window and run for /?. This outputs the help for command FOR with first sentence in fourth paragraph: To use the FOR command in a batch program, specify %%variable instead of %variable. Next run call /? and it is explained in output help how arguments can be referenced in a batch file. Then run set /? and the output help explains the usage of environment variables. And if you need a list of commands, run in command prompt window help. Commented Oct 7, 2017 at 18:30

1 Answer 1

Reset to default
1

How about this:

FOR /f "tokens=*" %%i IN ('docker-machine env --shell cmd "%~1"') DO %%~i

There is no need to have the machineName variable, as machineName points to %1. The ~ denotes to remove surrounding quotes, and add back extra quotes, just as a precaution.

Also, %i should be changed to %%i. %i is for command-line, and %%i is for a batch file.

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