General :: Delete /etc/passwd And Recover It With /etc/passwd - From Runlevel 1 The Lastly Created User Is Not Having His Account After Recovery?
Jan 14, 2011
we know that /etc/passwd - is a replica of /etc/passwd file and acts as a backup in any damage done to /etc/passwd file..i have observed a strange thing in RHEL 5.4....for example... if /etc/passwd has 100 accounts.. then /etc/passwd - is having only 99 accounts....when i add 101 useraccount with "useradd" then /etc/passwd has 101 accounts and /etc/passwd is having the 100th account of /etc/passwd - ..when i delete /etc/passwd and recover it with /etc/passwd - from runlevel 1 the lastly created user is not having his account after recovery.. what is the solution? this is same case even with /etc/shadow and /etc/shadow -
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May 16, 2011
I have just got my Openldap server up and running howerver, I admit I'm a little confused about authenticating a client mechine to the server. When I create an account on the ldap server, does this mean that the server creates a user account in the /etc/passwd, or somewhere else on the server?
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Aug 10, 2010
Not able to login to a user account, even after clearing the password from root using passwd -d
[root@ivrsdb1_pnq /]# passwd -S oracle
Password locked.
[root@ivrsdb1_pnq /]# passwd -u -f oracle
Unlocking password for user oracle.
[code]....
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Apr 11, 2010
Unfortunately i lost my passwd file...so who to recover that.
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Feb 8, 2010
When I use ls -al to show files downloaded from internet,
-rw-rw-r-- 1 427 6011 7544 Jul 20 2006 INSTALL
-rw-rw-r-- 1 427 6011 4229 Dec 9 15:36 Makefile.am
-rw-rw-r-- 1 427 6011 27893 Dec 10 17:47 Makefile.in
I can see the owner and group ids are shown because there are no corresponding entries in /etc/passwd and /etc/group respectively. I don't know much about linux and dare not to edit these files, I wonder if somebody already knows whether linux would map the owner id of files coming from other computers to the account name in /etc/passwd and display them when necessary (for example, when using ls -al)?
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Dec 20, 2010
All servers mentioned below run OpenSuSE, either 10 or 11.I am currently working on a few scripts that are meant to be used as part of a continuous integration setup. I am trying to keep these scripts reasonably secure, and so I have made sure that all the servers run these scripts only as a specific user (user1) that has permissions to basically nothing else. The problem I am currently running into is that I need to start and stop tomcat as user1 but this user doesn't have permissions to the tomcat rectory (only tomcat has execute permissions). I have a temporary workaround in place while I work on the scripts (I have an SSH key in place that allows me to SSH from user1o tomcat without a password and execute my commands that way) but it is not very secure. I have tried adding the following line to /etc/sudoers:
Code:
tomcat localhost = NOPASSWD: /opt/tomcat/bin/startup.sh, /opt/tomcat/bin/shutdown.sh
but it doesn't work as I expected it to. I tried a few different syntaxes for that line,
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Nov 12, 2010
If you don't know which shell you are using , either check the line for your account in /etc/passwd
what is that suppose to mean? how do i check it? do i check it from the terminal?
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Oct 15, 2010
How we can take username from the /etc/passwd which have UID more than or equal to 500.
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Mar 25, 2011
How I can do a ftp connection putting the user and passwd, and I would do! Today, I need to know how can I do this, but in SFTP!
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Dec 25, 2010
when loggin as a normal user and search for a file passwd under /etc. i get few errors with permission denied.how to ignore this permission denied errors.
csh hostname 109 % find . -name passwd
find: ./lvm/backup: Permission denied
find: ./lvm/archive: Permission denied
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May 15, 2010
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Password: su: /bin/bash:/sbin: No such file or directory i cannot delete that entry from /etc/passwd as i cannot login as root.
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Jul 28, 2010
In what cases would a user appear in /etc/shadow and not /etc/passwd
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Apr 22, 2010
we are trying to make a policy decision whether to go with SSH user/passwd or PPK secure key ? our servers are hosted remotely by a hosting service. we were wondering which of these two models are more secure.e.g. i would tend to think that user/passwd with account lockouts upon failed attempts would be more secure because the other option exposes your server in case someone sneaks the PPK file or steals your whole computer.however, what makes me doubt myself is that Amazon Web Services EC2 cloud hosting uses PPK by default (although an instance's SSH config can be change to accommodate logging in but they don't endorse it).
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Jan 26, 2011
Is it possible to log in secure shell (openssh ) using a username and password which is not present in "/etc/passwd" .The shell created after authentication should be owned by the logged in user . Is it possible to store the user infromation like uid , gid , home dir , shell in some remote machine instead of /etc/passwd and then retrive the these these information when a session is created for the logged in user .
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Apr 23, 2010
I am using Red Hat and was wondering how to disable username and password only login and require that a PPK secure key file be used for authentication ? I can log in using the secure private key and the public key that is in ~/.ssh/authorized_keys but i can still log in using the plain username and password login.
