Shell中的for和while循环详细总结

                                psNum=`ps -ef | grep "inv_res_card_process" | grep -v "grep" | wc -l`
                                if [ $psNum -ge $MAX_RUN_NUM ]
                                then
                                              sleep 5
                                else
                                              break
                                 fi                                       
                done               
done

三.循环控制语句

# break 命令不执行当前循环体内break下面的语句从当前循环退出.
# continue 命令是程序在本循体内忽略下面的语句,从循环头开始执行