Shell Script Exercise II

Print 99 multiplication table

#for Statement Format

#!/bin/bash

for ((a = 1; a <= 9; a++))

Do

for ((b=1; b<= $a; b++))

Do

Let Sum=b*a

Echo-ne "$a * $b = $sum \ t"

Done

echo ""

Done

#while Statement Format

#!/bin/bash

A=1

While [$a-le 9]

Do

B=1

While [$b-le $a]

Do

Let sum= $a * $b

Echo-ne "$a * $b = $sum \ t"

Let b++

Done

echo ""

Let a++

Done

Print equilateral triangle

#for statement format, positive triangle

#!/bin/bash

For ((i=1;i<=9;i++))

Do

for ((a=9; a>= $i; a--))

Do

Echo-n ""

Done

for ((b=1; b<=i; b++)

Do

Echo-n "$i"

Done

echo ""

Done

#while statement format, inverted triangle

#!/bin/bash

I=8

While [$i-ge 1]

Do

A=9

While [$a-ge $i]

Do

Echo-n ""

Let a--

Done

B=1

While [$b-le $i]

Do

Echo-n "$i"

Let b++

Done

echo ""

Let i--

Done

Print Diamond

#while Statement Format

#!/bin/bash

I=1

While [$i-le 9]

Do

A=9

While [$a-ge $i]

Do

Echo-n ""

Let a--

Done

B=1

While [$b-le $i]

Do

Echo-n "$i"

Let b++

Done

c=2

While [$c-le $i]

Do

Echo-n "$i"

Let C + +

Done

echo ""

Let i++

Done

I=8

While [$i-ge 1]

Do

A=9

While [$a-ge $i]

Do

Echo-n ""

Let a--

Done

B=1

While [$b-le $i]

Do

Echo-n "$i"

Let b++

Done

c=2

While [$c-le $i]

Do

Echo-n "$i"

Let C + +

Done

echo ""

Let i--

Done

#for Statement Format

for (i=9; i>0; i--)

Do

for ((a=1; a<= $i; a++))

Do

Echo-n ""

Done

for ((b=9; b>= $i; b--))

Do

Echo-n "$i"

Done

for ((c=8; c>= $i; c--))

Do

Echo-n "$i"

Done

echo ""

Done

for ((i=2; i<=9; i++)

Do

for ((a=1; a<= $i; a++))

Do

Echo-n ""

Done

for ((b=9; b>= $i; b--))

Do

Echo-n "$i"

Done

for ((c=8; c>= $i; c--))

Do

Echo-n "$i"

Done

echo ""

Done

Shell Script Exercise II