passwd.1

来自「操作系统设计与实现源码」· 1 代码 · 共 43 行

.TH PASSWD 1
.SH NAME
passwd, chfn, chsh \- change a login password, full name or shell
.SH SYNOPSIS
\fBpasswd\fR [\fIuser\fR]\fR
.br
\fBchfn\fR [\fIuser\fR] \fIfullname\fR\fR
.br
\fBchfn\fR [\fIuser\fR] \fIshell\fR\fR
.br
.de FL
.TP
\\fB\\$1\\fR
\\$2
..
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
.SH EXAMPLES
.EX "passwd" "Change current user's password"
.EX "passwd ast" "Change ast's password (super\-user only)"
.EX "chsh /usr/bin/mail" "For those who only read mail"
.EX "chfn 'Jane Doe'" "Current user is Jane Doe"
.SH DESCRIPTION
.PP
.I Passwd
is used to change your password.
It prompts for the old and new passwords.
It asks for the new password twice, to reduce the effect of a typing error.
.I Chfn
changes the full name (GECOS field) in the password file.
.I Chsh
changes your login shell.
Do not forget to copy the modified password file back to the root file system,
or the changes will be lost when the system is rebooted.
.SH "SEE ALSO"
.BR login (1),
.BR su (1),
.BR crypt (3),
.BR getpwent (3).