Re: Silly shell question

["Jeremy C. Reed" <reed%reedmedia.net@localhost>]

Some ideas to add to your research:

echo $FOO
FOO=def
ksh
echo $FOO
exit
> # FOO=abc
> # export FOO
> # ksh
> # echo $FOO
> abc
> # exit
> # FOO=123
> # ksh
> # echo $FOO
> 123
> # exit
ksh
echo $FOO
unset FOO
echo $FOO
exit
echo $FOO
unset FOO
echo $FOO
ksh
echo $FOO
exit