Can you have var$1 ? - Shell Programming and Scripting

olimiles · #1 08-19-2006

Hi all,

I'm trying to assign values to multiple variables, is there a way i can just change the number of the variable? ie

read$num=YES
write$num=NO
ex$num=YES

where the $num can be changed ie. in this instance i have 3 read variables, 3 write variables and 3 ex variables and i'd prefer not to have

read1=YES
read2=YES
read3=NO
write1=NO .... etc.

Oliver

jim mcnamara · #2 08-20-2006

Yes. You might want to do something like this so it's obvious what you're doing - you'll be amazed how confused you can be looking at code again after two years...

Code:

read"$num"=somevalue

The quotes do not change anything but make it really obvious. Also using names like for variables is VERY bad idea. Don't use variable names that are also commands or shell-builtins.

You do know that ksh supports arrays

Code:

set -A  Readvar  0 0 0
set -A  Writevar 0 0 0

Now you can reference them:

Code:

echo "${Readvar[2]}"

quick explanation of arrays:
http://www.livefirelabs.com/unix_tip...3/11102003.htm

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