On Fri, 2015-03-27 at 01:44 -0600, Eduardo A. Bustamante López wrote: > Why would the user set BASH_VERSION in the environment? That sounds like > asking > for trouble! Murphy's law! :D
> - try to unset BASHOPTS (did it work? then it's not bash) > - Now, store the value of BASHOPTS in a temp var > - Set a shopt option that's not set already in BASHOPTS (or unset one from > BASHOPTS) > - Check if the value of BASHOPTS changed. that sounds like a nice idea. I just thought about another "solution" myself PATH="" shopt then only a shell having shopt (hopefully that is just bash) should give $?=0 . Thanks, Chris.
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