how to use $var$i in shell

Question

domaindir1='/somedir/somedir1'
domaindir2='/somedir/somedir2'
domaindir3='/somedir/somedir3'
domaindir4='/somedir/somedir4'
for i in {1..4}
do
  echo $domaindir$i  
done

So what I want in output is

somedir/somedir1
somedir/somedir2
somedir/somedir3
somedir/somedir4

but I am getting

domaindir1
domaindir2
domaindir3
domaindir4

Answer 1

Well, since you are on bash, why not using arrays?

domaindir[1]='/somedir/somedir1'
domaindir[2]='/somedir/somedir2'
domaindir[3]='/somedir/somedir3'
domaindir[4]='/somedir/somedir4'
for i in {1..4}
do
  echo ${domaindir[i]}
done

Or better,

for i in "${domaindir[@]}"
do
  echo $i
done

this way you don't need to hardcode the array length.