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• Simple way to get keys/mouse buttons working in Synergy (mac client, pc server)

  - by Damon

  I'm trying to get Synergy working running as client on my Mac with SynergyKM Preferences panel. It's performing generally fine (just some real slow downs when my network is under heavy use, usually from youtube videos). The main thing I want to get working is none of the special buttons on my mouse are working on the client.. just the scroll and middle click.. but I have back/forward buttons I'd like to have working. Also my Windows Comfort Curve Keyboard has some extra keys and I'd like to know how to set those up to perform operations on my Mac client. I could have sworn that home/end weren't working but they seem to be now.. perhaps it's application specific..

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• openVAS - Microsoft RDP Server Private Key Information Disclosure Vulnerability - false Alarm?

  - by huebkov

  I performed a openVAS scan on a Windows Server 2008 R2 and got a report for a high threat level vulnerability called Microsoft RDP Server Private Key Information Disclosure Vulnerability. An remote attacker could perform a man-in-the-middle attack to gain access to a RDP session. Affected Software is Microsoft RDP 5.2 and below. My server uses RDP 7.1, is this alarm a false alarm? Security Advisor Pages say: Solution Status Unpatched, No remedy... References http://secunia.com/advisories/15605/ http://xforce.iss.net/xforce/xfdb/21954/ http://www.oxid.it/downloads/rdp-gbu.pdf CVE: CVE-2005-1794 BID:13818

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• How do I use rsync to sync my repo on my mac to university server where I have ssh access?

  - by snihalani

  I need to use my university's ssh access and run my programs there for testing. I don't have sudo access there. It doesn't have vncserver there either. I would work with vim and make but I need git at least. Now I am looking into rsync to sync my current source directory into a remote directory and I'll ssh into the directory and run my make file to test it. I am looking at the man page of rsync and it looks very complicated. Can anyone please help me with this? I have googled in superuser and all commands seem different for different cases. Can anyone please help me with this?

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• Web service access fails when users password is in warning period

  - by uSlackr

  We have a number of locally installed .Net apps that communicate via web services. Authentication in IIS is handled by Windows Authentication so no additional login is required. We recently began seeing a problem where users are getting a application 403 error when there password is 14 days (or less) from expiring. As this sometime happens in the the middle of the day (login in the morning OK, but password reaches <14 days during the day), this comes as a surprise as they haven't been warned to change their password. Of course, one would expect they should be able to work until the password is expired. Any idea on what could be happening here? Why would IIS reject a login if the passsword hasn't actually expired? Can we change that behaviour? Thanks \\Greg

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• What is the best time to schedule regular updates on inhouse production server?

  - by akira

  Given an inhouse server running in production mode I would like to keep the impact on the users as low as possible when deploying regular updates (to the server itself, not the user machines .. but that would be a pretty similar problem). The obvious answer to my question is "at night, when the users are at home". But "night" is a long period of time. Should one start early in the evening to perhaps catch problems with the update early on and be ready to rollback? Or is it better to start early in the morning and use the first users as "guinea pigs" to faster trigger the problems? Or in the middle of the night when the concentration of the one overseeing the update is pretty low but it is guaranteed to have no open file handles of some late working users? Are there any research papers on the topic?

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• Graphing per-user CPU usage on a Linux machine

  - by mart1n

  I want to graph (graphical output would be great, i.e. a .png file) the following situation: I have users A, B, and C. I limit their resources so that when all users run a CPU intensive task at the same time, those processes will use 25%, 25%, and 50% of CPU. I know I can get the real-time stats using top but have no idea what to do with them. I've searched through the huge top man page but haven't found much on the subject of outputting data that can be graphed. Ideally, the graph would show a span of maybe 30 seconds. Any ideas how to achieve this?

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• What does the [0/0] indicator mean when entering copy mode in tmux?

  - by bps

  When entering copy mode in tmux, an indicator in the upper right corner shows "[0/0]". I can't find any documentation in the man page about what these numbers mean, and it's difficult to search since Google throws away the brackets and slash. This is generated by window_copy_write_line() in window-copy.c: if (py == 0) { size = xsnprintf(hdr, sizeof hdr, "[%u/%u]", data->oy, screen_hsize(data->backing)); if (size > screen_size_x(s)) size = screen_size_x(s); screen_write_cursormove(ctx, screen_size_x(s) - size, 0); screen_write_puts(ctx, &gc, "%s", hdr); but the variable names aren't very instructive to someone who isn't familiar with the code. Any hints as to what these numbers mean?

