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<!--
title: UNIX ProTips
description: Handy tips for budding power users
author: xvetrd
-->
# UNIX ProTips
I realized today I wasn't getting mail notifications, and I hadn't set
them up on this shell. So here are some things I do on my local machine
that work here:
To get the shell to tell you when you have new mail, after command
executions, add this to your `.profile` or your `.kshrc` files
(or other shell RC file) in your home directory.
```
export MAILCHECK=0
```
And, if you want, you can have a persistent notification when
you have un-incorporated mail, or more specifically, when your
`/var/mail/<username>` isn't empty.
```
PS1="\$([-s /var/mail/`whoami` ] && echo '* ')$PS1"
```
For maildir try this:
```
PS1="$(test -z "`ls -A $HOME/Maildir/new`" || echo '* ')$PS1"
```
This works in `/bin/ksh`, I can't speak for other shells.
If anybody else has some quick tips they would like to share, I encourage
them to edit this page.
Happy Unixing!
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