Real Vim ninjas count every keystroke - do you?

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$ gem install vimgolf
$ vimgolf setup
$ vimgolf put 9v006233d72d000000000219

Fix the shell script!

Fix the shell script with the fewest keystrokes!

Start file
#!/bin/bash
a
= 5
b
= 10
sum
= $a + $b
echo $sum

mul
= $a * $b
echo $mul
End file
#!/bin/bash
a
=5
b
=10
sum
=$((a + b))
echo $sum

mul
=$((a * b))
echo $mul

View Diff

2,4c2,4
< a = 5
< b = 10
< sum = $a + $b
---
> a=5
> b=10
> sum=$((a + b))
7c7
< mul = $a * $b
---
> mul=$((a * b))

Solutions by @TanguyDefer:

Unlock 5 remaining solutions by signing in and submitting your own entry
Created by: @u_hossein

589 active golfers, 2544 entries

Solutions by @TanguyDefer:
34
#297 - Tanguy Defer / @TanguyDefer

07/06/2022 at 03:34PM

35
#>318 - Tanguy Defer / @TanguyDefer

07/06/2022 at 03:33PM

40
#>390 - Tanguy Defer / @TanguyDefer

07/06/2022 at 03:32PM

44
#>437 - Tanguy Defer / @TanguyDefer

07/06/2022 at 03:30PM

50
#>483 - Tanguy Defer / @TanguyDefer

07/06/2022 at 03:26PM