Initializing arrays in bash

Raht · 03-12-2009, 11:48 AM

Hello there,

I am fairly sure this one is a result of some stupid mistake i overlooked, but i really ran out of ideas...

I'm making script for automated compiling of one program which would output builds optimized for many architectures. For clearancy, I do each build in it's own catalogue and list of builds with their respective catalogues would be stored as array.

I'm using this guide as reference. It describes making array as naming a variable with additional brackets denoting it's position in array.

In my code, it looks exactly like this:

Code:

mtune[1]="build/mtune/athlon"
mtune[2]="build/mtune/athlon-4"
mtune[3]="build/mtune/athlon-mp"
mtune[4]="build/mtune/athlon-tbird"
mtune[5]="build/mtune/athlon-xp"
mtune[6]="build/mtune/c3"
mtune[7]="build/mtune/c3-2"
mtune[8]="build/mtune/core2"
mtune[9]="build/mtune/i386"
mtune[10]="build/mtune/i486"
mtune[11]="build/mtune/i586"
mtune[12]="build/mtune/i686"
mtune[13]="build/mtune/k6"
mtune[14]="build/mtune/k6-2"
mtune[15]="build/mtune/k6-3"
mtune[16]="build/mtune/k8"
mtune[17]="build/mtune/opteron"
mtune[18]="build/mtune/pentium"
mtune[19]="build/mtune/pentium-m"
mtune[20]="build/mtune/pentium-mmx"
mtune[21]="build/mtune/pentium2"
mtune[22]="build/mtune/pentium3"
mtune[23]="build/mtune/pentium4"
mtune[24]="build/mtune/pentiumpro"
mtune[25]="build/mtune/prescott"

But upon invoking $mtune or any $mtune[x] variable, output is blank, like the variable(s) were never initialized. What am I doing wrong?

bgeddy · 03-12-2009, 12:33 PM

Maybe you should post your script as it's hard to tell what you are doing. This may give you some insight :

Code:

mtune[1]="build/mtune/athlon"
mtune[2]="build/mtune/athlon-4"
mtune[3]="build/mtune/athlon-mp"
mtune[4]="build/mtune/athlon-tbird"
mtune[5]="build/mtune/athlon-xp"
mtune[6]="build/mtune/c3"
mtune[7]="build/mtune/c3-2"
mtune[8]="build/mtune/core2"
mtune[9]="build/mtune/i386"
mtune[10]="build/mtune/i486"
mtune[11]="build/mtune/i586"
mtune[12]="build/mtune/i686"
mtune[13]="build/mtune/k6"
mtune[14]="build/mtune/k6-2"
mtune[15]="build/mtune/k6-3"
mtune[16]="build/mtune/k8"
mtune[17]="build/mtune/opteron"
mtune[18]="build/mtune/pentium"
mtune[19]="build/mtune/pentium-m"
mtune[20]="build/mtune/pentium-mmx"
mtune[21]="build/mtune/pentium2"
mtune[22]="build/mtune/pentium3"
mtune[23]="build/mtune/pentium4"
mtune[24]="build/mtune/pentiumpro"
mtune[25]="build/mtune/prescott"
for ((member=1;member<=${#mtune[*]};member++)); do
	echo Member $member contains ${mtune[$member]}
done