shadow/man/chpasswd.8

.\"$Id: chpasswd.8,v 1.17 2004/12/12 20:49:52 kloczek Exp $
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.TH CHPASSWD 8
.SH NAME
chpasswd - update passwords in batch mode
.SH SYNOPSIS
\fBchpasswd\fR [\fBoptions\fR]
.SH DESCRIPTION
\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:
.sp 1
	  \fIuser_name\fR:\fIpassword\fR
.sp 1
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
The options which apply to the \fBchpasswd\fR command are:
.IP "\fB-e\fR, \fB--encrypted\fR"
Supplied passwords are in encrypted form.
.IP "\fB-h\fR, \fB--help\fR"
Display help message and exit.
.IP "\fB-m\fR, \fB--md5\fR"
Use MD5 encryption instead DES when the supplied passwords are not encrypted.
.SH CAVEATS
Remember keep protected for reading by others fille passed to standard input
\fBchpasswd\fR command if it contains unencrypted passwords.
.SH SEE ALSO
.BR passwd (1),
.BR newusers (8),
.BR useradd (8)
.SH AUTHOR
Julianne Frances Haugh (jockgrrl@ix.netcom.com)