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• Do you leave Windows Automatic Updates enabled on your production IIS server?

  - by Nobody

  If you were running a 24/7 website on Windows Server 2003 (IIS6). Would you leave the Windows automatic update feature enabled or would you turn it off? When enabled, you always get the latest security patches and bug fixes automatically as soon as they're available, which is the most secure choice. However, the machine will sometimes get automatically rebooted to apply the updates leading to a couple of minutes of downtime in the middle of the night. Also, I've seen rare occasions where the machine does not restart correctly resulting in further downtime. If auto updates are off, when do you apply the patches? I guess you have to use a load balancer with multiple web servers and rotate them out of the production site, apply patches manually, and put them back in. This can be logistically inconvenient when the load balancer is managed by a hosting company. You will also have machines in production that don't always have the latest security patches and you have to routinely spend time deciding which patches to apply and when.

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• Vertically resize two windows at same time?

  - by Guy

  I love the new feature in Windows 7 where I can grab the title bar and "slam" a window against the right edge of the computer and it will size that window to the right half of the screen. I can then grab another window and do the same against the left side of the screen. Once I've done that I often find that one of those windows needs a bit more horizontal space and the other can do with less. So I grab the edge in the middle of each window and resize that window so I can most efficiently use my screen space. Problem is that I have to do this twice, once for each window. Is there a way to grab the inside vertical edge of both windows at the same time so that I can make one wider and the other smaller at the same time?

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• Sharing wifi connection

  - by andser

  I have some little problem while sharing wifi connection. I have 2 laptops. I need connection scheme like this: laptop1 [wlan0] >>>>>>>> laptop2 [wlan0] (in ad-hoc mode, as ap, etc) >>>>> laptop2 [wlan1] >>>> internet. laptop1 [wlan0] connecting to laptop2 [wlan0]. laptop2 connecting to internet through wlan1. Is it possible? OS: Ubuntu on both machines I tried this man (setting laptop2 wlan0 in ad-hoc mode): https://help.ubuntu.com/community/WifiDocs/Adhoc#Network_Manager laptop1 connects to laptop2, but can't access to internet.

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• tricks for speeding up tar while tarring up a huge directory of little files?

  - by Trevor Harrison

  I'm trying to tar up a directory that has about 3M tiny files in it. Tar is chugging along, but I'm thinking its going to take longer than I can wait. I'm wondering if telling tar to not store metadata (owner, group, perms) would reduce the churn on reading and re-reading this huge directory and maybe speed things up, and if there is a tar switch that does this. My initial perusal of the man page only gets me something like --no-xattrs, which looks like a start, but I was hoping someone had some specific knowledge.

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• What antivirus software supports updates without an internet connection?

  - by Michael Gundlach

  I'm putting antivirus software on Windows 7 computers in the middle of Africa. The computers don't have internet access, but still need to be protected against viruses from CDs and thumbdrives. Separate from these computers is one computer that does have extremely spotty internet access. What's the best AV software for this situation? The important part, as I see it, is that we need to keep the computers up to date, but can't let the AV software suck down updates at its leisure: the computers are disconnected, and getting emails onto the connected computer is a challenge enough. We thought we might transfer update files to the connected computer using a protocol that can handle repeated connection drops (e.g. FTP with resume.) Then we'd manually apply the update files to the disconnected computers. Does any AV software support this? Is there a better solution?

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• php returns junk characters at end of everything

  - by blindJesse

  php appears to be adding junk characters to the end of everything it returns on a friend's site. I'm not an admin on the server but I'd like to give an informed complaint to get this fixed. The site is http://daytoncodebreakers.org. You can see some junk at the end of every page on the site (what appear to be question marks with something else in the middle). I originally thought this was a wordpress issue, but check out http://daytoncodebreakers.org/whereisini.php (which is just a call to phpinfo), and http://daytoncodebreakers.org/hello.php (which is just 'Hello World'). I'm not sure if this is the most appropriate site, but I think this is a server config issue, so I'm posting it here (rather than stackoverflow or superuser). Feel free to move it if want.

