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• Sftp via shell - how is it possible?

  - by Tomasz Zielinski

  (Moved from StackOverflow: http://stackoverflow.com/questions/4589725/sftp-via-shell-how-it-is-possible) How is it possible for tools like http://mysecureshell.sourceforge.net/ to provide SFTP access by merely specifying them as shell by typing: usermod -s /bin/MySecureShell myuser ? I'm on Debian Lenny, with default sshd/OpenSSH. Is this e.g. a feature of SSH protocol that allows user shell to handle sftp commands? I can't wrap my head around this because usually OpenSSH needs sftp-server module (or the internal one in newer versions) - and this makes me think that sftp commands don't even hit the shell and are handled earlier or by different code path..

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• SMTP hacked by spammer using base64 encoding to authenticate

  - by Throlkim

  Over the past day we've detected someone from China using our server to send spam email. It's very likely that he's using a weak username/password to access our SMTP server, but the problem is that he appears to be using base64 encoding to prevent us from finding out which account he's using. Here's an example from the maillog: May 5 05:52:15 195396-app3 smtp_auth: SMTP connect from (null)@193.14.55.59.broad.gz.jx.dynamic.163data.com.cn [59.55.14.193] May 5 05:52:15 195396-app3 smtp_auth: smtp_auth: SMTP user info : logged in from (null)@193.14.55.59.broad.gz.jx.dynamic.163data.com.cn [59.55.14.193] Is there any way to detect which account it is that he's using?

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• Enabling the telnet client for all Windows 7 PCs on a domain

  - by ICTdesk.net

  The telnet client is disabled by default in Windows 7. I would like to enable the telnet client for all Windows 7 PCs in our domain. I know how to enable it manually: Start Control Panel Programs And Features Turn Windows features on or off Check Telnet Client Hit OK How can I do this for all Windows 7 PCs in the domain? All the Windows 7 PCs are in a separate OU. Can this be enabled by a registry setting that I can apply to all Windows 7 PCs? Can it be done by a Group Policy?

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• How do I burn Xubuntu Live CD

  - by Julian

  I downloaded the 600+ MB Xubunto ISO. Burnt it to a DVD using Nero Burning Rom, as a Bootable DVD. My bootup sequence won't detect XUbuntu and still only detects windows on my Hard Drive even after I set my BIOS to boot from the CDROM first. How do I burn the Live CD with Nero? I'm thinking maybe I should extract the contents and then burn the folder as data to my DVD. P.S: I only have DVDs lying around.

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• Windows Media Player 11 Not Detecting Autoplaylists

  - by tuna

  Every time I open Windows Media Player it fails to detect my autoplaylists stored in <my music library dir>\Playlists. This appears to lead to sync problems since I (exclusively) use autoplaylists to sync music to my mobile. As WMP 11 fails to find the any sync autoplaylists it infuriatingly seems to decide that I want no music at all on my phone and proceeds to delete all my music off my phone. I guess these are two seperate problems but it seems to me they are related. If anyone can shed any light on a fix, that would be much appreciated. Many thanks

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• Bluetooth radio device is not available

  - by Mike

  I reinstalled my Windows 7 operating system, and have since been unable to detect my Logitech m555b bluetooth mouse. Here is some info about my system: I have have a working connection with a bluetooth printer. I have a message in the "My Bluetooth" section of explorer stating "Bluetooth radio device is not available". The Device Manager indicates that the Generic Bluetooth radio is working correctly. The bluetooth "F12" switch is on. Mouse batteries are new and the right way around. I'm presuming that I need a bluetooth driver which is non generic. The computer is a Clevo P150HMx (the version with the GTX485 GPU) with the default WLAN / bluetooth combo card manufactured by Realtek (I think it's a Realtek RTL8188CE card). I think I have the drivers installed, but I still get the generic driver in the Device Manager. I'm confused. Please help, I'm going mad on the touchpad. (Thanks for the touchup wizlog)

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• update ocz vertex le capacity via firmware update

