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• Ubuntu Terminal launch applications on different workspace

  - by drahcir

  I am trying to write a group of bashscripts to launch a set of applications on different workspaces. Reason being so that I can for example set up a script that launches all my dev related applications on the workspaces I usually put them on. I am looking for a command like ws -2 foo Which would launch the foo application on workspace 2 I…

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• Passive Scan using wpa_supplicant-0.7.3

  - by Ashish Yadav

  I am using wpa_supplicant-0.7.3 and WL12xx TI Driver(WiFi) . Looking into both code,I seen that both support passive scan . Also, nl80211 driver is used (not wext). I am not able to find any command for passive scan in wpa_cli . With iw , for passive scan we can use : iw dev wlan0 scan passive Similar I want to do passive scan using …

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• EC2 instance suddenly refusing SSH connections and won't respond to ping

  - by Chris

  My instance was running fine and this morning I was able to access a Ruby on Rails app hosted on it. An hour later I suddenly wasn't able to access my site, my SSH connection attempts were refused and the server wasn't even responding to ping. I didn't change anything on my system during that hour and reboots aren't fixing it. I've never had…

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• How to install grub into an .img file?

  - by Francesco Turco

  I did the following: created an empty .img file with dd associated it to /dev/loop0 with losetup created a partition in it with fdisk formatted such partition with mke2fs copied a custom GNU/Linux system into that partition Now I'd like to make the .img file bootable by installing grub into its MBR and /boot directory. My goal is to load…

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• Customer Passenger Error Pages

  - by Adam

  How do you replace the Passenger Application failed to load error messages. They are lovely, but I'd rather not display them when we move our application to production. It'd be better to just show them on the dev box and maintenance page on the live site. For clarification, this is the call stack page passenger displays when your rails app…

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• Validating GPG key signature authenticity

  - by Dor

  I'm trying to validate the integrity of my httpd-2.2.17.tar.gz image. I followed the steps written in the following pages: http://httpd.apache.org/download.cgi#verify http://httpd.apache.org/dev/verification.html#Validating But I got: WARNING: This key is not certified with a trusted signature! gpg: There is no indication that…

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• sfdisk restore partition table if two hardisk have different sizes

  - by MA1

  What will happen if i try to restore the partition table of a larger hard disk to smaller hard disk, for example: partition table of 250GB hard disk to a 80GB hard disk using sfdisk like this. sfdisk /dev/sda < PartitionTable250.txt Will sfdisk detect it? I think there will be no problem if the partition table of a smaller hard disk…

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• Cannot Boot - Ubuntu 9.10

  - by c00lryguy

  I installed Ubuntu 9.10 from my laptop onto a HDD in an external harddrive enclosure. I could not connect online so I plugged it into another computer and updated the system. Now when I plugged it back into my laptop, I cannot boot. It says "ALERT! /dev/sdd1 does not exist. Dropping to shell!" and has a shell that says (initramfs)

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• Enable colors in Ubuntu Server linux terminal.

  - by b3ng0

  One of my dev machines is an Ubuntu server installation with no X/gui/etc. It just boots to terminal. Can I enable 256 colors here? How?

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• Read raw HD partition in Linux at a particular offset

  - by Evgeny

  I'm trying to recover some files deleted from a Linux ext3 partition. I've grepped the raw partition device (/dev/sda1) using grep -b and it gave me an offset. What's the easiest way for me to read a chunk of data from that block device starting from the offset returned by grep?

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• sshfs mount won't start from /etc/rc.local

  - by Alex Flo

  I have the following commands in /etc/rc.local chmod 666 /dev/fuse chmod +x /usr/bin/fusermount /bin/su someuser -c "/usr/bin/sshfs someuser@someserver:/usr/local/storage /usr/local/storage_remote -o nonempty -o reconnect" If I run them from command line, as root, they work. If I reboot the server they won't run from /etc/rc.local.…

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• Mount "locked" SD card as read-write in GNU/Linux

  - by Vi

  My Canon PowerShot A470 + CHDK can write to SD-cards that are "locked" (the lock switch is used to make the card bootable), but GNU/Linux `/dev/mmcblk1': Read-only file system (I'm using "Texas Instrument 5-in-1 Multimedia Card Reader") So I have to switch that switch on and off again and again. ("unlocked" to write to the card in…

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• Migrating VPC images to Hyper-V

  - by user12015

  I have a couple of development Virtual PC images; now I installed Windows Server 2008 + Hyper-V on my main dev laptop and need to migrate those images to Hyper-V. Google only brings steps for some older version of Hyper-V - I dont even see the wizard steps they are talking about. Any help would be highly appreciated! Thanks! -…

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• Is it OK to run perfmon on production servers? And why?

