On a Redhat Linux system running a bash shell script I need some help with an if then statement that has more than 2 conditions. I basically want to check for this
A AND B or C
A AND B or D
A AND B or E
Something along these lines but it doesn't work and wondered if I have the correct usage of brackets. It's not what's contained for evaluation that's the issue it's the syntax of the AND and OR where there's more than two conditions that I am struggling with.