have yandex-tank && 
_yandex_tank() 
{
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"

    if [[ ${cur} == -* ]] ; then
    	opts=`yandex-tank --bash-switches-list`
        COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
        return 0
    fi
	
    if [[ ${prev} == -o ]] ; then
    	opts=`yandex-tank --bash-options-prev="${prev}" --bash-options-cur="${cur}"`
        COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
        return 0
    fi
    COMPREPLY=()
} &&
complete -o default -F _yandex_tank yandex-tank && 
complete -o default -F _yandex_tank yandex-tank-jmeter && 
complete -o default -F _yandex_tank yandex-tank-udp &&
complete -o default -F _yandex_tank yandex-tank-elliptics