Is it possible to have more than one password simultaneously attached to a login account in Linux?I'd like to be able to add a temporarily-authorized user to an account on my web server, but don't want to have to change the login afterwards.Even cooler would be if this could be done with a timer of some kind so the temporary password would auto-die after, say, 24 hours.
View 1 RepliesI wonder if it is possible to have two passwords for one user account in 9.10. I have a long login password (5 words about 45 characters with spaces caps). I would like to set a shorter password for Authentication, sudo, etc. While retaining the original for logging in.In short:Have long password to login to computer.Have short password for everything after login.
View 6 Replies View RelatedEach day I need to copy N files from a source location to a mirror at a specific time (where N is very large). Let's say I tell multiple CPUs to each run an rsync simultaneously on a subset of the files (network and disk bandwidth are not an issue). Ideally each CPU would be responsible for a disjoint subset of the N files, but in practice this is sometimes hard to guarantee. (Some of the source files might be "claimed" by more than one CPU.) As a result, sometimes rsync I and rsync J will both try to copy file F at the same time.
Using rsync -avz --delete --temp-dir=/tmp remote:/path/to/source/ /path/to/dest/, let's say rsyncs I and J both see this situation to start:
[Code]...
Now rsync J finishes copying but generates an error when it tries to move its version of FileB to /path/to/dest/ because there's already another FileB there that it didn't see when it started.
Does one of rsync's many options somehow handle this situation? Ideally I'd like an option that tells rsync, "Believe in yourself. You can do no wrong. Feel free to overwrite anything your little heart desires." so that it wouldn't complain about the FileB that has suddenly appeared mid-execution
I have configured httpd web server to allow each of the system users to have their own web page (using UserDir directive).At the same time I have configured ftp server to allow the users to upload their html files to the web server.With above set up my users need not have any knowledge of linux; they can work from any windows PC on the network.There is no problem in the above.However, now I need to allow my users to change their passwords. The point here to note is that the users should be able to do this even from windows PC on the network. One of the way is to configure a telnet server (or sshd). But I find that the windows PC does not have telnet client.The other idea is that I should put a php script on the server which would take user name and password from the web page and then change the password. I don't know how can the system account password be changed through script - I will have to check this out.
View 4 Replies View RelatedIs it possible to have two passwords associated with one account, one that is the actual one, and another one, a duress password, that upon entering gives a similar (desktop) environment with "decoy data"?
The idea is to have the bogus password go to an encrypted home drive that looks as if it were the real deal, but it is wiping particular sensitive (encrypted) data that is visible only with the real password in the background, so that the actual data that need to be protected are not compromised. While the person who unlocked the computer tries to find the information on it between all the rubbish files, the real files are securely wiped. The files are very sensitive in nature, so it's better to have then destroyed than have unauthorized people access them, in the event of that happening.
I happen to know that TrueCrypt has a similar option but that requires an entire decoy operating system (and I think that might be a bit conspicuous), but is there a native linux way to do it?
I'm trying to write a mass reboot script in the event of a power outage (servers go to UPS for some 15 minutes or so and shutdown uncleanly). What I have is a set of 6 common passwords which will be prompted for per ssh connection, is there any way I can cycle through this password list
Code:
#below is an example of how this is constructed, IP's are used instead of hostnames due to the possibility of a DNS server being offline.
SERVERSRM1="1 2 3"
SERVERSRM2="110 120 130"
For i in $SERVERSRM1; do ssh -n root@192.168.0.$i "hostname && shutdown -y -i5 -g0"; done;'
for i in $SERVERSRM2; do ssh -n root@192.168.0.$i "hostname && shutdown -y -i5 -g0"; done;'
Each time the code is executed I'm prompted for a password (it's always one of 6 passwords). It would be quicker to have the passwords be cycled through.
I realise this is basic code at the moment but it will eventually allow for a specific set of computers to be shut down based on what power supply they're using. Authorized keys not really an option given the scale of computers (some 300 or so).
I am having a problem with some users who get locked out after more than 3 failed attempts at login. This is exactly what I want to see - they will eventually remember those stronger passwords (maybe?) - but how do I re-enable their access? I haven't tried this on a live box but I can easily recreate the situation via vnc to the server in question and I assume the result would be the same. I like the policy that leads to this but I do need to let them back in - eventually. Where is the blacklist kept and how do I edit/reset it?
