shadow(F)
shadow --
shadow password file
Description
/etc/shadow
is an access-restricted ASCII system file
that contains an entry for each user on the system.
The fields within each entry are separated by colons;
each entry is separated from the next by a new-line.
Unlike the /etc/passwd file, /etc/shadow does
not have general read permission.
Here are the fields in /etc/shadow:
``login_name''-
The name by which a user identifies himself or herself
when logging in.
``password''-
A 13-character encrypted password for the user, a ``lock'' string
to indicate the login is not accessible, or no string to show
that there is no password for the login.
``lastchanged''-
The number of days between January 1, 1970, and the date that the
password was last modified.
``minimum''-
The minimum number of days required between password changes.
``maximum''-
The maximum number of days the password is valid.
``warn''-
The number of days before password expires that the user is warned.
``inactive''-
The number of days of inactivity allowed for that user.
``expire''-
An absolute date specifying when the login may no longer be used.
``flag''-
A character identifying a password generator.
The encrypted password consists of 13 characters chosen from a 64-character
alphabet
(., /,
0-9, A-Z, a-z).
To update this file, use the passwd, useradd,
usermod, or userdel command.
Files
/etc/shadow
References
getspent(S),
login(C),
passwd(C),
passwd(F),
putspent(S),
useradd(ADM),
userdel(ADM),
usermod(ADM)
© 2005 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 - 02 June 2005