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• Use test to check for condition with find and execdir option

  - by slosd

  I think I can keep my question short. Why does the following command produce no output? find /usr/share/themes -mindepth 1 -maxdepth 1 -type d -execdir test -d {}/gnome-shell \; I expected it to print all folders in /usr/share/themes that contain a folder gnome-shell. Several websites suggest that this usage of test as a command in exec/execdir is possible. From man find: -exec command ; Execute command; true if 0 status is returned. [...]

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• I do not understand -printf script

  - by jerzdevs

  I have taken over the responsibility of RHLE5 scripting and I've not had any training in this platform or BASH scripting. There's a script that has multiple pieces to it and I will ask only about the second piece but also show you the first, I think it will help with my question below. The first part of the script shows the output of users on a particular server: cut -d : -f 1 /etc/passwd The output will look something like: root bin joe rob other... The second script requires me to fill in each of the accounts listed from the above script and run. From what I can gather, and from my search on the man pages and other web searches, it goes out and finds the group owner of a file or directory and obviously sorts and picks out just unique records but not really sure - so that's my question, what does the below script really do? (The funny thing is, is that if I plug in each name from the output above, I'll sometimes receive a "cannot find username blah, blah, blah" message.) find username -printf %G | sort | uniq

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• cp -u is illegal on mac. What are the alternatives?

  - by Barnabas Szabolcs

  I have a MacbookPro Lion, and I have tried to archive my files that is tried to copy and overwrite if the source is newer than the destination. I tried the following command cp -u source destination but it says, -u is illegal. I also did not find --update or -u in the man cp. Can you please help, what can I do in this situation? [I have the question moved over here from SO, so feel free to answer it once more. I hope this is the right way of dealing with this]

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• What's the proper way to change a process' scheduling policy to IDLE?

  - by ??O?????

  Hello. I have a long running process on a server running Ubuntu Server 9.10. I would like to make it run under the SCHED_IDLE policy using the chrt command. However, after reading the man page, I can't manage to understand the proper way to issue the command for a running process. I've tried unsuccessfully: # chrt -i -p 688 pid 688's current scheduling policy: SCHED_OTHER pid 688's current scheduling priority: 0 # chrt -p -i 688 pid 688's current scheduling policy: SCHED_OTHER pid 688's current scheduling priority: 0 # chrt -p 688 -i chrt: failed to set pid 0's policy: Invalid argument I'll keep trying, but do you know how to do what I want?

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• why is this happening?-"dhcpcd will not work correctly unless run as root"

  - by user330317

  i have installed archlinux and gnome on virtualbox. had no problem connecting to internet but now after installing gnome and rebooting there is no internet connection after following instructions from archwiki,i have tried . but i cant figure out the problem please help. host-63drhd% sudo netctl status enp0s3 ? [email protected] - Networking for netctl profile enp0s3 Loaded: loaded (/usr/lib/systemd/system/[email protected]; static) Active: inactive (dead) Docs: man:netctl.profile(5) host-63drhd% sudo netctl enable enp0s3 Profile 'enp0s3' does not exist or is not readable host-63drhd% sudo dhcpcd dhcpcd[1486]: sending commands to master dhcpcd process host-63drhd% dhcpcd dhcpcd[1543]: control_open: Permission denied dhcpcd[1543]: dhcpcd will not work correctly unless run as root dhcpcd[1543]: open `/run/dhcpcd.pid': Permission denied dhcpcd[1543]: control_start: Permission denied dhcpcd[1543]: version 6.3.2 starting dhcpcd[1543]: enp0s3: if_init: Permission denied dhcpcd[1543]: enp0s8: if_init: Permission denied dhcpcd[1543]: no valid interfaces found dhcpcd[1543]: no interfaces have a carrier dhcpcd[1543]: forked to background, child pid 1544

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• Testifying that somaxconn change can make a difference

  - by petermolnar

  I got into an argument on the net.core.somaxconn parameter: I was told that it will not make any difference if we change the default 128. I believed this might be enough proof: "If the backlog argument is greater than the value in /proc/sys/net/core/somaxconn, then it is silently truncated to that value" http://linux.die.net/man/2/listen but it's not. So does anyone know a method to testify this with two machines, one running, for example MySQL or LVS and the other is hammering it in a GBit network? I'm opened to any solution, scripts are slightly more welcome.

