Ubuntu :: Identifying CD Contents Without Booting With It?
Nov 6, 2010
So I have a bunch of CDs I have burnt over the past year or two, and only problem is, I would burn them, use it and forget about it. I never bothered labelling it. Now, I want to label them appropriately. Is there any way I can find out the following just looking at the CD contents-
1. Distribution - lucid / karmic / etc
2. Architecture - amd64 or i386
3. Type - server, desktop, alternate etc
I know if I boot into the machine from the CD drive, I can find out, but I prefer not having to do that
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Dec 29, 2010
Tried to test the 10.10 Netbook's Unity but after keying the password I got a "Unity missing driver" without any identification of the driver. Is it available in the repositories? How can I identify it to install it? Why isn't it included?
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Jul 13, 2011
I have a setup with a mythtv backend that streams media via the built in upnp to two xbox 360s. This works perfect at the moment. However I need a command/script that can identify if either of the two xbox's are connected via upnp. I need this so that I can have the system auto shutdown if no one is connected using the existing mythtv sleep wake features. (Basically if a script returns 1 then dont shutdown if returns 0 then shutdown.)
Code:
if upnp is connected then
dont shutdown
else
shutdown
fi
Thanks
Chris
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Aug 3, 2010
I've installed Ubuntu Server, and Webmin following this guide, and all is well so far... I've mounted some drives with some pre-existing data on them, and can view the data on those drives. But I have one drive that I can't seem to mount, and I'm pretty sure there's data on it. But I can't seem to find how to identify what format the data is in, ie.. ntfs, ext2, ext 3, etc. Its likely pretty simple, but how can you identify the drive format before you attempt to mount it?
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Sep 7, 2010
got the problem with multiple ssh-tunnels. The case is:I have 1 server running Slackware 13.0 with external ip and few windows-machines. inetd daemon is running on the server, my script is listening on port 2345. I create multiple ssh-tunnels from client machines to the 2345 port of the server in order to initiate script execution. For debugging reasons the script simply echoes the incoming information to the connection initiator. This is how the connection is initiated.
Code:
ssh <user>@<my_server_IP> -L 5555:<my_server_IP>:2345
echo "hello"|nc -vn 127.0.0.1 5555 (a port on a client-machine, that is forwarded to <my_server_IP>:2345)
gives "hello" output.
Code:
client1 port 5555|----ssh-tunnel---- eth0|-------server---------------|
[Code]...
The problem is that i need my script to execute some commands (registry parsing) on a remote client machine with winexe utility. So I need to identify each tunnel or each connection in order to execute the command on each of the client workstations. I need at least to have access to some ID of the ssh session or a tunnel, through which a certain connection was initiated and then use it to create a reverse tunnel or just connect to certain client via that client`s tunnel.
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Feb 4, 2010
Starting from January, my Internet connection has become "unstable". I mean that I get occasional interruptions of the connection. This is particularly annoying while listening to a webradio or using voip. Of course, prior to January 2010, I could stay hours or days without interruptions. Now, I have to reconnect manually every 5 min to the service although the reconnection to the ISP is done immediately. So, before I take my axe and visit the office of my ISP, I would like identify where is that connection drop happening. Is it at my pc? at the ADSL modem/router? or the ISP? I use a wireless connection with WPA to my router. Then, the router is basically an ADSL modem. I am running Kubuntu locally. How can I follow up on the network status between different elements and see who is cutting off my connection?
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Dec 23, 2010
How do we check as to how many links have been created that point to a particular file?
Let's say there is this file /work/contacts.dat
and we have, let's say, 10 soft links that have been created by different users in their home directories. Now how can I figure by looking at the file /work/contacts.dat that there are 10 (soft or hard)links pointing to this particular file so that I know that it is being used or refered to by those many users and before deleting it I can check with them.
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May 31, 2010
I just encountered a very weird issue and I am having hard time replicating and identifying the root cause. We have one RH9 server and we received an alert that the /var reached 85%, I checked and found out that /var/log/audit.d is occupying most of the space. It has a lot of files inside it consisting file size of 21MB each everyday. I ask the customer if can housekeep and it eventually climbed up to 100%. My colleague did some house keeping but what he did was he compressed the audit.d directory and remove it.
After that users are complaining they cannot telnet to the server even though the service is on. I have recreated the audit.d directory and restarted the xinetd as usual. Still the same problem. And the weird thing is that I cannot even switch to any user from the root. I tried to do "su - someuser" but it hangs there without doing anything. I also tried to telnet, it will ask for login and password but same thing it hangs in there. Did some restart on xinetd and did "chkconfig telnet off" "chkconfig telnet on" but with no success. Could this be caused by the deletion of audit.d? Or is the 100% utilization of /var the system could not cope up? The good thing is everything worked fine after restart. But still the root cause is unknown. If I check /var/log/secure it shows the user being authenticated though it is not getting any session. /var/log/messages also does not reveal anything.
