awk '{

     BEGIN{stat1}

     BEGIN{stat2}

     pattern1{action1}

     pattern2{action2}

     ...

     patternn{actionn}

     {默认动作,无条件,始终执行}

     END{stat1}

     END{stat2}

}'

awk 'BEGIN{

for(i=;i<=;i++)

    {

        for(j=;j<=;j++)

        {

            tarr[i,j]=i*j;

            print i,"*",j,"=",tarr[i,j];

        }

    }

}'

# awk 打印 99乘法表

awk 'BEGIN{

for(i=;i<;i++)

    {

        for(j=;j<=i;j++)

        {

            printf "%d%s%d%s%d\t",j,"*",i,"=",i*j;

        }

        printf "\n"

    }

}'

# awk 浮点计算

aa=

bb=

awk -v m1=$aa -v m2=$bb 'BEGIN{

    num = m1/m2;

    print m1;

    print m2;

    print num;

    printf "%.9f\n", num;

}'

# 计算器
firstNum=

secondNum=102.4

ss=`awk -v m1=$firstNum -v m2=$secondNum 'BEGIN{num = m1/m2; printf "%.9f\n", num;}'`

echo $ss

201.611328125