Why 'groups' command shows different result in 'cron' and interactive in NIS environment?

Solution Verified - Updated -

Issue

  • Command groups shows differences in cron, at and CLI.
    When groups is run from the command line expected list of groups is displayed:
$ groups
testuser nisgroup1 nisgroup2 nisgroup3

When command groups is run from at or cron for the same user, the result lacks the NIS groups:

Date: Mon, 16 Mar 2015 13:28:34 +0100
From: testuser@server
To: testuser@server
Subject: Output from your job       10

testuser

Environment

  • Red Hat Enterprise Linux 5.11
  • NIS server
  • NIS client
  • at daemon
  • cron daemon

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