Shell Programming and Scripting

$ touch toto

$ cat test.ksh
#!/bin/ksh
set -A services "toto" "titi" "tata" "/etc/redhat-release" "tete"
i=0
while [ ${#services[*]} -gt $i ];do
if ls "${services[$i]}" > /dev/null 2>&1; then
    echo "mycode goes here"
else 
    echo "no...some command"
fi;
((i+=1))
done

$ ksh test.ksh 
mycode goes here
no...some command
no...some command
no...some command
no...some command

ls "${services[$i]}" > /dev/null 2>&1
if [ $? -eq  0 ]; then 
    echo "true";
else 
    echo "false"
fi