Hi

I am not able to setup PS1 environment variable in .profile file in my Home directory.I am using RED HAT3 Linux.this is the excercise that i have done

$echo $SHELL
/bin/ksh

$pwd
/home/khan

$ls -l .profile
-rwxrwxrwx

$more .profile
set -o vi
export PS1='khan'

$echo $PS1
$

I tried reloging in,but no use.Pls. advise urgently.

Thanks
Khan.A.W