On Mon, Apr 24, 2017 at 12:59:01PM +0200, [email protected] wrote:
> V_NAME=Friday
> for (( INDEX=0; INDEX<$((10-$(expr length $V_NAME))); INDEX++ ))
The outer (( )) in the C-style for loop already create an arithmetic
expression context. You don't need to use $(( )) inside them. You can
simply write:
for (( INDEX=0; INDEX<10-${#V_NAME};; INDEX++ ))
By the way, the [ ] index syntax in an indexed (not associative) array
expansion works the same way. You can simply write:
"${a[x+1]}"
instead of
"${a[$((x+1))]}"
