Is there a way to make all of my bash shells login shells?

I googled a bit and found many documents pointing to ~/.bashrc and ~/.bash_profile, but none of them outlined how to make all of my shells login shells.

Any help would be greatly appreciated.

Why do you need all your shells to be login shells?

If you're confronting the issue I think you are (your xterms looking different from your login shells) then let me explain a remedy this way:

your .bashrc is for non-login shells. Non login shells read this file when your term session is begun. So, to make all shells uniform, we make this file point to the sources of information for login shells. My ~/.bashrc looks like this --
Now, when you start an xterm as a non-login shell, it still reads /etc/profile and your bash_profile to get your login-shell settings. All of your user specific aliases and variables should now go into .bash_profile and they will be read no matter what type of session you are running -- xterm, non-login, login, everything.

--Shade

That's exactly what I wanted. Thank you.

Hello everyone,
i tried to make one program running on linux, and i added following line in the .bash_profile files
export program='/mydir/path'

another changing also have been done in the .bashrc file

#!/bin/bash
#
source /etc/profile
source ~/.bash_profile


after these changes i logout, then i can not login again, when i log in after input password, it seems cpu will work busy but nothing windows come out?
who knows what's wrong ? and who knows how to resolve this problem!
thanks a lot in advance!
linux new user