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• Can't burn 8.1G iso onto 8.4GB DVD - "Media does not have enough free space"

  - by Max Williams

  I'm trying to burn a dvd on a mac with an external (firewire-connected) dvd drive. I'm checking the size of the iso thus: DVD-4:dvd_files macbook$ ls -l /tmp/hybrid.iso -rw-r--r-- 1 macbook wheel 8700884992 Aug 22 10:57 /tmp/hybrid.iso DVD-4:dvd_files macbook$ ls -lh /tmp/hybrid.iso -rw-r--r-- 1 macbook wheel 8.1G Aug 22 10:57 /tmp/hybrid.iso The "human-readable" size is 8.1 Gig but when i try to burn, onto an 8.4G dual-layer dvd, it says "Media does not have enough free space" The definition of a "Gigabyte" according to Wikipedia is 1 billion bytes, so the iso size should actually be 8.7 Gig according to this definition, in which case the disk definitely isn't big enough, and it's just that the -h option to ls is misleading. Is the discrepancy just due to the ls command using a different definition of "G" (eg 1024 Meg aka 1.07 Gig? This comes out as 8.103 which fits what ls is displaying)

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• How do I ask screen to behave like a standard bash shell?

  - by thornomad

  Just learned about the screen command on linux - it is genius. I love it. However, the actual terminal/prompt in screen looks and behaves differently than my standard bash prompt. That is, the colors aren't the same, tab completion doesn't seem to work, etc. Is there a way I can tell screen to behave just like a normal (at least, normal as in what I am used to) bash prompt ? Additional Information I am connecting via ssh from a Mac (Terminal) to a headless linux box (Ubuntu). After logging in, I have TERM=xterm-color and when I run screen I have TERM=screen. Am going to try the suggestions below to see if I can change the $TERM value first.

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• Monitor windows startup process

  - by vlad-ardelean

  My win7 starts up pretty slow lately. I think it's some kind of malware, but my antivirus software doesn't pick up anything. How could i monitor the startup processes myself? It seems to me like either something's doing a lot of work, or some important windows process hangs for a while, since there's stuff that i can do while it's starting (like start a console), and stuff that i can't do (like execute the systeminfo command in the console) So if you happen to know how i can monitor my system, that would be great. Thx, you guys rule.

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• Does Internet Explorer have something equivalent to Chrome's app mode?

  - by Steve

  Can I open a browser window in Internet Explorer for a specific website without having any tabs, toolbars, bookmarks, etc.? Just the window border and the site, that's it. I want something like Chrome's "App Mode", but for Internet Explorer. Is there a command-line switch for Internet Explorer or something similar that will open a specific site without any browser stuff in the window? Otherwise, is there any small program I can use that would accomplish the same thing? (Like something that just does nothing but open a window with an Internet Explorer renderer in it.) Information on any version of Internet Explorer is useful.

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• SFTP over double server hop

  - by josh.trow

  I'm trying to work out a method to allow me to access files on an SFTP server than I cannot access from my local machine. Currently, I have to SSH to a remote server (it is in a certain IP block that the final SFTP server will accept from), then from there SFTP to the destination server. From there, I get the files I am interested in, thereby dropping them onto the middleman server, from which I can get the files either over a Samba share or with a direct scp. I also work in the reverse, where I drop the files onto the middleman, SSH to it then SFTP to the destination and put them into the appropriate folders. My goal is to shorten this. The unfortunate restrictions are that my machine is Windows (I use KiTTy and/or Cygwin) and I cannot modify the middleman server (or destination server) in any way. I am willing to use command line or GUI programs so long as it works and is free. Any ideas?

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• How to get aero themed windows and a task bar on Ubuntu 11.10?

  - by The OS Man

  I know some themes that make all of ubuntu look like windows 7, but I just want the windows to be aero themed. How can I do this? Also, I want the Windows 7 taskbar (including the start orb) in ubuntu. Please don't suggest getting windows 7, because I can't. I'm new to ubuntu (Windows xp user), so I don't want to go into the command line. Finally, I had been thinking about using a program called ViStart. Will it work? Please answer!

