Linux script with three loops for 0-100 additions

1 ,

#!/bin/bash

#0~ add , for loop

Declare-i I

Declare-i sum

For i in {1..100};d o

Let Sum+=i

Let i++

Done

Echo $sum

2 ,

#!/bin/bash

#0~ add ,until cycle

Declare-i x=0

Declare-i sum

Until [$x-GT 100]

Do

Let Sum+=x

Let X + +

Done

Echo-e "The result is $sum"

3.  

#!/bin/bash

#0 ~100 Add, use while Loop

Declare-i x=0

Declare-i sum

while ((x<=100))

Do

Let Sum+=x

Let X + +

Done

Echo $sum

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Linux script with three loops for 0-100 additions