...the other fields probably don't mean much. I don't know what the 10957 is but that's sure not root's uid or gid.
My man page on "shadow" describes a C struct which has fields that correspond to the /etc/shadow file. What threw me off initially is that these fields are in days, not seconds, since the epoch.
Code:
DESCRIPTION
shadow manipulates the contents of the shadow password file, /etc/shadow. The
structure in the #include file is:
struct spwd {
char *sp_namp; /* user login name */
char *sp_pwdp; /* encrypted password */
long int sp_lstchg; /* last password change */
long int sp_min; /* days until change allowed. */
long int sp_max; /* days before change required */
long int sp_warn; /* days warning for expiration */
long int sp_inact; /* days before account inactive */
long int sp_expire; /* date when account expires */
unsigned long int sp_flag; /* reserved for future use */
}
The meanings of each field are:
· sp_namp - pointer to null-terminated user name
· sp_pwdp - pointer to null-terminated password
· sp_lstchg - days since Jan 1, 1970 password was last changed
· sp_min - days before which password may not be changed
· sp_max - days after which password must be changed
· sp_warn - days before password is to expire that user is warned of pending
password expiration
· sp_inact - days after password expires that account is considered inactive and
disabled
· sp_expire - days since Jan 1, 1970 when account will be disabled
· sp_flag - reserved for future use
I inhereted a project server that has UNIX installed with a SCO OS. I am trying to learn UNIX but I cannot go beyond the password and login. The original engineers have left the company and nothing was ever written down. How can access our server? (1 Reply)
--------------------------------------------------------------------------------
How can I tranfer an OS/ Unix (from old HD to new HD / include all files saved )
Could anyone help me out. :confused:
Thanks (0 Replies)
Hi,
I would like to connect UNIX server to UNIX server through shell scripts
and i have some concepts . But i am totally confused how to connect UNIX
server to UNIX server throuth running a script. It will be greatful to me if
any buddy will help me.
Thanks in advance.
Phatan:) (2 Replies)
Hi
We have over 100 unix servers. They include linux,solaris,aix,hp and sgi. I use telnet for some and ssh for rest. Note: none of this server has expect which i can use to update.So i am looking for expert who can help me with their script or guide me write KSH script to automate this.
Thank... (6 Replies)
Hi Gurus,
I'm a unix newbie and I would like to connect to multiple unix servers from unix server using shell script i.e from server a to server b,c,d etc. I want to copy the files from unix server a to server b, c, d. I can access staright using ssh without the need to have password and user... (5 Replies)
Hi All,
Let me know how can i find and delete files from one unix server to another unix server which are 'N' days older.
Please note that I need to delete files on remote unix server.So, probably i will need to use sftp, but question is how can i identify files and folders which are 'N'... (2 Replies)
Hi,
I am trying to automate the process of fetching files from remote server to local server through sftp. I have the username and password for the remote solaris server. But I need to give password manually everytime i run the script.
Can anyone help me in automating the script such that it... (3 Replies)
Hi ,
I am using redhat linux 5.I.I need a command or script which need to login from one server to another without asking password.This can be done even providing password on the command line is also fine.I have tries sshpass but it didn't work.ssh key generations is not preferred here.
... (7 Replies)
Can someone help in writing some script through which I can transfer file (scp) from root user in abc server to crt user in hfg server and can give the crt user password in script itself so that it doesn't prompt me every time for password (4 Replies)
Hi
I'd like to ssh from an AIX OS server ( v5.3) to a Fabric OS server ( v6.1.2 ) without password.
I tried using dsa or rsa keys but it didn't work, the aix server still asked for the password.
Somebody help, please :(:(:( (8 Replies)
Discussion started by: bobochacha29
8 Replies
LEARN ABOUT MOJAVE
shadow
SHADOW(5) File Formats and Conversions SHADOW(5)NAME
shadow - shadowed password file
DESCRIPTION
shadow is a file which contains the password information for the system's accounts and optional aging information.
This file must not be readable by regular users if password security is to be maintained.
Each line of this file contains 9 fields, separated by colons (":"), in the following order:
login name
It must be a valid account name, which exist on the system.
encrypted password
Refer to crypt(3) for details on how this string is interpreted.
If the password field contains some string that is not a valid result of crypt(3), for instance ! or *, the user will not be able to
use a unix password to log in (but the user may log in the system by other means).
This field may be empty, in which case no passwords are required to authenticate as the specified login name. However, some
applications which read the /etc/shadow file may decide not to permit any access at all if the password field is empty.
A password field which starts with an exclamation mark means that the password is locked. The remaining characters on the line
represent the password field before the password was locked.
date of last password change
The date of the last password change, expressed as the number of days since Jan 1, 1970.
The value 0 has a special meaning, which is that the user should change her password the next time she will log in the system.
An empty field means that password aging features are disabled.
minimum password age
The minimum password age is the number of days the user will have to wait before she will be allowed to change her password again.
An empty field and value 0 mean that there are no minimum password age.
maximum password age
The maximum password age is the number of days after which the user will have to change her password.
After this number of days is elapsed, the password may still be valid. The user should be asked to change her password the next time
she will log in.
An empty field means that there are no maximum password age, no password warning period, and no password inactivity period (see below).
If the maximum password age is lower than the minimum password age, the user cannot change her password.
password warning period
The number of days before a password is going to expire (see the maximum password age above) during which the user should be warned.
An empty field and value 0 mean that there are no password warning period.
password inactivity period
The number of days after a password has expired (see the maximum password age above) during which the password should still be accepted
(and the user should update her password during the next login).
After expiration of the password and this expiration period is elapsed, no login is possible using the current user's password. The
user should contact her administrator.
An empty field means that there are no enforcement of an inactivity period.
account expiration date
The date of expiration of the account, expressed as the number of days since Jan 1, 1970.
Note that an account expiration differs from a password expiration. In case of an account expiration, the user shall not be allowed to
login. In case of a password expiration, the user is not allowed to login using her password.
An empty field means that the account will never expire.
The value 0 should not be used as it is interpreted as either an account with no expiration, or as an expiration on Jan 1, 1970.
reserved field
This field is reserved for future use.
FILES
/etc/passwd
User account information.
/etc/shadow
Secure user account information.
/etc/shadow-
Backup file for /etc/shadow.
Note that this file is used by the tools of the shadow toolsuite, but not by all user and password management tools.
SEE ALSO chage(1), login(1), passwd(1), passwd(5), pwck(8), pwconv(8), pwunconv(8), su(1), sulogin(8).
shadow-utils 4.5 01/25/2018 SHADOW(5)