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• Configuring memcached for a particular scenario

  - by pradeepchhetri

  I have a web application which queries opentsdb server(which in backend using Hbase cluster) for the datapoints of different metrics and using dygraph javascript graphing library, I am plotting those metrics. Since getting all the datapoints of past one day from opentsdb for a particular metric is itself taking nearly 2 seconds, my application which is plotting nearly 25 metrics is becoming very slow. In order to reduce this latency, I am thinking of using memcached module of php5 for caching all the queries. But I have few questions regarding memcached. Is there any way I can configure memcache to keep on updating its cache in the background by running some command line queries after particular interval of time. Is there any way I can configure memcache to always reply for a query using cache instead of first updating its cache because my application just plots datapoints for past one day. Missing out some datapoints is not that critical.

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• Recover deleted files on windows 2008 file server

  - by aniga

  We have recently been hit by a weird virus which made all files and folders a system files/folders and also it hid all files and folders par some weird ones it created including: ..exe porn.exe secret.exe password.exe etc We have managed to restore the files with attrib command to unhide and unmark them as system files however we have noticed that we are missing some 4 to 5 folders of which (based on my luck) 2 of them are the two most important client we have. I am not sure if these files were deleted by the worm/virus or by my colleagues who are not owning up to them but the files are now gone. Worst of all, we do not have any backup what so ever (Yes I know, we should not have done that but it is a lesson learned and since last night we have created two forms of backup systems one to external device and one on the cloud, but I doubt any of that will help us now) We have 1 Windows 2008 File server and 4 client computers based on Windows 2007. I would be grateful if anyone can help us on how we can recover from this disaster which could potentially put us out of business.

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• How can I restore GRUB without a live CD?

  - by Looterguf

  I realize that this is a duplicate of a question asked before, but in that question the asker managed to find his live CD and no real answer appeared, thus I am re-asking it. I managed to screw up my GRUB by deleting two linux partitions on my hard drive from windows. After this, GRUB gives the error "partition not found", and gives me the grub-rescue prompt. The only command I have found to work in this is 'ls', which spits out my partitions. I would use the live CD fix, but I am in India, and all my live CDs are back home in the US... What I've got is an internet connection, a 4GB flash drive with Flow OS installed (which I am currently using but can wipe if need be), and a working laptop that I can borrow. What should I do?

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• Windows Software to Save Arbitrary Application State

  - by ashes999

  VM software does a great job of saving state when you "turn it off," allowing instant and immediate return to that previous state. Is there some application for Windows that allows me to do the same thing, for any arbitrary software? It would allow me to save/restore state, possibly via a shell command or button that it appends to every window. Edit: For clarity, there are two types of apps: those that save their own states, and those that save others' states. Those that save their own state are like Chrome, which on load, reloads the windows you had open last time. That's not what I'm asking about; I'm asking for an app that can save the state of other apps, kind of like VM software does; but for any app. (A trivial test would be load notepad++, type a bunch of stuff, and save-state; on reset-state, you should be able to multi-level undo a lot of what you wrote, as if you never shut down the application.)

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• Why is my email server in AT&T's blacklist?

  - by legoscia

  I just got this bounce message: <¦¦¦¦¦¦¦¦@att.net>: host scc-mailrelay.att.net[204.127.208.75] said: 521-88.208.246.34 blocked by sbc:blacklist.mailrelay.att.net. 521 DNSRBL: Blocked for abuse. See http://att.net/blocks (in reply to MAIL FROM command) So I'm trying to figure out why our server ended up on their blacklist. The web page link doesn't tell me why, as far as I can see. From a few multi-RBL tools I conclude that our IP is only on the collateral damage lists of uceprotect.net (you can be exempt from that with a paid subscription), and I dearly hope that AT&T doesn't use that. From the mail server logs I see that an email to another @att.net address went through two days ago without being blocked. Does anyone have any ideas how I can find out what went wrong?

