Do you know of any methods where I can send an input of passwords into the passwd command? For instance, I have a file which has the password stored and I want it to be sent into this command "passwd gilberteu" when it prompts for the new password and subsequently confirming the password that was entered.
I know I can use a tool called "expect" and it's free to install on a HP-UX but, I'm trying not to install stuffs on my server. Any workaround?
I've been using various versions of UNIX and Linux since 1993, and I've never run across one that showed your password as you type it in when you log in, or one that stored passwords in plain text rather than encrypted. I'm writing a script for work for a security audit, and two of the... (5 Replies)
hi
Actually the normal user as the permission of executing the passwd command due to suid program... eg consider the two users (normal user) as tom & jerry! when tom executes command as " passwd tom" no issue here...
In the same way when the same user tom uses the command as "passwd jerry" ... (1 Reply)
hi, has anyone here tried to recycle old passwords by copying something out of the passwd file and paste them back into the same passwd file ?
can it work this way ?
some of our applications passwords are expiring but they cannot be change due to application concerns, so therefore we must... (7 Replies)
Hi,
By reporting the process status with ps, any Unix user will see the command line arguments
#ps -ef
UID PID PPID C STIME TTY TIME CMD
lsc 13837 13825 0 May 11 pts/17 0:01 -ksh
oracle 4698 6294 0 12:00:40 ? 0:00 sqlplus -s system/manager
appluser 4229 4062 0 12:00:03... (2 Replies)
hai friends i have deleted passwd command using rm command i thought it will come again at the time of rebooting but it is completely deleted how to get it worked again (5 Replies)
Sorry for the duplicate thread this one is similar to the one in
https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121
Since there were no responses on the parent thread since it got resolved partially i thought to open the new... (4 Replies)
I am working with the Oracle 10.2.0.3 job scheduler on Solaris 10, and unfortunately, the scheduler executes scripts in such a way that several default shell environment variables are not defined. For example, $HOME, $USER, and $LOGNAME are missing.
How can I parse the appropriate record in... (7 Replies)
Hello All,
I am working on Sco unix version 5.0.5.
The passwd command has somehow got corrupted and is only displaying the contents of the /etc/passwd file instead of changing the password.
I wanted to know if there is any other command through which you can change the password of a user from... (5 Replies)
PASSWD(5) File formats PASSWD(5)NAME
passwd - password file
DESCRIPTION
Passwd is a text file, that contains a list of the system's accounts, giving for each account some useful information like user ID, group
ID, home directory, shell, etc. Often, it also contains the encrypted passwords for each account. It should have general read permission
(many utilities, like ls(1) use it to map user IDs to user names), but write access only for the superuser.
In the good old days there was no great problem with this general read permission. Everybody could read the encrypted passwords, but the
hardware was too slow to crack a well-chosen password, and moreover, the basic assumption used to be that of a friendly user-community.
These days many people run some version of the shadow password suite, where /etc/passwd has *'s instead of encrypted passwords, and the
encrypted passwords are in /etc/shadow which is readable by the superuser only.
Regardless of whether shadow passwords are used, many sysadmins use a star in the encrypted password field to make sure that this user can
not authenticate him- or herself using a password. (But see the Notes below.)
If you create a new login, first put a star in the password field, then use passwd(1) to set it.
There is one entry per line, and each line has the format:
account:password:UID:GID:GECOS:directory:shell
The field descriptions are:
account the name of the user on the system. It should not contain capital letters.
password the encrypted user password or a star.
UID the numerical user ID.
GID the numerical primary group ID for this user.
GECOS This field is optional and only used for informational purposes. Usually, it contains the full user name. GECOS means
General Electric Comprehensive Operating System, which has been renamed to GCOS when GE's large systems division was sold
to Honeywell. Dennis Ritchie has reported: "Sometimes we sent printer output or batch jobs to the GCOS machine. The gcos
field in the password file was a place to stash the information for the $IDENTcard. Not elegant."
directory the user's $HOME directory.
shell the program to run at login (if empty, use /bin/sh). If set to a non-existing executable, the user will be unable to
login through login(1).
NOTE
If you want to create user groups, their GIDs must be equal and there must be an entry in /etc/group, or no group will exist.
If the encrypted password is set to a star, the user will be unable to login using login(1), but may still login using rlogin(1), run
existing processes and initiate new ones through rsh(1), cron(1), at(1), or mail filters, etc. Trying to lock an account by simply chang-
ing the shell field yields the same result and additionally allows the use of su(1).
FILES
/etc/passwd
SEE ALSO passwd(1), login(1), su(1), group(5), shadow(5)
1998-01-05 PASSWD(5)