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• The authenticity of host “host” can't be established

  - by Candroid

  I'm running a web app on a Linux server which connects to other servers. When I run the project on my Play framework on loclhost it runs fluently. When I run it on my Linux server I get the above message 3 times, one for each server. I read a post about it where it says that it is a man in the middle warning and if I write yes it should work. But though a write yes, nothing happens and the app doesn't run, and the error message keeps popping up. I tried creating private and public keys and add them to the authorized_keys file, but it didn't work either. What should I so to run my app?

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• What PowerShell/WSMan clients or queries are consuming more than 1000 requests per 2 seconds?

  - by makerofthings7

  Exchange 2010 remote administration tools are complaining with the following error [txexmb02.ibm.com] Connecting to remote server failed with the following error message : The WS-Management service cannot process the request. The system load quota of 1000 requests per 2 seconds has been exceeded. Send future requests at a slower rate or raise the system quota. The next request from this user will not be approved for at least 558475776 milliseconds. For more information, see the about_Remote_Troubleshooting Help topic. + CategoryInfo : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [], PSRemotingTransportException + FullyQualifiedErrorId : PSSessionOpenFailed VERBOSE: Connecting to TXEXHC02.ibm.com The help document this error referrers to says this is a WS-Man error. We're running SCOM 2007 R2 and am thinking that is increasing the query count, but I need to prove it.

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• How can I get the comment of the current authorized_keys ssh key ?

  - by krosenvold

  Edit: What I really need to know WHICH ssh key from authorized_keys has been used to identify the currently logged on user. According to "man sshd": Protocol 2 public key consist of options, keytype, base64-encoded key, comment. I see that when I use ssh-keygen, the comment is usually the local identity of the user. Is there any way to access this value when I'm on the remote computer ? (Kind of like the SSH_CLIENT shell variable) (Assuming I enforce the comment to be a remote identity of some sort, I would like to log this from a shell-script! This is on ubuntu)

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• How do you do the offsite hard drive backups?

  - by kentchen

  I have been doing hard drive backups for a while, which I believe a lot of you guys do as well, but am having trouble figuring out a better way storing them offsite. I am wondering how you guys out there do that. Any policy or tips & tricks when it comes to offsite store your backups, mainly hard drives not tapes. Thanks in advance. [update] Thanks for mentioning the online backup. We are actually in the middle of this process. And I 100% agree that it's the ultimate way to go. However, considering the cost, sometimes it may not be the option, as it's a quite expensive option if you also consider the application level. I guess online backup can be a very good one in the separate topic. :)

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• Mac app to apply certain settings based on selected location (profile)?

  - by Jonathan

  When my MacBook is connected to my Thunderbolt Display, I want WiFi to be turned off, Bluetooth to be turned on and the screen brightness to be at max. On the road I want WiFi to be turned on, Bluetooth to be turned off and the screen brightness to be somewhere in the middle. It would be easy if there was an application that would let me create several profiles (like 'Home' and 'On the road'), which I could easily select (from Dashboard or the menu bar). The profile settings would then be applied instantly. Does an application like this exist?

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• How to make ssh match known_hosts to host/ip:port instead of just host/ip?

  - by Prody

  I have two machines behind a firewall, with the ssh ports forwarded to 2201 and 2202. When I ssh host -p 2201 it asks if I trust the machine, I say yes, it gets added to ~/.ssh/known_hosts Then I ssh host -p 2202 it doesn't let me, because there's already a known_host for this IP in ~/.ssh/known_host:1 (the file was empty when I started, so line 1 is the one added by the previous ssh run) This happens on CentOS 5.4. On other distros (I've tried Arch), it appears that ssh matches the knwown_hosts to the ports too, so I can have multiple fingerprints for multiple ports on the same host/ip without any problems. How can I get this same behavior for CentOS? I couldn't find anything in man ssh_config. (or at least not without disabling fingerprint checking)

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