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• centos 5.6, virtual on Vsphere

  - by Glasnhost

  suddenly my virtual centos server (5.6 on VMWare-VSphere) is not working... It started with the url not responding, nor the ip. (NO HTTP response, no ping). When I entered on the server via ssh to start troubleshooting I noticed that most of commands don't work anymore: top- machine hangs (it's not slow anyway) ps - machine hangs (funny enough apache server and web app are running and sending me emails) on some directory ls -l - machine hangs after first file, if ls l.txt the file show only the first file "more" command, also hangs on some file. So there are very little things I can try. I recovered my virtual machine from yesterday and before yesterday, and they show the same behaviour, it hangs on commands (but yesterday they were working). There is no firewall on the machine, there is on the host though. I can connect with ftp but I can't download files nor list directory apart the user top directory... Working hard right now, any idea appreciated

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• Exchange retention work cycle properties

  - by marcwenger

  I've setup retention tags and policies in Exchange, but only run when I execute start-managedfolderassistant Upon running the command get-mailboxserver | fl name,*workcycle*, *ManagedFolderAssistantSchedule*, I noticed the following fields (truncated): ManagedFolderWorkCycle : 1.00:00:00 ManagedFolderWorkCycleCheckpoint : 1.00:00:00 ManagedFolderAssistantSchedule : {Sun.1:00 AM-Sun.9:00 AM, Mon.1:00 AM-Mon.9:00 AM, Tue.1:00 AM-Tue.9:00 AM, Wed.1:00 AM-Wed.9:00 AM, Thu.1:00 AM-Thu.9:00 AM, Fri.1:00 AM-Fri.9:00 AM, Sat.1:00 AM-Sat.9:00 AM} The first two are set to run every day, but does this conflict with what is set in ManagedFolderAssistantSchedule? What's the difference between ManagedFolderWorkCycle and ManagedFolderWorkCycleCheckpoint?

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• Execute script before shutting down in Ubuntu

  - by juanefren

  When I shut down my computer I want to show some pending tasks that I have to do before leaving the office... I did a local application to manage those tasks, so basically I just want to run a command, and shut down after I kill the app executed. I have already tried with these options: * /etc/gdm/PostSession/Default -- this works only when I select LogOut option instead Shutdown. * /etc/rc0.d/K01mycustomscript -- execute script after X is killed * $HOME/.bash_logout -- This looks like does nothing. * ./app-to-run && sudo shutdown -h now -- Don't like it for 2 reasons, prompts for sudo password, and can't use my laptop shutdown button. I am using Ubuntu 10.04

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• Excel conditional selection?

  - by Andrew

  I think this is a simple question. I have a big table of data points and I want to take a an average of a subset of a single column. For example, if A is "age" and B is "gender," what command could I use to calculate the average age of women in my table? I know I can do this by sorting the table by column B and then only selecting column A values, but I want to build up to much more complicated conditional terms (e.g. if A is 5 and B is 3 and C is 4, then give me the average of D). Thanks!

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• how to properly edit hosts, hostname and resolf.conf? [migrated]

  - by Firewall

  i,v been searching the internet for a real noop tutorial on the subject but could not found any direct info. on how to edit these files the proper way. i,v got a debian internet server that i use to host some personal domains and runs squid and rTorrent. the server is up and running with no problems but i am confused about a few things. lets say that i named my server (foo), my domain is (example.com) and my public IP is 95.211.133.200 now: should /etc/hostname contains: tango.example.com or tango <----- just the server name should /etc/hosts contains: 127.0.0.1 localhost.localdomain localhost 95.211.133.200 foo.example.com foo should /etc/resolf.conf contains (along with the nameservers) both: domain example.com search example.com or just the first one. are there any other files that i should edit in order to make things right? last thing, the command: domainname returns: (none) i believe it should return (example.com). what should i do to correct that?

