chage1User Commandschagechange user password expiry informationchage-m mindays-M maxdays-d lastday-I inactive-E expiredate-W warndaysuserchage-l userDESCRIPTIONchage command changes the number of days
between passwordchanges and the date of the last password change.
This information is used by the system to determine when a user must
change her password.
The chage command is restricted to the root
user, except for the option, which may be used by
an unprivileged user to determine when her password or account is due
to expire.
OPTIONS
The options which apply to the chage command are:
lastday
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).
expiredateSet the date on which the user's account will no longer be
accessible. The expiredate option
is the number of days since January 1, 1970 on which the
accounted is locked. 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. Passing
the number -1 as the expiredate will remove an accounts
expiration date.
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 value of 0 disables this feature. A user whose
account is locked must contact the system administrator before
being able to use the system again.
mindays
Set the minimum number of days between password changes. A value
of zero for this field indicates that the user may change her
password at any time.
maxdays
Set maximum number of days during which a password is valid.
When maxdays plus lastday is less than the current day, the
user will be required to change her password before being able
to use her account. This occurrence can be planned for in
advance by use of the option, which provides
the user with advance warning.
warndays
Set the number of days of warning before a password change is
required. The warndays option is
the number of days prior to the password expiring that a user
will be warned her 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.
NOTE
The chage program requires shadow password file to
be available. Its functionality is not available when passwords are
stored in the passwd file.
FILES/etc/passwduser account information/etc/shadowsecure user account informationSEE ALSOpasswd5,
shadow5.
AUTHORJulianne Frances Haugh <jockgrrl@ix.netcom.com>