Comment 0 for bug 984390

$PATH isn't sourced from /etc/environment, instead the version in
/etc/login.defs is used. (The example below comes from a precise install.)

| james@panlong:~$ echo $PATH
| /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
| james@panlong:~$ sudo su - buildd
| buildd@panlong:~$ echo $PATH
| /usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
| buildd@panlong:~$ cat /etc/environment
| PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games"
| buildd@panlong:~$ grep PATH /etc/login.defs
| # Three items must be defined: MAIL_DIR, ENV_SUPATH, and ENV_PATH.
| # *REQUIRED* The default PATH settings, for superuser and normal users.
| ENV_SUPATH PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
| ENV_PATH PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
| #CRACKLIB_DICTPATH
| buildd@panlong:~$ sudo sed -i -e "s#^ENV_PATH.*#ENV_PATH PATH=/wtf:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games#" /etc/login.defs
| buildd@panlong:~$ logout
| james@panlong:~$ sudo su - buildd
| buildd@panlong:~$ echo $PATH
| /wtf:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
| buildd@panlong:~$