[SOLVED] Store a value to linked name of variable or array

emanation · 02-06-2012, 05:00 PM

Is it possible in Bash to store a value to variable with linked name?
I mean when variable name is stored at other variable, like here

Code:

A="abcd dcba"
B=A
C=${!B}
echo $C

So, I need to store to ${!B}

In fact I need more than this. I have arrays

Code:

small=( 'one' 'two' 'three' 'four' )
big=( 'ONE' 'TWO' 'THREE' 'FOUR' )
digit=( 1 2 3 4 )
totalNames=( 'small' 'big' 'digit' )

and I get needed values like

Code:

for name in ${totalNames[@]}; do
temp1=$( eval echo \${$name[0]} )
temp2=$( eval echo \${$name[1]} )
done

or without cycle

Code:

temp1=$( eval echo \${${totalNames[0]}[0]} )
temp2=$( eval echo \${${totalNames[0]}[1]} )

after some actions with temp1 and temp2
i need to store values to ${$name[2]} and ${$name[3]} in cycle
or to ${${totalNames[0]}[2]} and ${${totalNames[0]}[3]} out of cycle.
Is it possible?
Thanks a lot.

emanation · 02-06-2012, 05:08 PM

if it's not possible, maybe it's possible to create new variable in cycle with name result$name which in fact must be

Code:

$resultsmall
$resultbig
$resultdigit

it also solves my needs.
Thanks.

emanation · 02-08-2012, 10:41 AM

inside cycle

Quote:

eval $name[0]='New\ value'

out cycle

Quote:

eval ${totalNames[0]}[0]='New\ value'

new variable name

Quote:

eval result${totalNames[0]}='New\ value'