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• How to install software packages on a Mac? (MacPorts, Fink, anything better?)

  - by Ben Alpert

  On my Mac OS X machine, how would you recommend I install command line software and other packages? I've been using MacPorts and it always seems quite slow, presumably because it has to compile the packages on-the-fly. I'd much prefer a package management system that has binary packages, saving me the need to compile things every time I want to download something new. I think Fink has binaries for some of the packages, but I usually see MacPorts recommended as the system to use. Which do you think works better and why? (Or is there another system that I haven't heard of?)

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• Scp only a specific folder

  - by Ben

  Some command line syntax I don't know how to set, am a noob sometimes, sorry is that's obvious Let's says I have the following path for all my assets : /var/www/site/system/images/{image_id}/{format}/{file}.{extension} Inside the {image_id} folder, I have multiple formats (original, medium, thumb, etc...). I only want to import the /var/www/site/system/images/{image_id}/original folder, and keep the structure locally scp -r username@server:/var/www/site/system/images/*/original ~/Site/site/system/images This one does get it all, but all the files end up in the same and unique folder, no structure. I'd like to keep the structure. Is there something to do for it ?

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• Windows Task Scheduler won't let me uncheck "Wake the computer" option for a backup task

  - by KdawgUD

  I have a problem with my windows 7 laptop automatically waking after I put it to sleep and then I find it later with the battery drained. I tracked down the culprit using the "powercfg -lastwake" command to be a Backup task in the "Windows Server" section of the task scheduler. I have tried unchecking the "Wake the computer to run this task" checkbox for this task, but after I do this and reboot, the box is always rechecked again. How can I make this setting persist? I have full admin rights to this laptop, but it is on a domain. Edit: I looked into the domain policy settings as suggested by Dave below and did not find any policies related to scheduled task settings. Any other ideas?

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• Enlarge partition on SD card

  - by chenwj

  I have followed Cloning an SD card onto a larger SD card to clone a 2G SD card to a 32G SD card, and the file system is ext4. However, on the 32G SD card I only can see 2G space available. Is there a way to maximize it out? Here is the output of fdisk: Command (m for help): p Disk /dev/sdb: 32.0 GB, 32026656768 bytes 64 heads, 32 sectors/track, 30543 cylinders, total 62552064 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000e015a Device Boot Start End Blocks Id System /dev/sdb1 * 32 147455 73712 c W95 FAT32 (LBA) /dev/sdb2 147456 3994623 1923584 83 Linux I want to make /dev/sdb2 use up the remaining space. I try resize2fs /dev/sdb after dd, but get message below: $ sudo resize2fs /dev/sdb resize2fs 1.42 (29-Nov-2011) resize2fs: Bad magic number in super-block while trying to open /dev/sdb Couldn't find valid filesystem superblock. Any idea on what I am doing wrong? Thanks.

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• Configuring an Engenius 3500

  - by dsiddens

  The title speaks to only half of the issue: the other half are the settings in Ubuntu and the sequences therein. The computer in this issue does receive internet with the external antenna jack at the back being fed with a simple magnetic base antenna designed for putting on the roof of an automobile. However, that signal is weak and the Engenius with an external antenna (Rootenna ~15db gain) and ehternet wire will supply a stronger, faster signal. I've set the Engenius to the desired source and entered the correct WEP password. The lights on the Engenius indicate that it's connected to the access point. At the Ubuntu side of this I've worked to no avail changing settings with "Edit Connections" to the point I'm Ask(ing)Ubuntu for help. I have and have RTFM for Engenius 3500 There is an embarrassing side note to this issue: At one time I had the Engenius working! It seems that I can't recall the settings and sequences I used way back when. And I may as well confess to not knowing the Command Line. I'm a GUI guy. Thank you for your time, Doug

