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how to add Loop number to variable name?

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# 1  
Old 05-21-2009
Question how to add Loop number to variable name?
Hi there,

I need to add a sequence of numbers to existing variables within the script to be able to call the variable automatically. Somehow it's just printing the loop number. Here's what I've got so far. Smilie

Code:
#!/bin/sh
FOLDER1=foo
FOLDER2=bar
FOLDER3=beer

for ((a=1; a <= 3 ; a++))
do
  n="$FOLDER$a"
  echo $n
done

I'm at lost on how to get that variable name together within the loop.

Any help would be greatly appreciated.

thanks guys.
# 2  
Old 05-21-2009
Quote:
Originally Posted by siul0_0
Hi there,

I need to add a sequence of numbers to existing variables within the script to be able to call the variable automatically. Somehow it's just printing the loop number. Here's what I've got so far. Smilie

Code:
#!/bin/sh
FOLDER1=foo
FOLDER2=bar
FOLDER3=beer

for ((a=1; a <= 3 ; a++))


That is not /bin/sh syntax. If you are using bash, why not use an array?
Quote:
Code:
do
  n="$FOLDER$a"

Code:
eval "n=\$FOLDER$a"

Quote:
Code:
  echo $n
done

This User Gave Thanks to cfajohnson For This Post:
retrow
# 3  
Old 05-21-2009
that worked like a charm! Thank you Smilie

PS: Well, I'm not using an array because I'm fairly new to shell scripts.
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