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  • zsh conditional statement help

    - by Roy Rico
    Feeling kinda dumb right now: Why is my contional always true? I've tried # this should let me know what's not a directory or # symbolic link. whoa=`find ${MUSICDIR} ! -type l ! -type d | wc -l` # I would expect if it's 0 (meaning nothing was found) that # one of these statements would evaluate to false, but so far # it's always evaluating to true if [[ "${whoa}" != "0" ]] if [[ ${whoa} -gt 0 ]] What am I missing?

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  • After upgrade to Lucid, computer doesn't respond to clicks or pressed keys until X restart

    - by Victor Stanciu
    I upgraded to Lucid today, and after the update the display is "frozen". I can move the cursor, but I cannot click on anything, nor does it respond to any keys. The only way to fix it is to SSH into the machine (which, by the way, works just fine), and kill and start X. Then I'm taken back to the login screen and everything works. This happens every time I boot. Let me know if there are more details that I can provide.

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  • Take a screenshot of an entire webpage in Opera

    - by robertc
    Is there some tool within Opera, or possibly an add-on, which will let me take a screenshot of an entire web page? I usually use Screengrab to do this with Firefox, but in this situation I want a screenshot of the page as Opera renders it (because I want to show the page as rendered with HTML5 form controls like date and time). I am currently using Opera 10.60 x86_64 on Fedora 12, so solutions that work in browser would be preferable rather than external programs.

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  • Is there a way to create a cmd shortcut for a specific folder on W7 or/and W8?

    - by Hinstein
    Let say i have 3 different folders that i want to access with CMD C:\Users\Henok\Documents\Visual Studio 2012\Projects\TestApp1\Debug C:\Users\Henok\Documents\Visual Studio 2012\Projects\TestApp2\Debug C:\Users\Henok\Documents\Visual Studio 2012\Projects\TestApp3\Debug I wonder if there is a way to create 3 different cmd shortcuts to access those directory (folders) individually without changing the default cmd directory location. Forgive me for my broken English, and thanks for your time.

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  • how to install software in a different location?

    - by studiohack
    When I am installing software, I usually like to choose where it installs to, other than C:/Program Files...However, from time to time, I come across software that does not let you choose the install location...how can I get around this and choose the install location? This is handy in situations such as multiple partitions or separate system and data partitions, etc... Any ideas? Thanks! (using Windows 7)

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  • How to get new screws for HP Dv7 laptop

    - by blaine
    The other day I have noticed that there are 3 screws missing from the bottom of my 3 month old HP Pavilion dv7t-7000 laptop. This is causing me various problems such as an unstable screen, and who knows what else soon. My laptop is still under the basic warranty, however, I live outside the USA where I purchased it. What is the best way to get replacement screws for my laptop besides looking around the house and trying to find one that fits? Let me know if you need pictures

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  • Does a USB hub affect performance?

    - by user1018733
    I have two devices I want maximum throughput and latency with. (Midi drums and midi keyboard for example) Would connecting both to the same USB port via a hub effectively limit the maximum data transfer rate to 1/2 to each of them? I am assuming yes, but I didn't know if USB hubs had a handshaking and priority giving protocol available (e.g. let the device with the longer built up buffer of data communicate first) Thanks

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  • Are there any reasons to duplicate table in the same database ?

    - by bob
    Let says we have several MySQL server, one master and some slaves. A member table which contains more than 5.000.000 peoples. Are there any reasons (performance, atomicity, etc..) to use duplicate tables like member_1, member_2, member_3 and then switch randomly when doing operation on it ? (especialy SELECT query) ?

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  • Is there a system monitoring tool that lets me write complex queries against the data?

    - by benhsu
    I am looking for a system stat collection tool that will let me write queries against the data collected. I am planning to answer questions like: what is the average load, over the last 30 days, on this machine between 9AM and 5PM, as opposed to at night what was the average disk io on these 10 machines yesterday what was the average daytime memory usage on these 10 machines last week, as opposed to 2 weeks ago Has anyone done this with, say, collectd or graphite?

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  • Windows Vista - behavior with RAM minimum

    - by benc
    I am considering creating a Vista install, in VirtualBox, in a minimum configuration. The Microsoft pages seem consistent on the most important points: 1 GB of system memory 40 GB hard drive with at least 15 GB of available space 128 MB of graphics memory (minimum) In my experience sometimes these recommendations are accurate. (For example, I have a Windows XP in VirtualBox that generally behaves well running in the stated minimum). If anyone has some practical experience (especially the type that could save me hours of pain), please let me know.

