pdksh not setting $? with exit status of commands

[David Kramer]

When I execute commands in the pdksh shell that should set an exit value, $? is
not being set.  When I use the bash shell, it is.  

In pdksh:
/c/windevel> grep o regexps
oo
/c/windevel> echo $?
0
/c/windevel> grep Z regexps
/c/windevel> echo $?
0

In bash:
/c/windevel> grep o regexps
oo
/c/windevel> echo $?
0
/c/windevel> grep Z regexps
/c/windevel> echo $?
1

Grep is just one command I'm using for demonstration.  This is true of all
commands I've tried so far.  Even when I write my own script and exit 1 from it,
$? is zero afterwards, which is really hurting my automation efforts.

Oh, and I have to use a ksh-like shell, because the same scripts need to run on
an AIX box with ksh and no bash.

Thanks.



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