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Sep 1, 2011
Ubuntu has been reporting a System error problem but when it try's send a report to your servers, it fails due to it's failure of identifying the packet id, i honestly have no idea of how to go about fixing this problem or even identifying the packet that's broken, please do help, as now my Apache server's not working properly, and a couple of other programs are getting affected by this, event installing and updating s an issue.
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Jul 18, 2010
I'm looking for the best way to identify what distro the user is running and what the desktop environment is running. I'm building some pipeline tools for a visual effects studio and need some generic commands for passing paths to the user's file manager from within Maya and Nuke. The workstations I have access to are FC12 with xfce4 so for that I'd pass a system command :
Code: ("thunar "+$path)I've been identifying Fedora workstations with:
Code: # cat /etc/issue
Is there a command to identify what the current window manager is? Preferably something generic that'll work on the other distros as well.
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May 6, 2011
a. How can I determine the hardware type of the machine where the linux is running ?
b. Also, what exactly is the difference between machine hardware name and hardware platform ? (uname -m and uname -i)
c. Output from my machine shows,
- uname -i as i386 and
- uname -m as i686
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Jun 14, 2010
I just read and learned about logical volume management today. I have a server running RHEL5.4, LVM2. I have 1 physical volume, with one volume group, and 3 logical volumes. I have no free extents, nor do I have any in my volume group (not sure if it's possible to have free in one and not the other anyway), and I am running out of space on one of my logical volumes. Doing a df -h shows 96% of 9.7GB used on /dev/mapper/MainVG-root, mounted at /. So here's the stupid question: how can I find out what directories/files are taking up what space within this logical volume? As I said I have 3 all together, and the other 2 are mapped to /var and a /var pgsql sub-directory. I figured I could get the sizes of the other directories under / and drill down accordingly, but I seem to be missing some basic rule because the commands I am using and the values I am getting don't add up.
For example, it seemed logical to me to do an ls -lsh on / to try and identify the largest directories. Each directory is listed as being ~4-8K in size. That doesn't make sense to me. So I decided to do a du -sh on each directory. Having done this on all of the / sub-directories and added up those values, there is not enough reported usage here to equal 8.9GB of used space (as df -h / reports).how they would find out how the 9.7GB here is being allocated? Preferably without scripts as I am not ready to add a layer of complexity to this yet without understanding some fundamentals.
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Dec 23, 2008
I boot linux off a USB stick on many different computers with different hardware. How can I determine in a script which devices eth0, eth1, wlan0 exist and which hardware devices they apply too? Sometimes a wireless card is wlan0, other times it is eth1 or even eth3! The proc/net/dev file does not inidicate which hardware is installed.
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Dec 12, 2009
following on from [URL] I was having a little think about how to make this concept more secure. its easy enough to separate known and unknown clients out via MAC address. but that system is easier to break than it is to set up either, sniff out a mac address already connected to the system, and spoof that address.or, more simply, set a static IP on your wifi device, and avoid the redirection completely. so, is anyone aware of a relatively straight forward setup that would allow me to identify clients on my network without relying on MAC address, would more forcefully separate out known and unknown hosts (vlan??). As well as doing so without alerting them to the fact, and without requiring known hosts to do anything special, or install software. Or requiring any more hardware than I have already. (hardware = a debian box with 2 NIC's acting as a gateway between all internal network, and the billion router which handles the outside world not getting in, and a WAP attached to the internal side of the network. also somewhere I have a wifi card that I could attach to the server to replace the AP) I assume some sort of authentication mechanism is required, but I dont know much more past that.
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Dec 20, 2010
identifying the number of cores each processor is running.
I have checked /proc/cpuinfo but i dont find any core details inside it and I can find only no of processor and its speed.
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May 7, 2011
1. Every Sunday2. Find all files older than 1 day3. Gzip these file4. Tar up the gzipped files into one tar file.5. Name the tarball with a date stamp indicating what day it was created, so we know that week's files are in the file
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Jun 24, 2010
i decided to install ubuntu in my PC,i downloaded the .ISO image and i installed it in my USB. After trying it and all that i observed that i really liked it and i decided to formally install it to my computer in the hard drive. When i reached the partition thing,i selected to dual boot with Vista and select between each them in every startup,when i clicked FORWARD it gave me an error which i did not read(because,again im a noob) so i clicked cancel.