  - by Ben Voigt

  I have an OCZ Vertex LE 100GB drive. It's actually 128GiB of NAND flash, with a whopping 28%+ reserved for write combining. Most 128GiB drives are actually ~ 115GB usable (and marketed as 120GB or 128GB). There were rumors that the reserved fraction could be decreased on OCZ 100GB drives. Can anyone provide a link to firmware that does that, or an official statement that no such firmware exists? (NB: I recently installed the 1.24 firmware from the OCZ site, it didn't affect the capacity. Possibly because the rumors say the capacity change is destructive to existing content.) Of possible interest: flashing firmware was more of a pain than it should have been -- the tool didn't detect the disk until I booted an older Windows install off a secondary hard disk, I suspect the Intel SATA driver is the issue and tool only works with the msachi.sys driver.

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• Allow WRITE access to local folders machine in 2003SBS AD

  - by Dan M.

  Have a SBS2003 client with a mess of a domain that is in process of being cleaned. But, for the life of me I cannot find a setting that will allow write access to the local hard disk for domain users with redirected profiles(to the server). This is needed only for one program that will not follow a symbolic link to the network path, instead it seems to be hard coded to the %appdata% folder but only on the c: drive.... So question is how can I allow "Domain users" write access to the local %appdata% directory? I have tried setting it manually on a machine but it kept resetting to RO no matter how many times I tried. Every time I would un-check the RO property it would reset sometime right after i hit OK. Thanks in advance! Dan

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• Tuning (and understanding) table_cache in mySQL

  - by jotango

  Hello, I ran the excellent MySQL performance tuning script and started to work through the suggestions. One I ran into was TABLE CACHE Current table_cache value = 4096 tables You have a total of 1073 tables. You have 3900 open tables. Current table_cache hit rate is 2%, while 95% of your table cache is in use. You should probably increase your table_cache I started to read up on the table_cache but found the MySQL documentation quite lacking. They do say to increase the table_cache, "if you have the memory". Unfortunately the table_cache variable is defined as "The number of open tables for all threads." How will the memory used by MySQL change, if I increase this variable? What is a good value, to set it to?

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• Complete Public Folder Migration from Exchange 2007 to Exchange 2010

  - by Michael Todd

  We were in the process of migrating from Exchange 2007 to Exchange 2010 and hit a brick wall when trying to migrate Public Folders. After resolving issues with connectivity (and another issue with an old Exchange 2003 server being listed in AD that was causing the replication to fail) it finally appeared that messages were migrating from one server to another. However, we appear to have jumped the gun and ran MoveAllReplicas before the process was complete. We are now stuck with about 210MB of public folders on the new server from a 7GB public folder store on the old server. The messages appear to be available on the old server since running get-publicfolderstatistics shows that there are messages available. We have waited several days for the move to continue but we are stuck at 210MB. Is there something we can do to complete the replication so that all of the messages move from the old server to the new server?

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• Multiple Copies of Windows Calculator

  - by Brian Boatright

  Just did a clean install of Win7 x64. I have a Microsoft Ergo Keyboard 4000 and use the calculator key a lot. Previously I could hit it and get multiple copies of calculator to popup. Now it will only show one copy of calculator. I tried adding a shortcut to the calculator app but it has the same limitation. However if I click the calculator icon it will open a new one each time. How can I fix this so each time I press the calculator key it will open a new copy?

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• Drive Shows No Files But Half Space Gone

  - by Chance Robertson

  I have a 500 GB USB drive. When I go to Windows Explorer or Finder, the drive shows that about half the drive is free. However, when I open either drive in Windows 7 or OS X, no files how up. I have tried to look at the files through the command line and nothing shows. A while back, I hooked it up to my MacBookPro and there was a quick message that said the drive was not ejected properly, blah, blah. And of course I did not read the message and hit OK. It there any way to get back my files from the drive?

