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• ssh can't connect after server ip changed

  - by Kery

  I have a server with ubuntu installed. After I change the network configuration and restart server, ssh client can't connect server any more. But in the server I can use ssh client to connect itself and the netstat command shows that sshd is listening port 22. And in my computer (win7) ping command is OK to server's new IP. The configuration in /etc/network/interfaces is: auto eth0 iface eth0 inet static address 10.80.x.x netmask 255.255.255.0 gateway 10.80.x.1 I'm very confused about this. Hope somebody can give me some idea. Thank you in advance!!!

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• Firefox 11 Bookmarks Toolbar too Tall

  - by tba

  After updating to Firefox 11, my Bookmarks Toolbar is unpleasantly tall. This link implies that it's due to the presence of separators in my toolbar. I tried adding the suggested CSS in post 5 to my userChrome.css file, but this did nothing. I have also tried #PersonalToolbar {max-height:10px !important;} But this simply truncates the bottom of the toolbar. Does anyone know how to change the size of the bookmarks toolbar to match Firefox 10? More info: Here is a screenshot of my Bookmarks Toolbar. I'm using OSX 10.6.8 with the default theme. I have "View Toolbars Customize Use small icons" enabled. I'm also using the LiveClick 0.4.2.0 extension, but disabling it does not fix the issue.

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• gitosis public key

  - by mbursill

  On my client I am attempting to run: git clone gitosis@DevServer:gitosis-admin.git I get a warning: The authenticity of host '10.1.1.13 (10.1.1.13)' can't be established. RSA key fingerprint is a2:c3:fd:d7:f7:75:df:dd:49:64:ce:64:cc:98:e6:2c. Are you sure you want to continue connecting (yes/no)? It appears to be picking up the public key from: /etc/ssh/ssh_host_rsa_key.pub I want it to use the key located in: /srv/gitosis/.ssh/authorized_keys How do I get my server to hand out the correct public key?

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• impossible to install Framework 3.5

  - by yae

  Hi few days ago I formatted one of my computers (XP Home SP2 with prior updates installed). Now I am trying to install NET Framework 3.5, but display this error: [03/21/10,17:19:36] Microsoft .NET Framework 2.0a: [2] Error: Installation failed for component Microsoft .NET Framework 2.0a. MSI returned error code 1603 [03/21/10,17:20:17] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0a is not installed. Already i have tried this to try solve this issue, but the problem persists. 1.- unistall all frameworks and reinstall from scratch 2.- clean all temps file and reinstall from scratch 3.- unistall and clean all frameworks with dotnetfx cleanup tool and reinstall from scratch 4.- install .NET Framework 3.5 full package But all these possibles solutions have failed. Any idea to solve this? Thanks in advance

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• Do TCP/UDP connections add to the Windows incoming connection limit?

  - by user47899

  Hi all, I've tried to figure out what Microsoft means by "Windows sockets" and it all seems very vague. Basically we have customers that sometimes try to set up workgroups with close to 10 Windows XP computers with drive and printer shares and we're worried that some of the non-Windows Ethernet devices on the network will cause issues with the inbound connection limit outlined here where only 10 inbound connections can be active at one time. For example, there is an Ethernet Caller ID device that broadcasts UDP packets to all computers, and a kitchen display system that likewise broadcasts UDP. They may also have incoming TCP packets for our custom online ordering module. Do these TCP/UDP connections count toward the inbound connection limit? I'm aware that Windows 7 has increased the limit to 20 but we might have future customers that will push that limit. Thanks in advance

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• Why is an Ext4 disk check so much faster than NTFS?

  - by Brendan Long

  I had a situation today where I restarted my computer and it said I needed to check the disk for consistancy. About 10 minutes later (at "1%" complete), I gave up and decided to let it run when I go home. For comparison, my home computer uses Ext4 for all of the partitions, and the disk checks (which run around once week) only take a couple seconds. I remember reading that having fast disk checks was a priority, but I don't know how they could do that. So, how does Ext4 do disk checks so fast? Is there some huge breakthrough in doing this after NTFS came out (~10 years ago)? Note: The NTFS disk is ~300 GB and the Ext4 disk is ~500 GB. Both are about half full.

