flock
{
flock -n 3
[ $? -eq 1 ] && echo "anoter prossess is running" && exit 1
sleep 10
echo helloworld11
sleep 3
echo helloworld22
} 3>/root/1.pid
flock
{
flock -n 3
[ $? -eq 1 ] && echo "anoter prossess is running" && exit 1
sleep 10
echo helloworld11
sleep 3
echo helloworld22
} 3>/root/1.pid