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  • Reverse a .htaccess redirection rule

    - by Aahan Krish
    Let me explain by example. Say, I have this redirection rule in my .htaccess file: RedirectMatch 301 ^/([^/]+)/([^/]+)/$ http://www.example.com/$2 What it basically does is, redirect http://www.mysite.com/sports/test-post/ to http://www.mysite.com/test-post/. Now, how do I modify the .htaccess rule to do the opposite? (i.e. redirect http://www.mysite.com/test-post/ to http://www.mysite.com/sports/test-post/)

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  • Make `mount` choose a device

    - by o_O Tync
    I have a mount point — let it be /media/question — and two possible devices: a physical HDD and a remote NFS folder. Sometimes I plug the device in physically, in other cases I mount it via NFS. Is there a way to specify both of them in fstab so that executing mount /media/question will preferably choose physical volume, and when it's not available — NFS?

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  • I cannot stay logged in to a site with my router

    - by Luke101
    I have a D-Link home router and my isp is Time warner. When I try to login to any site it does not let me. The website does not keep me logged in when I navigate the pages. I have to keep loging in for every web page I see. When I connect my cable modem directly to my computer I am able to stay logged in. Any ideas here?

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  • How to allow unprivileged apache/PHP to do a root task (CentOS)

    - by Chris
    I am setting up a sort of personal dropbox for our customers on a CentOS 6.3 machine. The server will be accessible thru SFTP and a proprietary http service base on PHP. This machine will be in our DMZ so it has to be secure. Because of this I have apache running as an unprivileged user, hardened the security on apache, the OS, PHP, applied a lot of filtering in iptables and applied some restrictive TCP Wrappers. Now you might have suspected this one was coming, SELinux is also set to enforcing. I'm setting up PAM to use MySQL so my users in the web application can login. These users will all be in a group that can use SSH only for SFTP and users will be chrooted to their own 'home' folder. To allow this SELinux wants the folders to have the user_home_t tag. Also the parent directory needs to be writable by root only. If these restrictions are not met SELinux will kill the SSH pipe immediately. The files that need to be accessible thru both http and SFTP so I have made a SELinux module to allow Apache to search/attr/read/write etc. to directories with the user_home_dir_t tag. As sftp users are stored in MySQL I want to setup their home dirs upon user creation. This is a problem since Apache has no write access to the /home dir, it's only writable by root since it's required to keep SELinux and OpenSSH happy. Basically I need to let Apache do only a few tasks as root and only within /home. So I need to somehow elevate the privileges temporarily or let root do these tasks for apache instead. What I need to have apache do with root privileges is the following. mkdir /home/userdir/ mkdir /home/userdir/userdir chmod -R 0755 /home/userdir umask 011 /home/userdir/userdir chcon -R -t user_home_t /home/userdir chown -R user:sftp_admin /home/userdir/userdir chmod 2770 /home/userdir/userdir This would create a home for the user, now I have an idea that might work, cron. That would mean the server needs to check for users that have no home every minute, then when creating users the interface would freeze for an average of 30 seconds before the account creation can be confirmed which I do not prefer. Does anybody know if something can be done with sudoers? Or any other idea's are welcome... Thanks for your time!

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  • Why does squid reject this multipart-form-data POST from curl?

    - by keturn
    This fails: $ curl --trace multipart-fail.log -F "source={}" http://127.0.0.1:3003/jslint With a squid status 417 error, ERR_INVALID_REQ. trace of failing curl request trace of successful curl request that uses urlencoding (curl -d) instead of multipart (curl -F) formatted version of squid's error message I've never had this in practice through a web browser, so it's probably curl usage instead of squid, but if I tell curl not to use the squid proxy, the web application on the other end accepts it just fine. (If there's a more appropriate StackExchange site for this, please let me know.)

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  • Apache - suExec - FastCGI - PHP = seciruty issue

    - by Jari V.
    I installed Apache with FastCGI (mod_fastcgi), suExec and PHP on my local development box. Working perfectly, expecting one thing. Let's say I have two users: user1 - /home/user1/public_html user2 - /home/user2/public_html I discovered a serious security hole in my configuration: I can include a file from user2 web root in user1 file. How to prevent? Any tips? php-cgi process is running under correct user.

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  • How do I increase copy/paste buffer size in Linux

    - by Thrawn
    Hi all, I'm trying to copy and paste lines of code to the linux terminal. However, I've noticed that when the copied text is too long (let's say, 60 or more lines), it gets trimmed and altered in an apparently random way (e.g. some characters missing). I found the same problem in Ubuntu Karmic Koala, Fedora 10 and Ubuntu Jaunty Jackalope. Any clue why this happens and if I can increase the size of safely copy/pasteable text? Thanks!

