Windows7(64) failed to start Docker Quickstart Terminal after installing and playing docker Toolbox!

What is the reason why vboxmanage.exe cannot be found?

Sh can be initialized normally by double-clicking start.sh

Let’s put down the start.sh code roughly.

#!  /bin/bash
 
 trap '[ "$?"  -eq 0 ] || read -p "Looks like something went wrong in step ´$STEP´... Press any key to continue..."' EXIT
 
 # TODO: I'm sure this is not very robust.  But, it is needed for now to ensure
 # that binaries provided by Docker Toolbox over-ride binaries provided by
 # Docker for Windows when launching using the Quickstart.
 export PATH="/c/Program Files/Docker Toolbox:$PATH"
 VM=${DOCKER_MACHINE_NAME-default}
 DOCKER_MACHINE=./docker-machine.exe
 
 STEP="Looking for vboxmanage.exe"
 if [ !   -z "$VBOX_MSI_INSTALL_PATH" ];  then
 VBOXMANAGE="${VBOX_MSI_INSTALL_PATH}VBoxManage.exe"
 else
 VBOXMANAGE="${VBOX_INSTALL_PATH}VBoxManage.exe"
 fi

Can’t find the reason!