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  • Is there any way to use the xscreensaver gltext to monitor system information?

    - by Shane
    I am trying to get the X screensaver gltext to monitor my system temp and maybe some other stats. Writing a script that puts together the stats periodically is no problem, but the main thing I'm running into is that gltext doesn't refresh - whatever text I feed it stays there. So, for example, I run this command: $ /usr/lib/xscreensaver/gltext -text "`cat /proc/acpi/thermal_zone/THRM/temperature`" and get a gltext window showing: temperature: 60 C I can manipulate it and format it as necessary, but as my CPU heats up and cools down, it doesn't update, even if I include time variables that do. I have a script that feeds gltext the time as the first line and the temp as the second line - and although the time updates continuously as the time changes, the temperature value remains the same as whenever the screensaver started. Is it possible to do what I want, which is change the text every 60 seconds if the temperature changes?

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  • Intentionally hogging Wi-Fi bandwidth?

    - by endolith
    I've noticed that Wi-Fi signals are interfering with a product I'm developing, and I'd like to generate as much Wi-Fi noise as possible for testing purposes. Is there any better solution than, say, dragging large files from one computer to another? Ideally I'd like one computer to just generate a stream of data ex nihilo and stream it to the other computer where it will just be obliterated, so it hogs bandwidth without reading or writing the hard drives. I'm in Windows, though, so there's no /dev/random or /dev/null. And it would be cool if I could vary the bandwidth, too, but not necessary.

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  • how to limit disk space per user in a PHP web application & CentOS

    - by solid
    we have a web application written in PHP and we want all our users to be able to upload images for e.g. 50MB. We will create a directory structure so that every user has its own folder like app/user1/images app/user2/images ... Now everytime a user uploads an image, we need to check if this is still allowed or not but we don't want 1000 users to continously scan our hard drive counting file sizes in their directory. So writing a script that counts all file sizes in a user directory is not an option I guess? Is there an easier way to calculate used up space per user and limit our app accordingly?

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  • Will disk cloning resolve bad stripes on RAID?

    - by user13323
    Hi. We have a logical RAID1 drive in bad stripes state, which kept that status even after replacement and rebuilding of both drives, and gives errors in Windows logs about failure of writing to disk. IBM support suggests erasing and re-creating the RAID, then re-installing the Windows. The resulting down-time unacceptible for us, so we want to clone the RAID (via Acronis True Image), erase and re-create the RAID, then dump the cloned data back. Following IBM logic where RAID erasing and re-creation resets the whole RAID meta-data, this should clear the bad-stripes status, and start from a blank page. Question is if such strategy is possible, and will produce the desired effect? Any idea is appreciated - thanks in advance!

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  • NTFS disk mounted as fuseblk in ubuntu 12.10 is very slow and a lot of errors when rsync. Is that not a rare thing?

    - by Pablo Marin-Garcia
    I am having problems with a NTFS disk mounted as a fuseblk in my ubuntu 12.10 through external usb3. When I did a 1.1TB backup with rsync the speed was 1-2MB/s (wiht a ext4 disk speed was 70 MB/s before and after trying the NTFS disk). Also after one hour errors started to appear: rsync: write failed on "xxx": No such file or directory recv_files: "yyy" is a directory #but this file is a FILE not a dir ??!! .... As this is the first time I have mounted the NTFS in linux for heavy usage (the data would be used in windows afterwards), I would like to know if this kind of thinks are common o was only that something became unstable in my system and a simply restart would probably have solved it. This leads me to the these questions: Can I trust fuse for manage NTFS disks? Or is a problem of the NTFS tools in linux not yet totally stables for writing? Do people is still suffering from low performance with fuse-NTFS vs ext4 (in the past I have read about people complaining about this)?

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  • Monitoring and terminating a hanged process in Linux

    - by Yoav
    Hi, I'm writing a script that runs many simultaneous processes that run the "dig" command. Once in a while (relatively rare, but happens in every run since I run dig many times) the dig command hangs with 0% CPU. Therefore, my script never terminates. I've created a monitor process for each dig command I run, which terminates it after a while, but I was wondering if there isn't a simpler and more efficient way to run a process with a pre-determined "expiration date", i.e. if the process runs more then X seconds it gets a signal that terminates it. Thanks!

