Re: [Help-bash] trap when expected return value may be non-zero?

[adrelanos]

Matthew Cengia:
> I'd do it like this:
> 
> | address@hidden:tmp$ trap "echo error" ERR INT TERM
> | address@hidden:tmp$ false
> | error
> | address@hidden:tmp$ false || { ret=$?; true; }
> | address@hidden:tmp$ echo $ret
> | 1
> 
> So as you can see, false exits with status '1', and therefore the trap
> is hit. However, if you OR the result with something that is guaranteed
> to succeed (e.g. true or ':'), grabbing a copy of the return code of
> the first command before calling 'true', you can avoid hitting the trap.

That looks nice!