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• iMac with Mountain Lion and Mavericks

  - by bob

  I have been starting up my iMac (Mavericks) with a flash drive that boots up Mountain Lion so that I can use an app that is incompatible with Mavericks. Question: I have a single external backup drive always connected to my Mac. I am thinking of partitioning that drive and giving each partition a unique name, e.g., Backup 1 and Backup 2. I intend then to boot up in Mavericks and tell Time Machine to back up to Backup 1, and then boot up in Mountain Lion and tell Time Machine to back up to Backup 2. Will this work, i.e., will the appropriate partition automatically back up the system in which it is booted?

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• What software can I use to get statistics about the programs I use most? [closed]

  - by pinouchon

  I am looking for software that reports statistics about my program usage over time. It should display output something like this (numbers are made up): Program usage today: Youtube (Chrome) 42:10 9.42% NetBeans 30:52 6.33% Google search (Chrome) 12:03 3.20% Windows explorer 5:43 1.54% Putty 2:23 0.89% ? ? ? Features I look for: Advanced statistics: ability to view a chart, to see statistics today, this week, this month. Program usage should be based on the title of the active window. The time where the user is idle shouldn't count. Ability to group some windows title together, for example, I want to group titles as Stack Overflow and * - Stack Overflow together, same thing for every website and explorer windows. Do you know a program that does something similar?

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• bottle.py on EC2 micro instance causes 2 order of magnitude slowdown

  - by user61633

  Cross-posted from StackOverflow: I wrote a little toy script to solve this type of game, and put it on my new micro EC2 instance. It works perfectly, but while it takes around 0.5 seconds to run a local version, and takes under 0.5 seconds to run both the local and the bottle.py version on my home computer, running the bottle.py version on the EC2 instance takes over 2 minutes. Python has the cpu pegged at 99% the entire time. Only 7.4% memory usage, consistently, and no swapping. The only guess I have is initialization time for bottle.py on EC2, but if it were that, why would it be ~200x faster on my own computer with bottle.py?

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• Kill program after it outputs a given line, from a shell script

  - by Paul

  Background: I am writing a test script for a piece of computational biology software. The software I am testing can take days or even weeks to run, so it has a recover functionality built in, in the case of system crashes or power failures. I am trying to figure out how to test the recovery system. Specifically, I can't figure out a way to "crash" the program in a controlled manner. I was thinking of somehow timing a SIGKILL instruction to run after some amount of time. This is probably not ideal, as the test case isn't guaranteed to run the same speed every time (it runs in a shared environment), so comparing the logs to desired output would be difficult. This software DOES print a line for each section of analysis it completes. Question: I was wondering if there was a good/elegant way (in a shell script) to capture output from a program and then kill the program when a given line/# of lines is output by the program?

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• How can one domain route to an always-changing pool of servers?

  - by ryeguy

  I'm sure this is an easy solution, I'm just not too familiar with how DNS works or if that's even related to this problem. If I'm running a web service on amazon ec2, distributed across many instances, how can I make it so a single domain name can be used to access the entire pool of servers, which will be changing from time to time? Since the instances may be present one second but gone the next (and vice versa), I need a way to randomly pick an active member of the cluster to route to. The updates would have to be instantaneous. Is this even possible, with dns caching and all?

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• SSL issues with puppet agent at openSUSE

  - by Roman Grazhdan

  I have a master running at my vps, and it has a simple helloworld manifest which works fine with any ubuntu machine I have. It connects, exchanges keys and creates test file allright, so I'm sure it's not server issue. The agent which is running at a virtual machine with openSUSE says: err: Could not request certificate: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed. This is often because the time is out of sync on the server or client I believe it's probably a broken or missing lib, since the package is not built very accurately - it wouldn't start out of the box because of wrong path to lockfile, for example. So how do I figure out what exactly is wrong here? The time is allright, I've checked it. I probably could do without SSL if it's possible, since that SUSE machines are just for training, but it's the last opportunity.

