General :: LFS /tools/bin/groups Not Displaying Supplementary Groups?

So i am at the stage of about to install the basic system and am using a derivation of the package management provided by Matthias S. Benkmann. To this end I am using his useradd and groupadd scripts to update the files:

/etc/passwd
/etc/group

My issue is that when I run the commands(created as part of temporary system when installing coreutils):

Code:

/tools/bin/su linux
#then as user
/tools/bin/groups

(here linux is the name of the user) This only returns the user being in the group named after user but not the additional group of 'install' Also, prior to logging in as user, if I use this command as root:

Code:

/tools/bin/groups linux

linux install This then returns that the user is in the correct groups. Lines from relevant files look like:

Code:

#/etc/passwd
linux:x:10000:10000::/usr/src/build:/bin/bash
#/etc/group

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