Shell Programming and Scripting

So i have used arrays for a while now but I just notice in one of my arrays when using an array with 9+ items in it that after running a for loop on the array it was replacing the first array with what ever was last and I cant figure out why.


Here is my code.

Code:

#!/bin/bash
vm=( 0 1 2 3 4 5 6 7 8 9 10 )

echo before for loop array=${vm[@]}
for vm in ${vm[@]}
do
	echo $vm
done
echo after for loop array=${vm[@]}

before for loop array=0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
after for loop array=10 1 2 3 4 5 6 7 8 9 10

Thanks in advance I am thinking its something stupid and i'm over looking it.

SP

Code:

for x in ${vm[@]}
do
    echo x
done

You shouldn't use the same variable name in the for loop as the array

Try this instead:

Code:

#!/bin/bash
vm=( 0 1 2 3 4 5 6 7 8 9 10 )

echo before for loop array=${vm[@]}
for vm_element in ${vm[@]}
do
	echo $vm_element
done
echo after for loop array=${vm[@]}

Yeah I just figured that out. I was mistaken and thought that a $vm would be differnt then ${vm} I knew it was stupid thanks for the help. Sorry to waste everyones time.