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• OpenLDAP with StartTLS broken on Debian Lennny

  - by mr.zog

  I'm trying to get OpenLDAP on Lenny to work with StartTLS. I have a Fedora 13 machine which I'm using as a client for testing. So far the Fedora client is ignoring the 'host' directive in /etc/ldap.conf when I try to connect using ldapsearch. The client wants to connect to 127.0.0.1:389 even if I specify -H ldaps://server.name on when using ldapsearch. /etc/ldap.conf on the client machine is in mode 444. But even when I try connecting locally from an ssh session, I see errors like this: ldap_sasl_interactive_bind_s: Can't contact LDAP server (-1) Someone hit me with a cluebat, plz. Update: you must use ~/.ldaprc for settings such as 'host'.

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• Thunderbird gives " Not enough disk space " alert, after trying to download more emails ( Win 7, 64 bit )

  - by James C

  So, today I have installed Mozilla Thunderbird 24.2.0 on my Windows 7 (64 bit) machine. It was downloading emails, until it hit an error. An alert showed up saying : "There is not enough disk space to download new messages. Try deleting old mail, emptying the Trash folder, and compacting your mail folders, and then try again." Now, disk space is not a problem, there is enough free space left ( almost 50 % of the drive ). How to stop the alert and continue downloading ?

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• Ubuntu Server login not recognizing the keyboard after entering username.

  - by Jeff Malewski

  I'm having similar issues with logging into ubuntu server. chief problem is that once I enter my user name & hit enter, I can't enter anything ffor my password - it won't accept any keystrokes until I press Ctrl+any key. Once I've pressed Ctrl+ any key, I'm able to type again, but have never been able to enter any more than 3 characters before the 60 sec time limit. This problem is present on fresh installs of both 10.04 & 9.10. Part of the problem is lkely to be my antique pc which is an old Emachines Trigems I850 based mbd and an equally ancient Nvidia 4x AGP video card. Initially I was going to install Ubuntu 10.10, but with ORCA running with both screen reader and full screen magnification crashed the system & smoked a stick of Rambus memory. Is there any fix to this problem? Jeff

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• How can I refresh a document I have open in Excel in read-only mode?

  - by RoboShop

  I have an Excel document that is stored on a SharePoint Server, which I always have open on my computer in read-only mode because I need to refer to it. Every so often, in order to get the latest changes, I have to close down the file and reload it again. Are there any options within Excel 2007 which allow me to simply refresh a document I have open in read-only mode to the latest version on the server? Better still, is there a way where this could be done dynamically, without me having to hit refresh?

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• Use Windows Briefcase from the command line

  - by Daniel

  I have a thumb drive on which I take many of my files with me. I would like to synchronize it with my computer automatically when I connect it. I currently have a script run every time I connect it so that I can do the many things that need to be done when it connects (check for updates to the portable applications, etc.). I want my synchronization utility to: Detect conflicts work correctly when I move files or change the folder structure tell the difference between a file that was deleted on one side and a file that was added on the other work from the command line or at least have a command that will open up a window provide a confirmation screen before doing anything The Windows Briefcase does all of these except the command line. Is there any program that does all of these, or is there a way to synchronize the briefcase from the command line?

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• VMware ESXi 4 On-Disk Data Deduplication - possible and supported?

  - by hurikhan77

  Environment: We are running multiple web, database, and application servers which usually share a pretty common installation (gentoo linux) and similar configuration in VMware ESXi 4. The differences are usually only some installed features or differing component versions. To create a new server, I usually choose the most similar (by features) running server, rsync a copy of it into freshly mounted filesystems, run grub, reconfigure and reboot. Problem: Over time this duplicates many on-disk data blocks which probably sums up to several 10's of gigabytes. I suppose if I could use a base system as template with the actual machines based on top of that, only writing changed blocks to some sort of "diff image", performance should improve (increased cache hit rate) and storage efficiency should increase (deduplicated storage space). This would be similar to what ESXi already supports for RAM deduplication (page sharing). Question: Is there any way to easily do this on ESXi 4? I already share the portage tree via NFS but this would not work for the rootfs.

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• Why is my USB-to-VGA'd monitor working, but not showing in Display Settings?