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  • FoxPro 2.6 DOS on Windows 7 64-bit

    - by Rolando
    I support a company that has a very old, mission critical, FoxPro for DOS 2.6 (FPD) application. For variuos reasons the company didn't adapt/migrate their app, which, ironically, has been running even better under Windows XP (and 32-bit Win7) because the OS allowed new features like more reliable networking, distributed printing, email integration. Unfortunately for this company, most new machines now come with a 64-bit version of Windows 7, which is incompatible with their FPD app. I know this time the writing is on the wall: the only long-term solution is to migrate their app. But I wonder if anyone can suggest a temporary alternative path, which doesn't involve either: a) downgrade 64-bit Windows to 32-bit, or b) run the app on a virtualized 32-bit XP Thanks! PS: Happy New Year!!!

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  • FoxPro 2.6 DOS on Windows 7 64-bit

    - by Rolando
    I support a company that has a very old, mission critical, FoxPro for DOS 2.6 (FPD) application. For variuos reasons the company didn't adapt/migrate their app, which, ironically, has been running even better under Windows XP (and 32-bit Win7) because the OS allowed new features like more reliable networking, distributed printing, email integration. Unfortunately for this company, most new machines now come with a 64-bit version of Windows 7, which is incompatible with their FPD app. I know this time the writing is on the wall: the only long-term solution is to migrate their app. But I wonder if anyone can suggest a temporary alternative path, which doesn't involve either: a) downgrade 64-bit Windows to 32-bit, or b) run the app on a virtualized 32-bit XP Thanks! PS: Happy New Year!!!

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  • Format as NTFS without Journal

    - by palswim
    I have a flash drive that I'd like to format for use in Windows. I would like support for symbolic links, so I can't use FAT/FAT32/exFAT. I would prefer to use the ext4 filesystem and disable journaling, with the Ext2Fsd filesystem driver, but have (so far) found that I can't make soft links across filesystems that Windows will read, Ext2Fsd has an annoying bug about always mounting partitions as read-only and has problems resuming from sleep, and some programs have problems writing to the partition even after manually configuring Ext2Fsd to allow writes. So, I would like to use NTFS for the flash drive, but disable the journaling feature (causes extra writes), if possible. How can I do this?

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  • Can I put /tmp and /var/log in a ramdisk on OS X?

    - by kbyrd
    For non-critical Linux systems, I often move things /tmp and /var/log to tmpfs to save on some disk writing. I've been doing this for a year or so and if I ever need the logs across reboots, I just comment out a line in /etc/fstab and then start debugging. In any case, I would like to do the same thing on OS X. I've seen posts on creating a ramdisk for OS X, but I'm looking for a more permanent solution. I always want /tmp and /var/log mounted in a ramdisk, with the ability to turn that off with a bit of cmdline editing in vi if I have to.

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  • write-through RAM disk, or massive caching of file system?

    - by Will
    I have a program that is very heavily hitting the file system, reading and writing randomly to a set of working files. The files total several gigabytes in size, but I can spare the RAM to keep them all mostly in memory. The machines this program runs on are typically Ubuntu Linux boxes. Is there a way to configure the file system to have a very very large cache, and even to cache writes so they hit the disk later? I understand the issues with power loss or such, and am prepared to accept that. Crashing aside, in normal operation the writes should eventually reach the disk! Or is there a way to create a RAM disk that writes-through to real disk?

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  • [Ubuntu] How can i log-in to Ubuntu using USB-serial console (rs232) ?

    - by marc
    Welcome, How can enable remote terminal login into Ubuntu 9.10 using usb-serial terminal ? I got created device ttyUSB0 and i want allow to log-in using hyper-terminal. I found some resources but they are related to real! hardware rs232 ports, i can't find any information about USB converter. Right now i have established connection between that usb-serial port and my laptop (i can send text writing to port cp sometext.txt /dev/ttyUSB0 and read using hyperterminal). Any idea ? Regards

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  • bash : "set -e" and check if a user exists make script exit

    - by Dahmad Boutfounast
    i am writing a script to install a program with bash, i want to exit on error so i added "set -e" in the beginning of my script. the problem is that i have to check if a user exists inside of my script, to do this i am using "grep "^${USER}:" /etc/passwd", if the user exists, the script runs normally, but if the user doesn't exist, this command exists, and i don't want to exit on this case (i have to create the user and continue my installation). so what's the solution to make my script continue running ?? i tried to redirect the output of "grep" to a variable, but i still have the same problem :( thanks.

