Você provavelmente também desejará alterar os padrões para adduser & amp; useradd, para criar novos usuários com o UID a partir de 500.
Dois arquivos precisam ser alterados, como:
/etc/login.defs
...
# Min/max values for automatic uid selection in useradd
#
UID_MIN 500
UID_MAX 60000
# System accounts
#SYS_UID_MIN 100
#SYS_UID_MAX 499
...
# Min/max values for automatic gid selection in groupadd
#
GID_MIN 500
GID_MAX 60000
# System accounts
#SYS_GID_MIN 100
#SYS_GID_MAX 499
/etc/adduser.conf
...
# package, may assume that UIDs less than 100 are unallocated.
FIRST_SYSTEM_UID=100
LAST_SYSTEM_UID=499
FIRST_SYSTEM_GID=100
LAST_SYSTEM_GID=499
# FIRST_[GU]ID to LAST_[GU]ID inclusive is the range of UIDs of dynamically
# allocated user accounts/groups.
FIRST_UID=500
LAST_UID=29999
FIRST_GID=500
LAST_GID=29999