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+#
+# The PAM configuration file for the Shadow `su' service
+#
+
+# This allows root to su without passwords (normal operation)
+auth sufficient pam_rootok.so
+
+# Uncomment this to force users to be a member of group root
+# before they can use `su'. You can also add "group=foo"
+# to the end of this line if you want to use a group other
+# than the default "root" (but this may have side effect of
+# denying "root" user, unless she's a member of "foo" or explicitly
+# permitted earlier by e.g. "sufficient pam_rootok.so").
+# (Replaces the `SU_WHEEL_ONLY' option from login.defs)
+# auth required pam_wheel.so
+
+# Uncomment this if you want wheel members to be able to
+# su without a password.
+# auth sufficient pam_wheel.so trust
+
+# Uncomment this if you want members of a specific group to not
+# be allowed to use su at all.
+# auth required pam_wheel.so deny group=nosu
+
+# Uncomment and edit /etc/security/time.conf if you need to set
+# time restrainst on su usage.
+# (Replaces the `PORTTIME_CHECKS_ENAB' option from login.defs
+# as well as /etc/porttime)
+# account requisite pam_time.so
+
+# This module parses environment configuration file(s)
+# and also allows you to use an extended config
+# file /etc/security/pam_env.conf.
+#
+# parsing /etc/environment needs "readenv=1"
+session required pam_env.so readenv=1
+
+# Defines the MAIL environment variable
+# However, userdel also needs MAIL_DIR and MAIL_FILE variables
+# in /etc/login.defs to make sure that removing a user
+# also removes the user's mail spool file.
+# See comments in /etc/login.defs
+#
+# "nopen" stands to avoid reporting new mail when su'ing to another user
+session optional pam_mail.so nopen
+
+# Sets up user limits, please uncomment and read /etc/security/limits.conf
+# to enable this functionality.
+# (Replaces the use of /etc/limits in old login)
+# session required pam_limits.so
+
+# The standard Unix authentication modules, used with
+# NIS (man nsswitch) as well as normal /etc/passwd and
+# /etc/shadow entries.
+auth include common-auth
+account include common-account
+session include common-session