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  • High CPU usage - symptoms moving from server to server after bouncing

    - by grt3kl
    First off, I apologize if I didn't include enough information to properly troubleshoot this issue. This sort of thing isn't my specialty, so it is a learning process. If there's something I need to provide, please let me know and I'll be happy to do what I can. The images associated with my question are at the bottom of this post. We are dealing with a clustered environment of four WebLogic 9.2 Java application servers. The cluster utilizes a round-robin load algorithm. Other details include: Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_12-b04) BEA JRockit(R) (build R27.4.0-90_CR352234-91983-1.5.0_12-20071115-1605-linux-x86_64, compiled mode) Basically, I started looking at the servers' performance because our customers are seeing lots of lag at various times of the day. Our servers should easily handle the loads they are given, so it's not clear what's going on. Using HP Performance Manager, I generated some graphs that indicate that the CPU usage is completely out of whack. It seems that, at any given point, one or more of the servers has a CPU utilization of over 50%. I know this isn't particularly high, but I would say it is a red flag based on the CPU utilization of the other servers in the WebLogic cluster. Interesting things to note: The high CPU utilization was occurring only on server02 for several weeks. The server crashed (extremely rare; we are not sure if it's related to this) and upon starting it back up, the CPU utilization was normal on all 4 servers. We restarted all 4 managed servers and the application server (on server01) yesterday, on 2/28. As you can see, server03 and server04 picked up the behavior that was seen on server02 before. The CPU utilization is a Java process owned by the application user (appown). The number of transactions is consistent across all servers. It doesn't seem like any one server is actually handling more than another. If anyone has any ideas or can at least point me in the right direction, that would be great. Again, please let me know if there is any additional information I should post. Thanks!

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  • In Windows Command Prompt, how to get the last command that started with some letters?

    - by NikoBellic
    Let's say I entered a bunch of commands one after another: rm blah.txt pwd ls cd .. cd blah pwd If I want to get "rm blah.txt" to appear again without typing the whole thing again, I can press up 6 times. But is there a faster way? Can filter my command history based on some text? Intuitively, I would like to just type in r and then press up to search through my command history for only commands that started with "r".

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  • How to configure apache's mod_proxy_html to work as an ajax proxy?

    - by dcerecedo
    I'm trying to build a web site that let's you view and manipulate data from any page in any other website. To do that, I have to bypass 'Allow Origin' problems: i'm loading the other domain's content in an iframe and i have to manipulate its content with javascript downloaded from my domain. My first attempt was to write a simple proxy myself, requesting the other domains page through a server proxy coded in Java that not only serves the content but rebuilds links (src's and href's) in the content so that the content referenced by these links alse get downloaded through my handmade proxy. The result is not bad but has problems with url's in css and scripts. It's then that i realized that mod_proxy_html is supposed to do exactly all this job. The problem is that i cannot figure out how to make it work as expected. Let's suppose my server runs in my-domain.com and to proxy and transform content from another domain i'd make a request like this: my-domain.com/proxy?url=http://another-domain.com/some/content I'd want mod_proxy_html to serve the content and rewrite following URLs in http://another-domain.com/some/content in the following ways: Absolute URLs not from another-domain.com: no rewritting Relative from root urls:/other/content - /proxy?url=http://another-domain.com/other/content Relative urls: other/content - /proxy?url=http://another-domain.com/some/content/other/content Relative to parent urls: ../other/content - /proxy?url=http://another-domain.com/some/other/content The url should be specified at runtime, not configuration time. Can this be achieved with mod_proxy_html? Could anyone provide a simple working configuration to start with? EDIT 1-First approach The following site config will work fine with sites that use absolute url's everywhere like http://www.huffingtonpost.es/. Youc could try on this config on localhost: http://localhost/asset/http://www.huffingtonpost.es/ <VirtualHost *:80> ServerName localhost LogLevel debug ProxyRequests off RewriteEngine On RewriteRule ^/asset/(.*) $1 [P] ProxyHTMLURLMap $1 /asset/ <Location /asset/> ProxyPassReverse / ProxyHTMLURLMap / /asset/ </Location> </VirtualHost> But as explained in the documentation, if I hit a site using relative url's, I'd like to have these rewritten on the html via mod_proxy_html. So I shoud change the Location block as follows: <Location /asset/> ProxyPassReverse / #Depending on your system use one line or the other #Ubuntu: #SetOutputFilter proxy-html #any other system: ProxyHTMLEnable On ProxyHTMLURLMap / /asset/ </Location> ...which doesn't seem to work. Comments, hints and ideas welcome!

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  • Looking for Ubuntu 10.10 driver for GeForce GT 425M GPU.

    - by Fantomas
    It came with my Sony VAIO® VPCF133FX/H 16.4" Notebook. Ubuntu does suggest an NVIDIA driver for me, but when I install it, I cannot boot back in normally. I have to boot into a failsafe mode, then reset graphics setting to default, and reboot again. Right now I am stuck in 800 x 600 mode, but I would like to do better, and take advantage of my 1GB graphics memory :(. Please let me know if you have questions.

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