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• Shaping with shorewall complex shaper not work (or I don't understand principle of operation)

  - by strangeman

  I have router (Debian 6) with 2 network interfaces (and 1 virtual tun interface): eth0 - localnet, 192.168.1.0/24, router ip is 192.168.1.1 eth1 - internet tun0 - openvpn to central office. openvpn network - 10.1.0.0/24, central office network - 192.168.0.0/24 I need shape all traffic, which moves 192.168.1.0/24-192.168.0.1:6666 and 192.168.1.0/24<-192.168.0.1:6666, and restrict its speed to 200kbit. Now, I have this configuration, but its not work: tcdevices (set up interface parameters) #INTERFACE IN-BANDWITH OUT-BANDWIDTH eth0 100mbit 100mbit #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE tcrules (mark all traffic, which move on 6666 port) #MARK SOURCE DEST PROTO PORT(S) 1 0.0.0.0/0 0.0.0.0/0 tcp 6666 #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE tcclasses (shape all marked traffic) #INTERFACE MARK RATE CEIL PRIORITY OPTIONS eth0 1 200kbit 200kbit 2 eth0 255 9*full/10 full 1 default #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE Where is my mistake?

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• Persian font in Netbeans cause speed reduction

  - by linker

  I have speed problem in Netbeans 7.0 IDE when my current open document has any Persian font inside it. If it happens, the speed of software incredibly reduce.( for example if I hit backspace, it takes about 10 seconds to respond). The amazing part is when I open a fully english document in Netbeans there is no problem and everything works well. I'm running netbeans 7.0 on Mac OS X 10.7.2. This problem happens with every fonts( even with fully Persian fonts). But I really want to have Persian with default Monospaced font. Thanks in advance.

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• In DNS can an IN NS point to a CNAME?

  - by embobo

  Is it allowed to have an NS record be a CNAME? E.g.: subdomain.example.com. IN NS ns1.example.com. ns1.example.com. CNAME foo.example.com. foo.example.com. IN A 10.1.1.1 This doesn't seem to work in bind though this (of course) does: subdomain.example.com. IN NS foo.example.com. foo.example.com. IN A 10.1.1.1 Any pointers to RFCs prohibiting this setup would be appreciated.

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• Ubuntu in Virtualbox - web server very slow when using local IP address

  - by Lenny Marnham

  I'm using Ubuntu (Lucid Lynx) to learn Ruby On Rails. I'm running Ubuntu in VirtualBox (the host is Windows 7 Ultimate), using bridged networking. When I run my Rails app and point the browser at it using localhost:3000, the app responds immediately and my page is rendered in a second or two. However, if I use 10.0.0.5:3000 (where 10.0.0.5 is my IP address reported using ifconfig), the response from my rails app is incredibly slow - maybe 30 seconds or more for the server to respond and render the page. This happens in both Firefox and Chrome. Also, when I hit the Rails app from the host (to test it in IE), I get the same slooooooow response. Any ideas what might be going on? I've tried it with two different routers, and on two different networks (work and home) with the same result. Cheers all.

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• Bringing the xenbr0 interface up on XEN under Ubuntu 8.04

  - by iyl

  I installed XEN on Ubuntu 8.04 using this tutorial: http://www.howtoforge.com/ubuntu-8.04-server-install-xen-from-ubuntu-repositories but after I reboot with the XEN kernel, I don't have xenbr0 device. I see that network-bridge script runs and it creates peth0 device, but not xenbr0. I have a very basic IP setup, with a single static IP defined in /etc/network/interfaces. The only unusual thing is that my hosting (1&1) gave me a netmask 255.255.255.255, so I had to add the default gateway with this script: /sbin/route add -host 10.255.255.1 dev eth0 /sbin/route add default gw 10.255.255.1 Everything else is plain vanilla Ubuntu 8.04.

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• Bonding and default gateway problem (CentOS)

  - by lg

  I configured network bonding on two machine with centos 5.5. Bonding works well, but the problem is default gateway: it is not configured! I follow this tutorial. I added GATEWAY in both (and either) /etc/sysconfig/network and /etc/sysconfig/network-scripts/ifcfg-bond0. But, when I restart network (or server) there is no default gateway (route command). This is ip route ls output after network restart: 10.0.0.0/16 dev bond0 proto kernel scope link src 10.0.0.88 Where is my mistake?

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• The application Finder can't be opened. -10810

  - by PARTH

  Hi Guys, I am getting an error as shown in the screenshot. This started happening after I updated my Mac OS X from 10.6.5 to 10.6.6. Problem is that Finder stops working 5 mins after the restart and all the other aplications including Xcode 3.2.5, iPhone simulator, safari,etc stops working. Everytime I have to restart the Mac as all the things hang. What could be wrong? What could be a permanent fix for this? Please Help and Suggest Thanks

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• How can I delete everything after the first column in Notepad++?

