Hi,
All the scripts we have here use typeset instead of normal variables.
They don't have any parameters, they just get declared at the beginning of the scripts like this:
typeset var1 var2 var3
Could anyone tell me why this is done? I don't see the advantage in this over using normal variables.
It is probably a "best practices" convention in your shop. It may not be a best practice in reality.
In bash: typeset, when applied as in your example, prevents parameter substitution from being used on the variable. That is the only difference.
Using typeset -i (or other options) does have an effect on what the script can or cannot do with the variable.