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  • Why is DAVExplorer not connecting?

    - by C.W.Holeman II
    DAVExplorer is not connecting. Connecting to a WebDAV Server states: Once you have entered a location URL, and (if necessary) your login name and password, DAV Explorer will connect to the remote WebDAV server, and request a listing of the resources there. A hierarchical view of the sub-collections will be displayed Invoke Apache Jackrabbit $ java -jar jackrabbit-standalone-2.0.0.jar --port 8200 Welcome to Apache Jackrabbit! ------------------------------- Using repository directory jackrabbit Writing log messages to jackrabbit/log Starting the server... Apache Jackrabbit is now running at http://localhost:8200/ Use DAVExplorer $ java -jar DAVExplorer.jar Then connect to localhost:8200/repository/default/ which pops up: Login ===== Login name: [admin] Password: [admin] <OK> The pop up closes then nothing changes. Using cadaver confirms Jackrabbit is working: $ cadaver http://localhost:8200/repository/default/ Authentication required for Jackrabbit Webdav Server on server `localhost': Username: admin Password: dav:/repository/default/> ls Listing collection `/repository/default/': succeeded. Coll: com 0 Mar 13 11:07 Coll: it 0 Mar 13 11:07 Coll: net 0 Mar 13 11:07 Coll: org 0 Mar 13 11:07 Coll: za 0 Mar 13 11:07

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  • Controlling an amplifier power supply from Squeezebox/SqueezeCenter

    - by teabot
    I have a Squeezebox that is connected to an amplifier. I'd like the amplifier to switch on/off whenever the Squeezebox is powered on/off. I don't mind writing some plugin code to SqueezeCenter to do this but in hardware terms I am looking for off-the-shelf components. I imagine that I need some kind of Ethernet controlled power outlet. I have looked at X10 (I can't bring myself to link to their terrible site), but their product range seems extremely confused and it looks as though I'd have to use both RF and comms-over-mains to implement a computer controlled socket. Does anyone have any alternative suggestions? Note: Any components should be available and certified for use in the UK.

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  • Setting the Timezone with an automated script

    - by Tom
    I'm writing scripts to automate setting up new slicehost installations. In a perfect world, after I started the script, it would just run, with no attention from me. I have succeeded, with one exception. How do I set the timezone, in a permanent (survive reboot) and sane (adjust for standard and daylight savings time, so no just forcing the date) ... manner that doesn't require input from me? Currently, I'm using dpkg-reconfigure tzdata This doesn't seem to have any way to force parameters into it. It demands user input. EDIT: I'm editing here, rather than commenting, since comments don't seem to allow code blocks. Here's the actual code I ended up with, based on Rudedog's comment below. I also noticed that this doesn't update /etc/timezone. I'm not certain who uses that, but in case anybody does, I'm setting that too. TIMEZONE="America/Los_Angeles" echo $TIMEZONE > /etc/timezone cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime # This sets the time

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  • Need to get a file written to a floppy.

    - by dboarman-FissureStudios
    I asked this question over on SO. I have tried dd if=kernel.sys of=/dev/fd0 bs=512 seek=1 to get this file to write to the floppy. It is a kernel shell that must be written to the sector immediately following the bootsector of a disk to boot the PC. No matter what I've tried, for some reason, kernel.sys is not writing to the floppy. I know the bootstrap loader is being written and executed. However, it cannot find the kernel to load the shell. Any ideas on what I am doing wrong? I mean, really, how is it so difficult to get this file written to a floppy? OpenSUSE 11.2

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  • Determining Serial Driver Supported Baud Rates

    - by Jim Fell
    Hello. How can I determine the baud rates supported by my serial driver? My driver details (from the Device Manager) follow, but they do not seem very helpful. I am writing an application that is crashing because I am apparently attempting to to set COM1 to an unsupported baud rate, so I need to know which baud rates the driver does support. Any suggestions would be appreciated. Thanks. Driver files: C:\Windows\system32\drivers\serenum.sys C:\Windows\system32\drivers\serial.sys Provider: Microsoft Corporation File Version: 5.1.2600.5512 (xpsp.080413-2108)

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  • What is this dm-0 device?

