View Source: chage(1) - Waikato Linux Users Group

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CHAGE
!!!CHAGE
NAME
SYNOPSIS
DESCRIPTION
FILES
SEE ALSO
AUTHOR
----
!!NAME


chage - change user password expiry information
!!SYNOPSIS


__chage__


[[__-m__ ''mindays''] [[__-M__ ''maxdays'']
[[__-d__ ''lastday''] [[__-I__ ''inactive'']
[[__-E__ ''expiredate''] [[__-W__ ''warndays'']
''user''


__chage__


__-l__ ''user''
!!DESCRIPTION


__chage__ changes the number of days between password
changes 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 __-l__
option, which may be used by an unprivileged user to
determine when her password or account is due to
expire.


With the __-m__ option, the value of ''mindays'' is
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.


With the __-M__ option, the value of ''maxdays'' is
the 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
occurance can be planned for in advance by use of the
__-W__ option, which provides the user with advance
warning.


With the __-d__ option, the value of ''lastday'' is
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).


The __-E__ option is used to set a 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.


The __-I__ option is used to set the number of days of
inactivity after a password has expired before the account
is locked. A user whose account is locked must contact the
system administrator before being able to use the system
again. The ''inactive'' option is the number of days of
inactivity. A value of 0 disables this feature.


The __-W__ option is used to 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 that this functionality is not available if shadow
passwords are not enabled.
!!FILES


/etc/passwd - user account information
/etc/shadow - shadow user account information
!!SEE ALSO


passwd(5), shadow(5)
!!AUTHOR


Julianne Frances Haugh (jfh@austin.ibm.com)
----
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Last edited on Tuesday, June 4, 2002 12:21:50 am by "perry"
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