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• Exceptions from automongobackup, yet script completes

  - by chakram88

  I am using automongobackup to, well, automate the backups of mongodb. output from the script (to STDERR) has the following exceptions (but the backup completes, and the dump files are created) ###### WARNING ###### STDERR written to during mongodump execution. The backup probably succeeded, as mongodump sometimes writes to STDERR, but you may wish to scan the error log below: exception: connect failed exception: connect failed exception: connect failed exception: connect failed exception: HostAndPort: bad port # exception: connect failed exception: connect failed exception: connect failed exception: connect failed exception: connect failed exception: connect failed I know that the Host & Port are correct. If I run mongodump --host=127.0.0.1:27017 --journal (which is the effective command from automongobackup based on the options set and my reading of the src code) everything runs clean without any error reporting and the dump files are created as expected. Why would automongobackup report connection errors, even tho it does create the dump files, yet a straight call to mongodump does not? Debian 6.0 Lenny (from Linode image: Latest 3.2 (3.2.1-x86_64-linode23)) AutoMongoBackup VER 0.9 mongodb v 2.0.2

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• Software Center does not load

  - by eim

  I'm having problems with opening my Software center and it just shuts off after loading a few seconds. I can't even get it to the main page of the Software Center. I did try to follow these commands but of no avail: sudo apt-get purge software-center sudo apt-get update sudo apt-get install software-center Instead, I get an error after entering the first command: eim@eim-VAIO:~$ sudo apt-get purge software-cente Reading package lists... Error! E: Encountered a section with no Package: header E: **Problem with MergeList** /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_universe_i18n_Translation-en E: The package lists or status file could not be parsed or opened. I tried doing this aswell: Run : cd ~/.cache; rm -r software-center (nothing happened) And this: Add /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 to the Startup applications error message: eim@eim-VAIO:~$ /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 Gtk-Message: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it. ** (polkit-gnome-authentication-agent-1:3563): WARNING **: Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: An authentication agent already exists for the given subject Cannot register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: An authentication agent already exists for the given subject I think I've done all the possible fix to this problem as suggested on my research. But I can't seem to get this work. Can someone please help? NOTE: Okay... Guess I just found the solution to my problem. I'll just post the answer here since I can't answer my own question yet. Open terminal: sudo rm /var/lib/apt/lists/* -vf sudo apt-get update Now I can open my Software Center! I found the answer here: How do I fix a "Problem with MergeList" error when trying to do an update?

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• A Service specific error occured:1 on trying to start apache 2.0 server.(Windows 7)

  - by user2297366

  I installed apache on my computer(localhost) and it worked fine. Then I went to download some other stuff and later noticed that the apache server stopped. So I went to command prompt(as administrator) and typed net start apache2. It says The Apache2 Service is starting. But before it finishes, I get the error A Service Specific Error Occurred: 1. It says that you can type in something for more info, but that doesn't help at all. Things I have tried: 1: Quit Google Drive Sync 2: Quit any and all programs using port 80(port my server is on) 3. I even tried changing the port of the server and got same error message, so I don't think it has anything to do with something else being in the port. None of those things have worked. I am confused at why it worked earlier, but now it won't work. Any help is greatly appreciated.

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• Can't get iptables firewall working correctly

  - by Jay

  I'm setting up a new Centos 5.6 system and can't get my iptables firewall to work correctly. it won't let me use SSH through it. I'm new to Centos but not to Linux or iptables. I've been removing things until I have isolated the problem. I set up the firewall with a default ACCEPT rule for the INPUT chain. I can connect through to the server fine. If I change the command to only allow traffic from the interface connecting to my trusted network it stops working. Working: iptables -A INPUT -s 0/0 -d 0/0 -j ACCEPT Failing: iptables -A INPUT -i eth0 -s 0/0 -d 0/0 -j ACCEPT I've double checked the ip address I'm using corresponds to eth0 using ifconfig. Any ideas where I went wrong?

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