Shell Problem

[Brian Dore]

My problem is, how do I echo ${filesystem$i[$h]}? What needs to go where the $i is?

filesystem1[1]="north"

filesystem1[2]="south"

echo ${filesystem1[1]}

north

echo ${filesystem1[2]}

south

h=1

echo ${filesystem1[$h]}

north

((h=$h+1))

${filesystem1[$h]}

south

i=1

echo ${filesystem$i[$h]}

sh: ${filesystem$i[$h]}: The specified substitution is not valid for this command.

${filesystem"$i"[$h]}

sh: ${filesystem"$i"[$h]}: The specified substitution is not valid for this command.

[Bejoy C Alias]

I think u r trying to create a two dimensional array . See the attachment to see a workaround to emulate a two dimensional array ( it is for linux , u need to write the script with the same logic )

[Mark Grant]

99 times out of a hundred, when you think you need to do this, in fact you don't. Maybe if you were to explain in more details, the specifics of what you were after, it might be possible to come up with an alternative.

[Bill Hassell]

You have a spelling error. The array is filesystem1 but your failing example shows:

filesystem$i

You can avoid this type of problem (by getting a useful error message) using the set -u option at the start of your script. Any time an undefined variable is referenced (ie, echo) the script will stop and identify the location.

[harry d brown jr]

He is trying to do this:

filesystem1[1]="north"
filesystem1[2]="south"
filesystem2[1]="east"
filesystem2[2]="west"

then referencing the SUBSCRIPTS of the variables
"filesystem1"
and
"filesystem2"

He wants this to happen:
$i=1
$h=2
echo $filesystem$i[$h]
producing "south" as output

or

$i=2
$h=1
echo $filesystem$i[$h]
producing "east" as output

live free or die
harry d brown jr

[Patrick Wallek]

What about using a variable to address the filesystem$i issue?

Something like:

i=1
h=1

FS=filesystem${i}

echo ${FS[$h]}
north

i=2
h=2
FS=filesystem${i}

echo ${FS[$h]}
west

[MarkSyder]

Sorry, this is off-topic.

Mark - nice to see your name on here again. Where've you been?

Mark Syder (like the drink but spelt different)

[Brian Dore]

What I am actually trying to do is

Outer Loop:-

prompt the user for a server name

Inner Loop:-

Prompt the user for filesystems (1 at a time in this inner loop)


When all input has been gathered I want to display the information on screen

e.g.
_______________________________________
Server:- "Server Name"
Filesystems:- "Filesystem" "Filesystem" ...

Server:- "Server Name"
Filesystems:- "Filesystem" " Filesystem" ...

etc...
_________________________________________

Hope this makes my problem clearer.

[Bejoy C Alias]

I forgot to attach the script...

[Ermin Borovac]

You can do it like this

$ filesystem1[1]="north"
$ h=1
$ i=1
$ eval echo \${filesystem$i[\$h]}
north

[Bejoy C Alias]

Balle Balle.....
Brian.....Ermin's idea works.....