  - by Bill Paetzke

  Or should perfmon be limited to a Dev/QA server with load tests that simulate production activity? I'd like to run perfmon for a two days (like Sql Server master Brent Ozar suggests) to get an overall feel of my web app's database performance.

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• Why apcupsd won't see the UPS connected to the USB posrt on FreeBSD 8.0 amd64

  - by Max Kosyakov

  Hello, Recently I installed an apcusbd on a FreeBSD 8.0 amd64 box via ports system. It installed perfectly but it won't run. Here what is says in the log: FATAL ERROR in generic-usb.c at line 636 Cannot find UPS device It appeared that HID driver picked the /dev/ugen4.2 which could cause the apcusb being unable to find the…

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• Subversion causes network problems

  - by richard

  I often use tortoisesvn to checkout or update a working copy on a development server. Whenever I do this, it seems to slow down the network and other users complain that browsing websites and accessing files on the dev server is slow. Is this a common bug in Subversion or has anyone else has come across similar problems?

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• Centos 5.5 [Read-only file system] issue after rebooting

  - by canu johann

  I have a virtual server under centos 5.5 (hosted by a japanese company called sakura ) Since yesterday, connection through ssh couldn't be established. I've contacted support center who told me to restart VS from the control panel. After restarting, I got the message below Connected to domain wwwxxxxxx.sakura.ne.jp …

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• Spoof Mac Address from ip command.

  - by GuyNoir

  I'm trying to spoof my Mac Address on a modified version of linux (Android). The main problem is that because it has been stripped down, the ifconfig command has been stripped out, and I only can use the 'ip' busybox command. I've been trying to use ip link set address xx:xx:xx:xx:xx:xx dev tiwlan0 but I get the error, ip:…

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• Ubuntu 10.04 (LTS) DomU on Debian Wheezy Dom0 Xen 4

  - by mdjp

  I have been forced to move from a Centos Dom0 xen 3 Centos + Ubuntu Lucid DomUs To Debian Wheezy Dom0 Xen 4 Ubuntu Lucid DomUs However although I can create new DomUs on wheezy I cannot get them to boot. pygrub returns Error: Bootloader didn't return any data I have ensured that the disks are the correct way…

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• One of the nodes of a 4 node cluster is not allowing me to access GFS

  - by Nishant

  [root@host3 ~]# cd /var/opt/new/new1/global -bash: cd: /var/opt/new/new1/global: Input/output error output of the df : /dev/mapper/vgglobal-lvol3 11524928 2560092 8964836 23% /var/opt/new/new1/global One of the nodes , doesn't allow me to CD to this GFS file system !!! I cant understand whats…

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• fsarchiver utility in order to make restore

  - by jennifer

  hi all I use the fsarchiver in order to make restore as the following link: http://www.icewalkers.com/Linux/Software/535640/fsarchiver.html command: fsarchiver restfs /tmp/backup/c0d0p2.fsa id=0,dest=/dev/cciss/c0d0p2 its fail on: [errno=22, Invalid argument]:…

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• how to set the font with mailx?

  - by Bob

  Solaris Korn Shell I am writing sql reports to an oracle database, spooling them to a file and emailing them with mailx. I use the syntax below. The reports do not format properly, unless I use the Courier New font. How do I set this with mailx? mailx -s "MY REPORT, date +'%D %r…

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• How to mount a HFS partition in Ubuntu as Read/Write?

  - by GiH

  I plugged in my external harddrive (which was formatted on my Mac into HFS+ journaled) to my Ubuntu desktop 9.04 64bit. I am not able to get the drive to mount with write capability, how do I do that? Right now all I'm getting is read access, I tried sudo mount -t hfsplus…

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• Slow ASP.NET site using IIS6

  - by lars

  Hi, I have two servers, one virtual and one physical, running the exact same site on both machines. Both machines are running on ~ 2% CPU load and very much RAM available for usage. Somehow the site, with cache turned off ofcourse, loads in ~ 500ms on the virtual machine…

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• Make a Phone ring from BASH through a HUAWEI e220

  - by microspino

  Hello, I have a Debian Linux system with a HUAWEI e220 on /dev/ttyUSB0. I'd like to make It ring a generic GSM phone for just one time. I'm doing this because I'd like to build an embedded system that fires some special behavior by a single GSM phone ring. How can I do It?…

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