  - by Bob J

  I'm trying to get rid of everything after a column in Notepad++. Column mode is not an option. Is it possible? What I have 70.97.110.40 159 ms [n/a] 21 70.97.117.177 134 ms [n/a] 21 70.97.120.10 75 ms [n/a] 21 70.97.122.105 87 ms www.portless.net 21 70.97.122.106 89 ms www.popovetsky.org 21 70.97.122.107 95 ms www.psmythe.net 21 70.97.122.104 98 ms wasabi.prostructure.com 21 70.97.122.108 89 ms crm.prostructure.com 21 70.97.122.109 87 ms internal.prostructure.com21 What I want 70.97.110.40 70.97.117.177 70.97.120.10 70.97.122.105 70.97.122.106 70.97.122.107 70.97.122.104 70.97.122.108 70.97.122.109 Thanks

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• Unable to mount cifs in redhat 6

  - by user3734522

  I am relatively new to Linux, and I am trying to mount a CIFS filesystem from an openfiler instance I have on my network in Red Hat. The openfiler instance is authenticating using AD. I am able to connect using samba: smbclient '\\10.25.214.26\cluster_storage.cluster.Cluster' -U [DOMAIN]+[USERNAME] Enter DOMAIN+USERNAME's password: Domain=[DOMAIN] OS=[Unix] Server=[Samba 3.5.6] smb: \> When I attempt to mount on boot via fstab, I am told that the line is bad during startup. mount -t cifs -o username=[DOMAIN]+[USERNAME], password=[my password], domain=[domain.edu] '\\10.25.214.26\cluster_storage.cluster.Cluster' /mnt/scratch Any help would be greatly appreciated.

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• Hooking up many different external HDs simultaneously

  - by cbizz

  I need a large amount of external storage for an upcoming project. I'm planning on purchasing 10 2TB external drives. I need them all hooked up to a single machine at the same time. What issues will I run into? I plan on using 2 power strips and having them all externally powered from the wall. I will use a USB hub to plug in all the drives. I need drive access time to be as fast as possible. I am using Ubuntu Linux(64 bit). Will I be able to mount 10 drives?

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• is there a linux equivalent of iTerm(mac) sending command to multiple tabs functionality?

  - by jabbertalker

  in iTerm, you can send a command to execute simultaneously on a set of already opened tabs. Is there a way to do this in linux (with gnome-terminal preferably)? for instance, supposed that I had 10 tabs already ssh'd into [email protected] and sudoed to root and wanted to send a command to run on all 10 tabs. The goal of this is to be able to stay within a set of tabs and command them, rather than having to use expect scripts to ssh and elevate and run commands. Basically, like how you could do in iTerm.

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• Poor disk performance with high disk capacity usage

  - by GoldenNewby

  I've heard numerous times in the web hosting industry that using "too much" disk space on a drive is bad for performance. Is this just a myth? Can someone explain why this is an issue, even in a situation where the amount of IO done to the drive would be the same at 10% as it would be at 90%? I'm especially curious in the case of virtual servers. If I set up 10 Logical volumes as the virtual disks for some VMs, is it going to run better if I "waste" 20% of the disk space?

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• Connecting client to JBoss cluster

  - by Nivek

  I am new to JBoss. Basically I have managed to cluster 2 nodes with: Node 1: run.bat -c all -g DefaultPartition –u 230.0.0.4 -b 10.67.51.28 -Djboss.messaging.ServerPeerID=1 Node 2: run.bat -c all -g DefaultPartition –u 230.0.0.4 -b 10.67.50.21 -Djboss.messaging.ServerPeerID=2 I know that if i cofigure a Apache load balancing(Mod_JK) to sit infront of the cluster, the client simply just punch in the IP of the Apache, and Apache will redirect the traffic to the nodes. But I do not want to have a Apache infront of the cluster. So how do my client access the cluster?? Do i need to configure something in JBoss, or isit a MUST to have a load balancer for the client to access the cluster?? MANY thanks in advance....

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• Why Photoshop CS5's photomerge's result immediately disappear?

