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.TH "CHPASSWD" "8" "10/01/2005" "" ""
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.nh
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.SH "NAME"
chpasswd \- update passwords in batch mode
.SH "SYNOPSIS"
.HP 9
\fBchpasswd\fR [\fIoptions\fR]
.SH "DESCRIPTION"
.PP
\fBchpasswd\fR
reads a list of user name and password pairs from standard input and uses this information to update a group of existing users. Each line is of the format:
.PP
\fIuser_name\fR:\fIpassword\fR
.PP
By default the supplied password must be in clear\-text. Default encription algoritm is DES. Also the password age will be updated, if present.
.PP
This command is intended to be used in a large system environment where many accounts are created at a single time.
.SH "OPTIONS"
.PP
The options which apply to the
\fBchpasswd\fR
command are:
.TP
\fB\-e\fR, \fB\-\-encrypted\fR
Supplied passwords are in encrypted form.
.TP
\fB\-h\fR, \fB\-\-help\fR
Display help message and exit.
.TP
\fB\-m\fR, \fB\-\-md5\fR
Use MD5 encryption instead DES when the supplied passwords are not encrypted.
.SH "CAVEATS"
.PP
Remember keep protected for reading by others fille passed to standard input
\fBchpasswd\fR
command if it contains unencrypted passwords.
.SH "SEE ALSO"
.PP
\fBpasswd\fR(1),
\fBnewusers\fR(8),
\fBuseradd\fR(8).
.SH "AUTHOR"
.PP
Julianne Frances Haugh (jockgrrl@ix.netcom.com)