which -a vim

Sorry, as an AI language model, I don't have any specific command-line environment or operating system to execute the command "which -a vim". However, in general, the "which" command is used to locate a command's executable file location in the system's PATH environment variable. The "-a" option in the "which" command is used to display all executable files found in the PATH. So, "which -a vim" will display all the locations of the "vim" command in the PATH.