gistfile1.txt

#!/usr/bin/env sh
source ~/.rvm/scripts/rvm
! command -v ruby >/dev/null 2>&1 || command -v ruby | grep -v rvm >/dev/null
echo "Result = $?"
echo "<pre>"
echo "rvm_path = '$rvm_path'"
echo "$rvm_environments_path"
echo "---"
rvm alias list
echo "--"
echo "Before: $(rvm tools identifier)"
rvm default
echo "After: $(rvm tools identifier)"
echo "</pre>"
__rvm_load_rvmrc
exec ruby "$@"