Shell Programming and Scripting

count=2;
while loop
{
user=$[$count]
echo "$user"
count=$(($count+1))

}

 
count=2
eval user=\${${count}}
echo "$user"

count=2
to=6
while [ $count -le $to ]
do
  eval user=\${$count}
  echo "$user"
  count=$((count+1))
done

[root@node2 ~]# cat get 
#!/bin/bash

set -- {a..c}
for((i=1; i<=${#}; ++i)); do
     echo ${!i}
done
[root@node2 ~]# bash get 
a
b
c

for count in {2..6}; do
  user=${!count}
  echo "$user"
done