  - by koiyu

  I have a bunch of JPG-files which I want to stitch together with Photoshop's Photomerge function. I choose File → Automate → Photomerge... and browse for the files. Photoshop opens the files and starts analyzing. I see the process bar filling and different phases are mentioned on the process bar. Nothing weird there. When the merging is done (and if I don't blink my eyes), I can see layers-palette is populated with the chosen files and, by quickly judging from the layer thumbnails, they're properly aligned. Sometimes the image window itself can be seen, but not always. Problem is that the layers and the image disappear in a flash. There is no error message. Everything is like prior starting the photomerge. No file has been changed. I could continue to use Photoshop normally. This is what I've tried so far: Loaded folder which has 38 JPG images, 4272 x 2848 and ˜ 5 megabytes per file Loaded the same files, but chose Use Files instead of Use Folder in the photomerge's window Loaded 19 JPG images, 4272 x 2848 and ˜ 5 megabytes per file Loaded 10 JPG images, ⇑ see above Loaded 5 JPG images, see above Loaded 3 JPG images, see above Scaled the images to 2256 x 1504 and ˜< 1 megabytes per file Loaded in a set of 38, 19, 10, 5, 3 Following steps are tested with these smaller files and with a set of 5 images Read Adobe's forums and reduced the amount of RAM Photoshop uses gradually from ˜ 80 % to 50 % (though I didn't understand the logic behind this) Would've reduced cache tile size to 128K, but it was set so already Disabled OpenGL Scaled the images to 800 x 533 and ˜ 100 kilobytes per file, loaded a set of 5 Read more unanswered threads around the internet In between each test I closed and reopened Photoshop. This is the first time I've even tried using photomerge. Am I doing something wrong? How can I locate what is the problem? How do I fix this? Photoshop is 64 bit Extended CS5 version. I'm on a mid-2010 quad-core (i5) iMac with up-to-date Mac OS X 10.6.6. Edit: Weird. First loading the images into one file via File → Scripts → Load Files into Stack… and then using Edit → Auto-Align Layers…, which, effectively, is the same as photomerge (even the dialog looks kind of the same), works! Even with the original JPGs without any issues. This doesn't fix photomerge, though.

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• How can I open a port in OS X 10.6?

  - by Ian

  Mine is MacBook Air, so I cannot plug to the modem directly. And I do want to turn my firewall off. How can I specify to open a port, like port 56789 in Mac OS 10.6.8? I know in old Mac OS, there is a option for me to specify a custom port. But I cannot find it in OS X 10.6.8. In System Preferences / Security / Firewall, I only can allow an APPLICATION to access a new port. However, now I'm programming, using a new port. So, it seems not suitable for me. So, can I simply open a port instead of using an Application to open a port?

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• Our company has 100,000s+ photos, how to store and browse/find these efficiently?

  - by tobefound

  We currently store our photos in a structure like this: folder\1\10000 - 19999.JPG|ORF|TIF (10 000 files) folder\2\20000 - 29999.JPG|ORF|TIF (10 000 files) etc... They are stored on 4 different 2TB D-link NASes attached and shared on our office network (\\nas1, \\nas2, and so on...) Problems: 1) When a client (Windows only, Vista and 7) wishes to browse the let's say \\nas1\folder\1\ folder, performance is quite poor. A problem. List takes a long time to generate in explorer window. Even with icons turned off. 2) Initial access to the NAS itself is sometimes slow. Problem. SAN disks too expensive for us. Even with iSCSI interface/switch technology. I've read a lot of tech pages saying that storing 100 000+ files in one single folder shouldn't be a problem. But we don't dare go there now that we experience problems on a 10K level. All input greatly appreciated, /T

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• VNC server shows black screen with a X cursor

  - by user2656114

  Starting VNC server using vncserver :1, client can connect to the server but it shows only a black screen with a X cursor. Contents of .vnc/xstartup is: #!/bin/sh # Uncomment the following two lines for normal desktop: unset SESSION_MANAGER exec /etc/X11/xinit/xinitrc [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources xsetroot -solid grey vncconfig -iconic & xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" & twm & Is it a problem with this?

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• In Excel how can I sum all the numbers above the current cell?

  - by Mark Meuer

  I want to have a column in Excel that consists of a header, a bunch of numbers, and then have the sum of those numbers at the bottom. I'd like the sum to adapt to the insertion of new numbers above the total. Something like this: Numbers 1 2 5 10 18 Total If I later insert 10 new numbers in the middle of the list, I want the sum to automatically include them. I know the SUM() function can sum a whole column, but if the total is also in that column then it complains about a circular reference. How can I just sum the numbers above the total?

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• Viewsonic monitor keeps showing its on-screen menu incessantly

  - by markvgti

  Since yesterday my Viewsonic 22" monitor (VX2255wmb) keeps showing its on-screen menu incessantly, without my touching any of its buttons. The menu comes on in the centre of the screen, stays on for 8-10 seconds, disappears for a second or two, then repeats the cycle. This happens whenever there's a signal being sent to the monitor. I can't actually navigate the menu when it appears on-screen. Pressing the power button, or the Up and Down buttons on its right edge dismiss the menu, only for it to reappear again. These symptoms have appeared before, but earlier they'd stop after 5-10 mins. The power button on the monitor has always been iffy, but now it doesn't seem to be working at all--have to switch off power supply from mains when I leave my desk. Using DVI input on this monitor as my HP desktop has DVI output.

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