    - by Jeff Shattock
    While poking around trying to figure out why a Linux - Linux file transfer is running slower than I think it should, I stumbled across something I'm not familiar with. /dev/dm-0 seems to be my bottleneck, but I have no idea what it is. On my destination server, the iostat command shows a device at the bottom, /dev/dm-0, as being 100% utilized. This server has 6 disks in a mdadm raid5 set, with LVM running on top of it. Each of the underlying disks are sitting around 50% util. The transfer is writing to a logical volume located on this raidset. What is this /dev/dm-0 thing? Once I know what it is, maybe I can find how to increase its speed, or at least understand why its the speed that it is.

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  • Why does iis produce 500 response on all requests?

    - by HMR
    In IIS 7.5 on Windows webserver 2008 I get a 500 response on any request. Checking in firebug if I'm being forwarded but the request is made and no forwarding, just get 500 response with a page that looks like Symfony response page. Disabled all url re writes and requested index.html (still get 500) checked error pages under featured settings and detailed errors is checked. Checked the php error log and no writes have been made for several days. I think someone has fiddled with the IIS server settings and got it to return 500 for any request (even locally) but I'm not able to find what it is. [UPDATE] While I was writing this and listing things I've tried I tried selecting detailed error messages at the root node, not the site node. Looks like some idiot changed file permissions so that IIS can no longer read the config file.

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  • Where can I learn various hacking techniques on the web?

    - by Carson Myers
    I would like to try my hand at hacking -- that is, exploiting various website vulnerabilities. Not for any illegal purpose mind you, but so I can have a better understanding and appreciation of these exploits while writing my own web software. I seem to recall that there was a community that hosted a bunch of demo websites, and you had to find and exploit certain vulnerabilities with each one. I can't remember what it is called but this is the sort of thing I am looking for -- I have read a tonne of little XSS and CSRF examples but have yet to find a real-life hands-on example of one. Does anyone know of such a place, where I can be given an example page and look for security holes? I would really rather not try this with actual websites, I don't want to break any laws.

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  • What WYSIWYG software can I use to create a web page?

    - by Roman
    I always made web pages by writing HTML code but now I would like to try to use some WYSIWYG approach. Can anybody recommend me a program which I can use for that? I mean a program in which you can move buttons, tables, pictures by mouse. You can change size and shape by mouse. You can use nice templates for "block of text", buttons, background and so on. I am using Windows 7. May be I already have something pre-installed?

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  • Tool to check if XML is valid in my VS2012 comments

    - by davidjr
    I am writing the documentation for our companies software developed with vs2012. I need to add xml examples to the summary of each class, due to xml instantiation of objects. We are using sandcastle to create the documentation (company choice), and I want to be able to review my xml comments without building the help file every time. Is there an application that anyone would recommend where I can view how the xml renders before I build the help file? Here is my example: /// <summary> /// Performs DFT on a data array, writes output in a CSV file. /// </summary> /// <example> /// <para>XML declaration</para> /// <code lang="xml" xml:space="preserve"> /// %lt;DataProvider name="DftDP" description="Computes DFT" etc... I want to check the XML to make sure it is valid, maybe by copy and pasting it into a tool of some sort?

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  • Converting date format in formulas in Excel

    - by Casebash
    I have a column of dates in the following format ddd mmm dd hh m:s "EST" yyyy. In another cell in another sheet, I wish to have the dates in the format dd/m/y. How can I do this? I already tried the DATEVALUE function. Seeing as the positions are fixed, I started using the RIGHT and MID functions to extract components to put into the DATE function. Unfortunately, I don't know of a way of converting the three letter string to a month without writing a huge if block. UPDATE: I managed to convert the string using MONTH(1&THREE_LETTER_DATE). I am still curious if there is a better solution though

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  • Dump output from REPL

    - by Ankit Soni
    I'm writing SML programs, and I'd like a way to quickly see the output from running a program in the REPL without actually running the REPL (to quickly see if a program has syntax errors - I plan to use this as a make program for .sml files in vim to view the output inside vim).. Currently, I have this: sml file.sml | echo -e "\004" So it runs the program, and then echoes Ctrl-D to exit the REPL. The problem is that its too quick to send the Ctrl-D key, so there is no output. I tried this too: sml file.sml | sleep 2 ; echo -e "\004" But that isn't doing it either. Any ideas on how I can get a dump of the output from the REPL?

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