timeout()

gistfile1.sh

# timeout()
#   fork from http://d.hatena.ne.jp/hcr/20050803/1123025377
#   2010-04-29
 
timeout()
{
        count_timeout=$1
        shift 1;
        echo exec \'$@\'
        $@ &
        pid=$!
        count=0
        while [ ${count} -lt ${count_timeout} ]
        do
                if [ -e "/proc/${pid}" ]; then
                        echo ${pid} is alive.
                        count=`expr ${count} + 1`
                        sleep 1
                else
                        echo ${pid} was disapeared.
                        count=`expr ${count_timeout}`
                fi
        done
        if [ -e "/proc/${pid}" ]; then
                kill -kill ${pid}
                wait ${pid}
                echo ${pid} was terminated by a SIG$(kill -l $?) signal.
   fi
}

timeout 5 sleep 3
timeout 5 sleep 10