Today i wanted to go through the process again and now really install it,so again i went to the time zone part and i clicked forward but then,instead of taking me straight to the partition phase,it appeard a window saying "The installer has detected that the following disks have mounted partitions: /dev/sda ...." I clicked yes,to unmount this partitions so it took me to the partition thing,once there i selected the option to install Ubuntu with Vista and select between them i neach startup,then i clicked forward and went to the username/computer name process,once i finished i continued to the next part,the installation,but i selected to import all of my WIndows VIsta default user data,after that i clicked forward and went to the installation process,i went down stairs to eat soemthing while it finishes,i came back and it was finished,it asked me to reboot so i clicked in Restart Now.
When it tried to boot,appeared an error saying: Error: no such devide found: #################### Grub load(or something like that) grub rescue: and it was a command line,since there i havent been able to boot into vista or Ubuntu,im really scared because is the first thing related to OS installing ive done,so i booted my USB and ran the trial and right now im trying to find out what to do from that trial version.
I just went to the INSTALL UBUNTU 10.04 LTS application under the System>Administration Menu and found out that in the partition phase the Install and allow to select between both systems in eahc startup option,i dont know what to do,i foudn out that my HD has still all its data(MUsic/Videos/Folders/Programs/ect.)its just that i cannot boot from it. Also in GParted it appears as /dev/sda1/ and a warning icon besides it,also when i go into information, thers this warning there [URL]
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Jun 1, 2011
I am in a situation to boot fedora 15 live cd in to command line mode, not graphical mode, for some testing purpose. how to change argument during booting mode
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Jan 18, 2010
I've been searching the forums for any posts that cover my problem, but most of the booting problems I've found are different from mine.Anywho, the situation:ell laptop, 2 partitions, first is Windows XP, second is Ubuntu Karmic.Whenever I turn on my computer the first loading screen that shows up (is this the BIOS? Excuse my little knowledge of this stuff), before GRUB loads, is really slow. It takes about a minute to load.However, whenever I restart from my XP partition, it suddenly loads fast! And this does not happen when restarting from my Ubuntu partition or anything
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Jan 6, 2011
I am using a linux kernel 2.6.36 using mips architecture. I have succesfully booted the machine through Flash memory, but it is not booting through nfs. It is getting stuck at the stage where the image starts loading. In short the vmlinux.img file is being copied properly to nfsroot but the image is not loading.
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Jan 27, 2011
Ubuntu 10.10, when I Open My_Data_Disk to see the CD contents, I get the SAME contents of the FIRST CD/DVD I opened; that is, the contents do NOT change when I insert other CDs, even after clicking Reload, etc.
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Dec 8, 2010
I backed up about 19GB of my Web Server today compressed into a .tar.gz. I then split these files into 4300MB chunks (approx 4.2GB). I then used k3b to write 2 parts of the archive these to a Dual Layer DVD. The burn went fine but I cannot seem to mount said DVD. I tried the following;
Code:
matt@matt-u:/media$ sudo mount -t udf /dev/sr0 /media/cd
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
missing codepage or helper program, or other error
[Code]....
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May 2, 2011
I just upgraded my ubuntu from 10.10 to 11.04 update update manager, it seems everything works fine but there are times when I open such files and no veel pdf document content, also open something in gedit and not let Verel content, I have to restart the pc and there if I can see the contents, my pc is a compaq v3000 laptop with 2 gb of ram
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Jun 30, 2011
I have a question - what's the best way to edit the contents of an .iso image ?Yes, I know how to mount it and navigate through files and folders. But it's read-only. Mounting with "rw" option also doesn't help.I've heard about 1) mounting, 2) coping everything to a separate directory 3) editing some files, 4) making a new .iso image
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Jun 30, 2011
I want to copy the contents of a directory through ssh. The problem I'm having is that I can use the cp -r terminal function, but that would cause the directory itself to also be copied. I just simply want whats inside to be copied to another directory. Because of the way I have my server laid out, I would have to copy the entire directory, then copy each element one by one inside that directory into the specified folder. This is really tedious. So, is there a way I can just copy its contents? I was thinking of zipping it, the unzipping it, but when you extract, it once again just creates a new directory, not the contents inside.
If this is confusing, this is what I'm trying to do:
Directory: ../random/
Currently after scp -r:
[code]...
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Jul 29, 2010
In Ubuntu 10.04, there is a certain file that appears highlighted in terminal. When I try to cat the file, it says there is no such file or directory. How can I see what's in this file? Is this a symbolic link?
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Jan 10, 2010
I want to export of the current default keyring (wireless network passwords etc.) and import it to another ubuntu 9.10 release on another computer but I can't seem to find much on the subject. Does anyone know how to do this?
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Feb 24, 2010
how do I print out the contents of a file?
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Mar 23, 2010
/root/.local/share/Trash/files/I have a tar backup file in there and can't get rid of it. I've tried from root with Nautilus, the files disappear for a couple of seconds and then reappear.
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Apr 30, 2010
EDIT:SOlved, I'm trying to figure out how to delete this
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