if [[ -v BASH_VERSION ]]thenexport PERMISSIONER_HOME="$(readlink -f "$(dirname "${BASH_SOURCE[0]}")")"elif [[ -v ZSH_VERSION ]]thenexport PERMISSIONER_HOME="$(readlink -f "$(dirname "${(%):-%x}")")"elseecho "Unsupported shell, only bash and zsh are supported." >&2return 2fiexport PATH="$PERMISSIONER_HOME/bin${PATH:+:${PATH}}"