PASSWD(1)PASSWD(1)NAME
chfn, chsh, passwd - change password database information
SYNOPSIS
passwd [ name ]
DESCRIPTION
This command changes (or installs) a password associated with the user
name (your own name by default).
When altering a password, the program prompts for the current password
and then for the new one. The caller must supply both. The new
password must be typed twice to forestall mistakes.
New passwords must be at least four characters long if they use a
sufficiently rich alphabet and at least six characters long if
monocase. These rules are relaxed if you are insistent enough.
Only the owner of the name or the super-user may change a password; the
owner must prove he knows the old password.
Use yppasswd to change your password in the network yellow pages. This
will not affect your local password, or your password on any remote
machines on which you have accounts.
FILES
/etc/passwd The file containing all of this information, non-NetInfo
/etc/shells The list of approved shells
/etc/yp/passwd
SEE ALSOlogin(1), passwd(5), crypt(3), yppasswd(1), netinfo(5), lookupd(8)
Robert Morris and Ken Thompson, UNIX password security
BUGS
passwd will change a local password, but not a password in the network
Yellow Pages. Refer to yppasswd(1) for information on how to change a
Yellow Pages password. Shell and finger information cannot be changed
in NetInfo using this command.
4th Berkeley Distribution October 8, 1990 PASSWD(1)