File: //proc/self/root/etc/security/pwhistory.conf
# Configuration for remembering the last passwords used by a user.
#
# Enable the debugging logs.
# Enabled if option is present.
# debug
#
# root account's passwords are also remembered.
# Enabled if option is present.
# enforce_for_root
#
# Number of passwords to remember.
# The default is 10.
# remember = 10
#
# Number of times to prompt for the password.
# The default is 1.
# retry = 1
#
# The directory where the last passwords are kept.
# The default is /etc/security/opasswd.
# file = /etc/security/opasswd