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• Preserve the state of the start screen

  - by axrwkr

  What would I need to do in order to cause the start screen to stay the way it was the last time I saw it when I go back to it? I've noticed that every time I leave the start screen it resets back to the beginning, this means that I need to scroll back to where I was to get the same view. I don't want to change the order of the applications on the start screen to accommodate this, I would much prefer it if I could find a way to make the start screen stay the way it was so I can move on from there and also if there was a way to jump to the beginning or the end of the list that would be great. I imagine I can just use the search feature to find a specific program, but that's just an extra step, almost as bad as having to scroll.

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• Schedule PC booting

  - by Ravisha

  I just want to schedule my PC boot up time.I mean @ morning 9:30 it should boot up automatically I am using windows xp

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• what poor management decsions have you had to deal with?

  - by tombull89

  As a junior technician I've had to deal with (or will have to deal with) some problems in the past and only being a junior technicain I don't have the confidence or respect from management staff to speak up. For instance, we're having a entirely new system. From Server 2003/XP going to Sevrer 2008 R2/Win7/VMWare/Digital Signage and the current amount of time dedicated to the training of the IT support department currently stands at 0. They seem to think that all it systems are the same and are going to get a bit of shock when I can't help them. I think there;s some UK legislation saying a school/business have to put money and time aside for training, but I'm not sure. What have you had to deal with?

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• How to "eject" non-existing USB drive from Windows 7 host?

  - by gencha

  I use a USB key which is encrypted with BitLocker to store various data. I keep that key with me all the time. What happens all the time is that I send my home computer to hibernate without ejecting the USB key first. Then I unplug the key and take it with me to work. When I get home, I resume my Windows session and even though the key is not plugged in, the drive still appears as mounted on the system. I can also unmount the non-existing device with mountvol, but that only removes the drive letter. Windows will still think the device is plugged in. When I plug the key in, nothing happens. The device's class ID is listed in mountvol output, but the device is not listed in the Disk Management panel.

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• Thunderbird 3.0.2 stops automatically checking for email

  - by Chris

  Since upgrading to Thunderbird 3.0.2 on Mac OS X 10.6, Thunderbird will intermittently stop checking for messages automatically. Frequently I am presented with the error "This folder is being processed" when manually checking for mail. Restarting Thunderbird fixes the problem, but I have noticed hours can go by where auto checking isn't working, and restarting shows there were dozens of messages waiting to be delivered in that down time. Occasionally I will see "indexing 1 of 2 messages - 0% complete" in the status bar, it will sit there for a long time. Actions I've taken to fix: Deleted all .msf files in all accounts Removed News & Blogs account Staggered the "automatically check for mail" interval for each account Worth noting: after waking up the macbook, TB usually needs to be restarted to resume auto checking for mail. Has anyone experienced such trouble?

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• Seeing DNS changes takes too long on my PC, can it be my router misconfiguration?

  - by Borek

  I administer a few sites and need to update their DNS entries from time to time, e.g., adding an A-record point certain subdomain to a certain IP. When I check sites like http://www.opendns.com/support/cache/, I can clearly see the DNS change taking effect throughout the world - is it just my PC that can't see this change (ping newsubdomain.example.org says it cannot resolve host name) The network "map" is like this: My PC -> my router -> my ISP's router -> internet On my PC, the DNS is set automatically which means that if I run iconfig /all, my router will be returned as the DNS server (192.168.1.1). On my router, the DNS is set to be what my ISP provided me with. Is this correct? What can I do to see new hostnames resolved quicker?

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• How to generate good serials for DNS zones with Puppet?

  - by Bittrance

  My tradition is to set all zone serials to the timestamp at modification. Now that Puppet is my new religion, I want to set serial timestamps when building zone files from exported resources. A somewhat trivialized example may look like this: file { "/tmp/dafile": content = inline_template("<%= Time.now.to_i %>"), } The problem with this approach is that content will be different all the time, which will (ultimately) provoke rebuilding of zone files on each puppet config poll. Is there some way I can insert a timestamp without it being included in the data that is compared against previous state?

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• My Quicken 401(K) account has changed to Checking. How do I fix this?

