Shell Programming and Scripting

 
param.ksh
---------
export A=123
export B=345
export C=567
export D=OPLI
export E=OL89PO

 
set -A ARRAY "A" "B" "C" "D" "E"
for i in "${ARC_ARRAY[@]}"
do
 echo ${i}
 if [ -z ${i} ]
 then
  echo "Parameter ${i} does not defined in param.ksh file"
 fi
done

$
$ cat array
#! /bin/ksh

export A=123
export B=345
export C=567
export D=OPLI
export E=OL89PO

set -A ARRAY "A" "B" "C" "D" "E"
for i in "${ARRAY[@]}"
do
 eval value=\$$i
 echo ${i} = $value
 if [ -z ${value} ]
 then
  echo "Parameter ${i} does not defined in param.ksh file"
 fi
done
$
$
$ ./array
A = 123
B = 345
C = 567
D = OPLI
E = OL89PO
$