handling of PATH, between "su - user" and "sudo --login -u user"

Hi there,

I have a user "oscar" on a CentOS 7 system (sudo-1.8.23 unchanged /etc/sudoers), who I want to allow to "su" to user "oracle", so I created an alias for him in his .bashrc

	alias become="sudo --login -u"

I've created a sudoers.d/gbjh entry

	oscar	ALL=(oracle)	NOPASSWD: ALL

Now, when I log into his machine as root, and type "su - oracle" my PATH is (correctly)

	[13:01|root@gbjh:/etc]# su - oracle
	[13:01|oracle@gbjh:~]$ echo $PATH
	/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/oracle/.local/bin:/home/oracle/bin

But, when he logs in and types "become oracle", his PATH afterwards is 

	[13:00|oscar@gbjh:~]$ become oracle
	[13:00|oracle@gbjh:~]$ echo $PATH
	/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/home/oracle/.local/bin:/home/oracle/bin

So, /usr/local/bin has been removed from his path and replaced with /sbin

What is the best way to make sure oracle's PATH is the same however we get to it?

Cheers
Steve

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