View 3 Replies View RelatedOn other editions of ubuntu server I had no problem saving multiple users and passwords with htdigest but now it seems it is only possible to save one user and password.
Code:
sudo htdigest -c /etc/apache2/passwords directory user
When I add a second username and password for the same directory it overwrites the first.
I tried to use multiple mobile broadband modems in ubuntu 10.10 and encounter a bug as follows:
When i plug in a new modem, all the attached modem is automatic go offline ( thus my connection is down), and try to redial back, sometime the redial is successful, sometime it's not.
It was working fine in ubuntu 9.10, plug in a new modem, all attached modems stay connected.
I have an ubuntu server set up in which i would like my shared media directory to be accessable with multiple usernames / passwords because I use my admisistrator username and password for samba as well, but I do not want to give out that password to all clients in my house. And, I would like to have write permissions but keep other users to read only. Is this possible or do i need to just make one separate username / password for samba sharing?
View 1 Replies View RelatedI downloaded a driver for my printer today and I opened it in the terminal. Then a window popped up saying "This opporation requires root (administrative) privileges. Please enter the administrative password below:" I typed in the same password that I use when authorizing the installation of programs from the Ubuntu Software Center and I tried it multiple times. Each time, it rejects the password. I even tried downloading something else from the software center, just to make sure the password was correct, but the system had no problem with the password when downloading from the software center. So, is my software center password different from my administrator password?
View 9 Replies View RelatedI would like port 80 to have a small daemon running on it that detects HTTP traffic and sends a small redirect response, and any other traffic begins streaming data from my VPN daemon. I was wondering if this has already been made, or any kind of technology for detecting types of traffic and allowing you to run multiple types of servers on the same port.
View 4 Replies View RelatedOur requirement is to create multiple user account with UID:-
/tmp/users.txt
rohit
guna
samsir
like this 100 user names in /tmp/users.txt file
/tmp/uid.txt
2001
3789
1000134
like this 100 UID's in /tmp/UID.txt file
The script should take input from both the files and create user account. for example user account rohit should have an UID of 2001 and user samsir should have an UID of 1000134.
I have a desktop which has both windows and ubuntu. I want to add some users in ubuntu, say Me (first user),B and C. i) Certain folders should remain inaccessible from windows partition.ii)Me should be able access both B and C home folder, but not otherwise.iii) user B can access user C, but user C cannot access user B.
View 5 Replies View RelatedI am in the process of setting up a user account for an SFTP server that will possibly be used by multiple users. I am aware of the security risk involved, but it is a necessary evil.
I am trying to come up with an effective means of monitoring the user account. So far I have a script that runs the finger command, and emails me once an hour. Is there something else that I can do to keep a close eye on the account?
Do any programs need to be installed that aren't included in the default install of Linux Mint in order for it to allow VNC connections?
View 3 Replies View RelatedI have Fedora 10 set up as a server. Occasionally it will stop allowing connections, such as ssh, http, and samba. This continues until someone hits a key on the keyboard, and then it seems to come back to life and accept connections. At this point, the date and time will be wrong. Judging from monit messages that inform me when it stops allowing connections, I think the time freezes at whatever time it is when it stops allowing said connections.
Power Management has it set for the computer to never turn off. Sleep mode is also disabled in the BIOS.
I thought it was possibly the CMOS battery, but that has been replaced and the issue persists.
Someone previously thought it might have been Network Manager, but that is disabled due to issues it has with a static IP.
I have a drive NTFS formatted drive mounted in Debian and a script set to make directories via a linux script and cron job. This was running flawlessly till recently, when I started getting 'mkdir: cannot create directory 'dirname': Operation not supported'.I have been unable to find any help with this issue online. I assume it is a NTFS mount issue. I know it isn't about file size, as the drive it 1TB.Here is my fstab for reference:Code:/dev/sdb1 /mnt/backupLocation ntfs-3g rw 0 0Do you know what the issue is here? Like I said, up until recently I have been able to create seeming unlimited directories here, but it now stops after about 7 - 10 directories have been created?