  - by Strilanc

  I have a USB-to-VGA adapter, which I use to connect a second monitor to my laptop (totaling 3 screens). It worked alright with Vista. I upgraded to Windows 7, and now it no longer works properly (I downloaded the latest drivers just to get it to work on 7). The extra monitor is detected and used to extend the desktop (I can move things onto it, etc), but is not shown within the Control Panel. This is annoying because now I can't changes its resolution, set its logical position to match its physical position, etc. Can I do anything, besides waiting for better drivers? I'm mainly concerned with moving its logical position. (I'd also like to understand how Windows can use a monitor it can't detect. Weird.)

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• Mysql Master-ColdMaster

  - by enedebe

  I explain my case: I'm at Amazon AWS and I want to be fault tolerant on a entire region failure. My basic problem is to have the db in sync with 2 regions. My options: Master-Master (high lag) Hand made sync every 5 minutes Master-ColdMaster?! (copy on the fly but Master won't wait the other region commit) In my system we could afford loosing a piece of data (we're not a bank) the last inserts in the db, but we could not afford more than 10 minutes of downtime. The database is small and the level of inserts is low, and I wouldn't affect the normal usage waiting other region commit. Is the 3 solution posible? And the most important, once the primary fail how we can detect and change the rol between master-coldmaster -- coldmaster-master ? Is there any clean-mode to restore between failure? Thank's!

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• Problem setting up DL360G5 with scsi RAID

  - by ernelli

  I have a problem with reinstalling OS on a DL360G5. The BIOS [F9] do not detect any disc controllers and the HP SmartSetup did not find any compatible controllers. Inside the server, the two SCSI disks are conncted to a RAID controller using BCM8603 chipset. How is disc contoller supposed to be setup? I have tried to do a full BIOS reset. EDIT At the moment we suspect that the Smart Array controller E200i/412205-001 is broken. Are there any status LED's that indicate failure or success during start up? At the moment all LED's are off.

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• Why do partially failed/failing switches fail to pass DHCP?

  - by David Mackintosh

  I've noticed this several times: a switch starts to behave oddly. Usually if the switch doesn't fail outright, what tends to get noticed is that DHCP doesn't work. We had a Linksys SRW-224P fail today. Systems which were still connected worked properly, until it came time to renew their DHCP lease. Once the lease expired, they stopped working, but up until then we couldn't detect a failure. This includes PoE VoIP phones -- they work fine until their lease is up, at which point they're done. I've noticed this on the above-mentioned Linksys, three varieties of 3Com, and possibly half a dozen dumb switches. What is it about DHCP that makes it sensitive to failing switches?

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• Why does Finder keeping showing me menus in Spanish?

  - by Ian C.

  This has happened before. A full reboot fixed it. This time: no go. The bottom of my menus, when I command-click on a file in Finder, are in Spanish. You can see a screen grab here: http://twitpic.com/10c63y How can I stop this from happening? I'm sure I inadvertantly hit a key combination that did this, but I'm stumped as to what that was. My System Preference settings for Language & Text have language set to Canadian English.

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• Sync a specific folder of contacts to iPhone

  - by colemanm

  Is there a simple way to organize contacts in Outlook/Entourage and only have a subset of them synchronize with the iPhone over Exchange ActiveSync? Our CEO has thousands of contacts in his mailbox, but would prefer if only a small portion of them synched to his phone over the air... The iPhone's performance takes a huge hit keeping that massive dataset in order. If he could put some of the records in subfolders or something and only sync the top level, I think that would work for him. Does anyone know if this is possible?

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• Provision storage in SAN encironment

  - by wildchild

  hi,.. Can somebody help in understanding how Lun Provisioning is done in clariion based on client requirement. Say, a client needs one 50 GB space on the host( for application) ,two -350 GBs ( for DB and stuff) on the same host and i have 4 raid groups with space of 200 GB in one 50 GB in second and 400 GB and 400GB in rest two all having 5 disks. And , I 'm using Raid 5 only. How do i provision keeping performance in mind( so that performance hit is not there)?..And i need to understand the concept of meta head as well. Please help me by elaborating the above scenario..I am learning to provision storage in non productive environment( b'fore going ahead and working on client prod server) and i have been learning a lot from SF ...I request the seniors here to help me understand it better. Thanks for reading

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