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Feb 4, 2010
I started to work on building a ftp by vsftpd in our lab (that's only for our lab members). I am going to setup some the virtual users for each of the member. We have a CentOS5 (without upgrade after the fresh installation). I try several ways to setup the vsftpd for virtual users. 1) with db4 2) with mysql 3) without database and use htpasswd. But all fails. Actually, I don't want to use database, so I am going to find out the reason of failure on 'htpasswd' method
My vsftpd is installed in /etc/vsftpd (for only using ftp account, it is no problem to login).
1) I setup an account called vftpuser and build the corresponding home (/home/vftpuser), and then I setup another account call usera and also create a directory within /home/vftpuser.
2) I use htpasswd to add passwd to usera and store the passwd in /etc/vsftpd/passwd.
3) I added the name of usera to /etc/vsftpd/user_list
4) I create a directory /etc/vsftpd/user to store a unique conf for each user (for usera, the conf named usera) which contains the local root for users, which is
[Code]....
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Sep 24, 2009
I am trying to write a remote access module. Is there any function in linux where I can give string (password entered by user) and compare it with the actual user password stored in /etc/shadow. Since the password is stored encrypted in /etc/shadow I cannot parse and compare. So I want some method to compare if my user entered the correct password..Is there any function for that..
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Feb 18, 2010
is it possible to create a shell script that adds user and password in the passwd and smbpasswd?
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Mar 13, 2011
i have just updated to openSuSE 11.4 [64 bit]; rkhunter is giving these Warnings :
Warning: User 'rtkit' has been added to the passwd file.
Warning: User 'pulse' has been added to the passwd file.
Warning: User 'statd' has been added to the passwd file.
Warning: Changes found in the group file for group 'audio': User 'pulse' has been added to the group
Warning: Group 'rtkit' has been added to the group file.
Warning: Group 'pulse' has been added to the group file.
Warning: Group 'pulse-access' has been added to the group file.
Warning: Suspicious file types found in /dev: /dev/shm/initrd_exports.sh: ASCII text
Warning: Hidden directory found: /dev/.sysconfig
Warning: Hidden directory found: /dev/.mount
Do these look Normal, Are these False-Positives??
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May 20, 2010
Well we all know that it holds passwords. But cat-ing it gives out nothing. Not even encrypted gibberish. So how exactly is a password stored in this? Is this like a device file or something?
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Jan 5, 2010
If I configure a crontab like below.12 3 12 4 4 cat /etc/passwd I know that the cat command will get executed at the configured time. But where will the output of that command go?If it is something like below, then out put will be routed to /tmp/file1.12 3 12 4 4 cat /etc/passwd > /tmp/file1
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Sep 18, 2010
I was doing some experiment about resource-accessing. By mistake, I executed this command,$ sudo mv /etc/passwd /etc/passwd.bakThen I could not execute any command with privilege(eg. sudo mv /etc/passwd.bak /etc/passwd). When I shut the system down, I could not boot it any more.
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Aug 10, 2010
I got a user account on a linux network. But when I look in the /etc/passwd file, I don't see my username there. Where would I find my username
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Jun 25, 2011
I'm running a small network of 20 PC's (slackware), I had previously used NIS and can't really be bothered with ldap it's a bit of hassle. I do not need a centralised database just a login auth system.On the server I make a folder called /sec and symlink passwd, group and shadow into it.I export this via nfs.On the workstation I create a folder /sec, move the passwd, group and shadow file into it and then symlink them back into the /etc folder.On bootup, the rc.local mounts server /sec over the top of workstation /sec. If it fails it falls back.I wasn't sure if I could just mount /sec on the workstation and then temporarily symlink group,passwd,shadow over the top of the /etc/shadow etc
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Jun 6, 2010
Is there a command for showing only the readable signs uit of /usr/bin/passwd?
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Jun 18, 2010
I was looking around the files in /etc/ to see what they were and what they said, then I noticed there was two files called passwd, which confused me a lot for a second then I noticed one of them was actually passwd-.I compared them and they only differed by one line:
< games:36:35:added by portage for gemrb:/usr/games:/bin/bash, which was in passwd but not passwd-.Should these files both exist? If yes, why, what does having both do? If no, then its safe to say I can just delete passwd-
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May 4, 2010
i am executing the passwd command on a solaris 10 OS and every time its aborting (as shown below). how to troubleshoot this..
root@osssvr-1 # passwd ftp
New Password:
Re-enter new Password:
Abort
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Jul 29, 2010
What is the equivalent of Solaris's passwd command in Linux?
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Oct 7, 2010
I deleted root from passwd and shadow file.Can I crate a new root user?
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Sep 7, 2010
Recently installed some application which screwed the default common-passwd file and has put some restrictions on the passwords which I could setThe present file looks like this
Code:
#password required pam_passwdqc.so min=disabled,8,8,8,8 passphrase=0 enforce=users
password required pam_passwdqc.so min=1,0,0,0,0 passphrase=0 enforce=none random=0
[code]...
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