prompt

function my_timer_start {
    my_timer=${my_timer:-$SECONDS}
}

function my_timer_stop {
    my_time=$(( $SECONDS - $my_timer ))
    if (( $my_time > 59 )); then
	local s=$(( $my_time % 60 ))
	local m=$(( $my_time / 60 ))
	if (( $m > 59 )); then
	    local m=$(( $m % 60 ))
	    local h=$(( $my_time / 3600 ))
	    my_time=$h':'$m':'$s
	else
	    my_time=$m':'$s
	fi
    fi
    unset my_timer
}

function my_prompt {
    local exit_status="$?"
    my_timer_stop
    local default_user="esert";
    local RED="\[\033[1;31m\]"
    local OFF="\[\033[0m\]"
    if [ "$USER" != "$default_user" ]; then
	if [ "$exit_status" != "0" ]; then
	    if [ "$my_time" != "0" ]; then
		PS1="${RED}USER: \u${OFF}\n${RED}ERROR: ${exit_status}${OFF}\n\h:\w[$my_time]\$ "
	    else
		PS1="${RED}USER: \u${OFF}\n${RED}ERROR: ${exit_status}${OFF}\n\h:\w\$ "
	    fi
	else
	    if [ "$my_time" != "0" ]; then
		PS1="${RED}USER: \u${OFF}\n\h:\w[$my_time]\$ "
	    else
		PS1="${RED}USER: \u${OFF}\n\h:\w\$ "
	    fi
	fi
    else
	if [ "$exit_status" != "0" ]; then
	    if [ "$my_time" != "0" ]; then
		PS1="${RED}ERROR: ${exit_status}${OFF}\n\h:\w[$my_time]\$ "
	    else
		PS1="${RED}ERROR: ${exit_status}${OFF}\n\h:\w\$ "
	    fi
	else
	    if [ "$my_time" != "0" ]; then
		PS1="\h:\w[$my_time]\$ "
	    else
		PS1="\h:\w\$ "
	    fi
	fi
    fi
}

trap 'my_timer_start' DEBUG
PROMPT_COMMAND=my_prompt