  - by user36492

  This is actually the second time this has happened to me, but I don't remember what I did last time (nor can I find the original forum post that helped then). I'm using Quicken Mac 2007. My 401(k) account, previously properly set up, has changed, seemingly irrevocably, to a Checking account. When I click "Edit" and try to change the account type, the 401(k) option is grayed out. I've got years of data stored in this account, so I am really hoping there's a way to salvage this data file!

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• Why is my Windows XP not allowing me to turn on sounds?

  - by Rookie

  This started to happen few weeks ago: Every time I start up Windows, the global sound volume is set to muted. I was able to just click the muted button to un-muted and that was fine, until now: Now I cant even click that unmute button! Every time I click the unmute button, I hear a split of a second the music I play, then it stops immediately. It is maybe 10 milliseconds until it mutes it again. In theory I could write a program to click that button continuously, but is there another solution to fix this? Or is this a broken hardware problem and Windows knows it and therefore doesn't allow me to enable sounds or my computer would break apart? Any ideas what could be causing this? A weird virus that's purpose is to piss me off? That weird this whole issue is, really, doesn't make any sense at all.

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• Finding throuput of CPU and Hardrive on Solaris

  - by Jim

  How do I find the throughput of a CPU and the hard disk on an OpenSolaris machine? Using mpstat or iostat? I'm having a hard time identifying the throughput if it is given at all in the commands output. For example, in mpstat there is very little explanation as to what the columns mean. I've been using the syscl column divided by time interval to find the throughput but to be honest I have no idea what a system call truly is. I'm trying to to analyze a hardrive and CPU while writing a file to the hardisk and when at rest.

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• How can I prevent my computer from waking up accidentally?

  - by Ivo Flipse

  When I put my computer into sleep mode, it will wake up while I'm away from it. There's nothing near the computer that could move the mouse or accidentally press a button and I have no idea what might be causing it. I tried checking what woke it, apparently LASTWAKE only tells me that it has been in sleep mode, not what woke it up. I also couldn't find anything in my Power Options regarding Sleep that seems off. Poking around in the Event Viewer I notice the following: The Power-Troubleshooter event at the top notes the following: The system has returned from a low power state. Sleep Time: ?2012?-?10?-?27T11:31:53.408927000Z Wake Time: ?2012?-?10?-?27T12:25:51.887029300Z Wake Source: Unknown So does anyone have an idea to find out what might be causing it and how I can prevent my computer from randomly waking up?

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• rsnapshot stats

  - by Obscur Moirage

  I'd like to retrieve the following stats from rsnapshot files synced added files modded files deleted files Is there a feature to retrieve these in rsnapshot, or is there another product that's able to do it? EDIT: As requested, I'll try to show that I'm not just asking what I want to do without any research. I wasn't able to locate any rsnapshot feature doing this. Maybe I'm searching in a wrong direction. So, I've built a not very pretty script, called each time before rsnapshot is ran. This Perl script stores each file MD5, in order to compare backup files structures between rsnapshot updates. I'm pretty sure it's worthless to show this code here. I think that keeping an eye on what change on a server, for example, is a useful feature. So, I'm asking. @pauska Most of the time, I'm trying to search for an answer myself, which is not the case here. Thanks

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• How to measure that a host is good for users in Egypt ?

  - by Sherif Buzz

  Hi all, I currently have a site that's hosted in Texas. The majority of my users are from Egypt and I'm a bit concerned that the current hosting is not the optimal in terms of performance. The site is not slow but for how can I know if, for example, hosting it in Europe or Asia is better ? To clarify I need to know there is a way that I can test different hosting options - for example how can I test the average response time between Egypt and a host in Texas, the average response time between Egypt and a host in the UK ?

