The options which apply to the chage
command are:
-d
, --lastday
LAST_DAY
Set the number of days since January 1st, 1970 when the
password was last changed. The date may also be expressed in
the format YYYY-MM-DD (or the format more commonly used in
your area). If the LAST_DAY is set to 0 the user is forced to
change his password on the next log on.
-E
, --expiredate
EXPIRE_DATE
Set the date or number of days since January 1, 1970 on which
the user's account will no longer be accessible. The date may
also be expressed in the format YYYY-MM-DD (or the format
more commonly used in your area). A user whose account is
locked must contact the system administrator before being
able to use the system again.
For example the following can be used to set an account to
expire in 180 days:
chage -E $(date -d +180days +%Y-%m-%d)
Passing the number -1 as the EXPIRE_DATE will remove an
account expiration date.
-h
, --help
Display help message and exit.
-i
, --iso8601
When printing dates, use YYYY-MM-DD format.
-I
, --inactive
INACTIVE
Set the number of days of inactivity after a password has
expired before the account is locked. The INACTIVE option is
the number of days of inactivity. A user whose account is
locked must contact the system administrator before being
able to use the system again.
Passing the number -1 as the INACTIVE will remove an
account's inactivity.
-l
, --list
Show account aging information.
-m
, --mindays
MIN_DAYS
Set the minimum number of days between password changes to
MIN_DAYS. A value of zero for this field indicates that the
user may change their password at any time.
-M
, --maxdays
MAX_DAYS
Set the maximum number of days during which a password is
valid. When MAX_DAYS plus LAST_DAY is less than the current
day, the user will be required to change their password
before being able to use their account. This occurrence can
be planned for in advance by use of the -W
option, which
provides the user with advance warning.
Passing the number -1 as MAX_DAYS will remove checking a
password's validity.
-R
, --root
CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the
configuration files from the CHROOT_DIR directory.
-W
, --warndays
WARN_DAYS
Set the number of days of warning before a password change is
required. The WARN_DAYS option is the number of days prior to
the password expiring that a user will be warned their
password is about to expire.
If none of the options are selected, chage
operates in an
interactive fashion, prompting the user with the current values
for all of the fields. Enter the new value to change the field,
or leave the line blank to use the current value. The current
value is displayed between a pair of [ ] marks.