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5 .\" Manual: User Commands
6 .\" Source: User Commands
8 .TH "CHAGE" "1" "06/06/2006" "User Commands" "User Commands"
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14 chage \- change user password expiry information
17 \fBchage\fR [\fIoptions\fR] \fIuser\fR
22 command 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 his/her password.
25 The options which apply to the
29 \fB\-d\fR, \fB\-\-lastday\fR \fILAST_DAY\fR
30 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).
32 \fB\-E\fR, \fB\-\-expiredate\fR \fIEXPIRE_DATE\fR
33 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.
39 will remove an account expiration date.
41 \fB\-h\fR, \fB\-\-help\fR
42 Display help message and exit.
44 \fB\-I\fR, \fB\-\-inactive\fR \fIINACTIVE\fR
45 Set the number of days of inactivity after a password has expired before the account is locked. The
47 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.
53 will remove an account's inactivity.
55 \fB\-l\fR, \fB\-\-list\fR
56 Show account aging information.
58 \fB\-m\fR, \fB\-\-mindays\fR \fIMIN_DAYS\fR
59 Set the minimum number of days between password changes to
60 \fIMIN_DAYS\fR. A value of zero for this field indicates that the user may change his/her password at any time.
62 \fB\-M\fR, \fB\-\-maxdays\fR \fIMAX_DAYS\fR
63 Set the maximum number of days during which a password is valid. When
67 is less than the current day, the user will be required to change his/her password before being able to use his/her account. This occurrence can be planned for in advance by use of the
69 option, which provides the user with advance warning.
75 will remove checking a password's validity.
77 \fB\-W\fR, \fB\-\-warndays\fR \fIWARN_DAYS\fR
78 Set the number of days of warning before a password change is required. The
80 option is the number of days prior to the password expiring that a user will be warned his/her password is about to expire.
82 If none of the options are selected,
84 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
91 program requires a shadow password file to be available.
95 command is restricted to the root user, except for the
97 option, which may be used by an unprivileged user to determine when his/her password or account is due to expire.
101 User account information.
104 Secure user account information.
109 command exits with the following values:
118 invalid command syntax
121 can't find the shadow password file