View 9 Replies View RelatedIn order for me to get started with Linux, I downloaded & installed Virtualbox (V3.2.10) on my WinXP machine, and downloaded the Puppy Linux image from as per[URL].. When I start up the VM, I get a GRUB menu allowing me to boot
Quote:
Linux (on /dev/hda1)
Install GRUB to floppy disk (on /dev/fd0)
Install GRUB to Linux partition (on /dev/hda1)
I tried the first option, which results in Quote:
Booting 'Linux (on /dev/hda1)'
root (hd0, 0)
Filesystem type is ext2fs, partition type 0x83
kernel /boot/vmlinuz root=/dev/hda1 ro vga=normal
[Code]...
Sometimes I connect to my Debian box from another computer (using SSH on Cygwin or Linux), and once ina while I want to run some console apps. And sometimes some of these apps might complain about "another intance, Error: an instance of newsbeuter is already running (PID: 2496)". Is there a work around for this issue at all(without killing the original instance") ? The reason I do not want to kill the app because there might be 2 users connected to the same machine that might be using the same app.
View 1 Replies View RelatedI've been struggling with what should be an easy change on our Squid proxy.Basically I'm attempting to allow the ranges:
IP range is:
209.197.0.0/19
Address: 209.197.0.0
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I successfuly installed CentOS to my Dell laptop using CentOS_5.5_Live_DVD.iso and mounting it to a USB flash drive with iso2usb.exe, Now my laptop will Not load CentOS when I remove the USB flash drive, I get a messege saying "no system found".
View 5 Replies View RelatedI've hit a wall here; I'm attempting to find some way by which to view files and cd into directories on a device mounted read-only. So I need the permissions to read, write, execute (and the same with directories), but chmodding is out of the question because I don't want to alter the drive one iota.
I guess what I could do--what I was thinking of initially--was to dupe the whole drive and then mess with permissions. This wouldn't affect the original (actually I'm working on a duplicate of the original, but I'm treating it as if it were the original) but I was hoping for something that would maintain data integrity. This is a forensic application and not altering the data is very important.
I need to allow non-root users to read/write on an ext3 partition.
Below is the relevant output from fdisk -l
Code:
The partition in question is /dev/sda4 and it is mounted as /Data (setup during installation).
I just upgraded to Ubuntu 10.04 yesterday on a headless home server. I use the server for a variety of purposes, and what I don't know how to do via SSH I've alway been able to do through VNC. However, since the upgrade vino-server will no longer run if there isn't a monitor attached. Before it used to start up without a problem. Even by attempting to run the server via SSH gives me a "could not load display" error. Summary: I need to get vino-server running at boot time on a server with Ubuntu 10.04, without a monitor attached.
View 4 Replies View RelatedI have bought a new motherboard (MSI 785GT-E63). I already have an old CRT monitor connected to it. After I install a linux OS to it, my monitor will display that it is:
Out of frequency.
Current frequency is 89Hz. The
operating output of my monitor is
(around) 60-70Hz.
I would like to get this thing work. How can I let my CRT display properly?I was thinking of lowering down video frequency output of my motherboard, but I can't find any settings on my BIOS setup. Additional info:
My monitor is attached directly to
the built-in video adaptor of my
motherboard. (No additional video
[code]....
I want to check all the child processes attached to a specific process. Say for a example; my process is a java process. Then I wanna know what are the processes attached to that java process. At the moment I use the command # ps aux|grep java; this gives the details about the currently running java process. So I can kill the whole java process using #kill -9 {pid} ...but there are sub processes attached (I guess child processes) to java process. I wanna view all of them & kill whatever the process I like not the whole thing. I'm using Red hat 5 enterprise edition. and currently a weblogic application server is running on that.
View 2 Replies View RelatedI have a storedge 3511 array attached to a centos 4 system and need to upgrade to redhat 5. 1) How can I find out how the array was attached to the system? and/or 2) What do I need to do during the install for the array to be recognized?
fdisk -l output:
WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sde: 4998.3 GB, 4998352076800 bytes
255 heads, 63 sectors/track, 607681 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sde1 1 267350 2147483647+ ee EFI GPT
I am not a Linux user but and learning about it in a class and thought I would check it out. My teacher said that two linux users cannot have the same passwords but never explained why?
View 5 Replies View RelatedI was wounder if there is a way to add two different passwords for one user.
View 14 Replies View Related