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• Pushing Large Files to 500+ Computers [closed]

  - by WMIF

  I work with a team to manage 500-600 rented Windows 7 computers for an annual conference. We have a large amount of data that needs to be synced to these computers, up to 1 TiB. The computers are divided into rooms and connected through unmanaged gigabit switches. We prepare these computers ahead of time with the Windows installation and configuration, plus any files that we have available to us before we send the base image in for replication by the rental company. Every year, we have presenters approach on site with up to gigs of data that need to be pushed to the room that they will be presenting in. Sometimes they only have a few files that are small sizes, such as a slide PDF, but can sometimes be much larger 5 GiB. Our current strategy for pushing these files is using batch scripts and RoboCopy. For the large pushes, we actually use a BitTorrent client to generate a torrent file, and then we use the batch-RoboCopy to push the torrent into a folder on the remote machines that is being monitored by an installed BT client. Often times, this data needs to be pushed immediately with a small time window. We have several machines in a control room that are identical to the machines on the floor that we use for these pushes. We occasionally have a need to execute a program on the remote machines, and we currently use batch and PSexec to handle this task. We would love to be able to respond to these last minute pushes with "sorry, your own fault", but it won't happen. The BT method has allowed us to have a much faster response time, but the whole batch process can get messy when there are multiple jobs being pushed. We use Enterprise Ghost for other processes, and it doesn't work well in this large of scale, plus it is really quite expensive for a once-a-year task like this. EDIT: There is a hard requirement that the remote machines on the floor are running Windows. The control machines do not have a hard OS requirement. I would really like to stay away from Multicast because of complications with upstream routers. Is Multicast or BitTorrent the better way to go on this? Is there another protocol that might work better?

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• JBoss DataSource - How can ConnectionCount be larget than MaxSize?

  - by Qben

  I am running JBoss 4.0.5GA and I have stumbled upon a strange scenario (In my eyes anyway). When I decreases the <max-connections> to 1 for a Quartz DataSource and restart the server everything works fine. When I check the JMX console I can see that ConnectionCount and MaxConnectionInUseCount are both 2. The question is, how can the ConnectionCount be higher than the pool MaxSize (Which is 1 in JMX console as expected)? As a note I did this to try to trigger a production problem I have from time to time where a Quartz DB connection cannot be retrieved for some odd reason (Pool not full).

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• Which TCP ports to use?

  - by rowatt

  Is there a TCP port range which I can be sure will not be used by anything else for traffic between two machines? If I am reading RFC6335 correctly, I can be sure that no other applications will use specific ports in the Dynamic/Private/Ephemeral range of 49152-65535. However, if I understand correctly, it also states (section 8.1.2) that an application shouldn't assume that any given port in that range is available at any given time, which would mean I can't be 100% sure that it will be unused all the time. Specifically, I want to assign specific SSH traffic to a different port for the security benefit and so I can classify it differently for QoS purposes, and not have to worry about changing the port in the future.

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• When should .local be used?

  - by hydroparadise

  So, I've set up a few Win Servs in my time and always did the .local thing when there was a router that sepearated my internal from external networks. Now that I'm setting up an *nix box for the first time, does this concept still apply? Do I still want my FQDNs (/etc/hostname) to show .local or .com for all my machines (mixed: linux servers, win workstations) inside of my network. This question comes in context of always having Active Directory hold my hand every step of the way, where now I'm setting up an DNS machine manually.

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• Making Thunderbird auto-add SMTP identities whenever I reply

  - by 0xC0000022L

  How can I teach Thunderbird to automatically add an SMTP identity whenever I reply to an email directed to <whatever>@<mydomain>? So if an SMTP is configured for <mydomain> but no identity exists for <whatever>@<mydomain>, how can I make Thunderbird dynamically recognize this and add it. Currently I have to manually add the identity every single time, but I would prefer it to to be added ad-hoc. As long as Thunderbird was configured to know about the SMTP serving <mydomain> this should be trivial, but I couldn't find an option. An add-on or something like a catch-all/wildcard identity would also do as long as it doesn't require manually setting up a new identity every time.

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• How to verify if my copy operation is complete in Windows 7?

  - by Tim

  Yesterday, I was leaving some job of copying a directory to run overnight. This morning however, I found the computer had restarted because of Windows Update or something. I was wondering if there is some way to check if the copy is complete? One way I guess would be check the last modified time of the copy, and when the system restarted. But I was wondering where to find the time when the system restarted? I was also wondering if where to find some logging files that have the records. I know Event Viewer, but don't know where to find within it. Other methods are welcome too. I also would like to hear suggestions for other ways to accomplish the copy instead of just simple copy and paste. Thanks and regards!

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