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• Sending mail from command line if body not empty

  - by cdecker

  I'd like to write a simple script that alerts me if a log changes. For this I'm using grep to find the lines I'm interested in. Right now it works like this: grep line /var/log/file | mail -s Log [email protected] Problem is that this sends a mail even if no matching lines are found. The mail utility from mailutils seems to have no switch telling it to drop mails that have an empty body. Is there a quick and easy way to do so?

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• Emacs - Disable Some Minibuffer Messages

  - by mellowmaroon

  In Emacs, there are some cases where I would like to prevent messages from appearing in the minibuffer, mainly pertaining to "Beginning/End of buffer" and "Text is read-only". Is there any way I can prevent these messages from appearing in the minibuffer? Also, is there some significant reason I might not want to disable these? At face value, I can just as easily look at the row number and buffer write status on the modeline.

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• vmdk to live cd - VMware vmxnet virtual NIC driver Kernel panic

  - by ronalchn

  Task I am trying to convert a virtual machine to a live CD. Specifically, the virtual machine I am trying to convert is the IOI 2013 Competition Environment. In this task, I am aided by a guide Converting a virtual disk image: VDI or VMDK to an ISO you can distribute. Symptoms However, after getting through all the instructions, the live CD causes a kernel panic on boot on bare metal. In particular, the screen shows: [0.737348] cdrom: Uniform CD-ROM driver Revision: 3.20 [0.737503] sr 3:0:0:0: >Attached scsi CD-ROM sr0 [0.737638] sr 3:0:0:0: >Attached scsi generic sg2 type 5 [0.737771] Freeing unused kernel memory: 756k freed [0.738093] Write protecting the kernel text: 5960k [0.738155] Write protecting the kernel read-only data: 2424k [0.738224] NX-protecting the kernel data: 4280k Loading, please wait... [0.752252] udevd[100]: starting version 175 [0.768708] VMware vmxnet3 virtual NIC driver - version 1.1.29.0-k-NAPI [0.781204] VMware PVSCSI driver - version 1.0.2.0-k [0.789555] VMware vmxnet virtual NIC driver [0.799356] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000200 [0.799356] [0.799472] Pid: 1, comm: init Tainted: G 0 3.5.0-17-generic #28-Ubuntu [0.799549] Call Trace: [0.799603] [<c15bf0ec>] panic+0x81/0x17b [0.799654] [<c104a6a5>] do_exit+0x745/0x7a0 [0.799707] [<c104a9a4>] do_group_exit+0x34/0xa0 [0.799760] [<c104aa28>] sys_exit_group+0x18/0x20 [0.799813] [<c15cff5f>] sysenter_do_call+0x12/0x28 Possible problem I suspect that the problem is the VMware vmxnet virtual NIC driver - however, I do not know how I can uninstall it, and possibly install one for a bare metal machine. If anyone knows which packages needs installing/uninstalling at the .rootfs/ chroot directory stage, please let me know. Details on procedure Do note that after importing the .ova file into Virtualbox, the virtual machine is stored as a .vmdk file already, and not a .vdi file. I would like to point out some results of the procedure followed in case of any questions. This is after extracting the filesystem from the .raw file to the .rootfs/ directory mentioned in the blog. I changed the filesystem table as mentioned in the blog, then looked at the possible "kernel optimized for virtualization". However, I found that linux-image-generic was already installed. Also, when running the command dpkg-query --showformat='${Package}\n' -W 'vmware-tools*' (or dpkg-query --showformat='${Package}\n' -W '*-virtual'), no packages were found. Thus, I did not find any virtualization specific packages. I proceeded to generate the iso following the steps in the blog, and burned it to a DVD.

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• How to allow only specific directories to use htaccess?

  - by DisgruntledGoat

  Currently in apache2.conf I have AllowOverride all set for /var/www which simply allows htaccess for all the sites on the server (which is Ubuntu, 9.04). However, I'd rather only allow overrides in each site root directory and nothing else. In other words, /var/www/site1, /var/www/site2, etc. can have a htaccess, but all other directories including /var/www and /var/www/site1/content cannot. Is there a way to do this without having to write a rule for every site on the server?

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• Windows 7 only IE working other browsers not

  - by user177259

  I have strange behavior with browsers on my PC (but it work well before yesteday) My Chrome, FF (ERROR: Error 101 (net::ERR_CONNECTION_RESET): Unknown Error ) write me that can't connect to Internet I need to check Proxy, Firewall etc. I did it and all settings are fine, on other PC in this area all working with the same settings. Only explorer can work in internet. How to solve it ? Thanks I have tried chrome://net-internals/#tests in grope and test gooogle.com but all test failed with 101 error

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• Using ssd intensively. Should we worry?

  - by vvavepacket

  I'm currently using conventional HDDs like the 5200 rpms, browsing a lot, my folder and files are scattered, torrenting always and I'm not fond of optimization like disabling cache, cleaning temp Files , etc. My question is, given the above conditions (no disable of cache, seeding always in torrent, downloading torrent) is it safe to use SSD? I'm pretty worried about cycles but I read an article wherein it says its safe since it will usually wear out for 10 years given that you always write heavily and continuously. Thanks

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• Square character

  - by John

  I have to write x/100000 with square character: x*10-5 ,but the '-5' should be above 10 so it is known that it is x/10/10/10/10/10. How do I do that?

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• Why don't cfn-init logs get sent by rsyslog?

  - by Jon M

  I just signed up for Papertrail to aggregate logs from some AWS instances I'm setting up with CloudFormation::Init. I've followed the instructions and added *.* @logs.papertrailapp.com to the end of '/etc/rsyslog.conf'. Some logs are showing up on Papertrail, but notably the contents of '/var/log/cfn-init.log' never get there, and those are the ones I'm interested in right now. Have I set up rsyslog incorrectly? Or do the CloudFormation::Init scripts just not use syslog to write log information?

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• How does MobilePhone.app connects to the baseband?

  - by Knodel

  I'm trying to write an app for jailbroken phones which will be an analogue for MobilePhone.app. But I don't know the way MobilePhone.app connects to the baseband (or the protocol that is used) and which commands does the baseband "understand". Can you help me? Thanks in advance!

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• using git for media libraries

  - by mpapis

  Rationale: I want to manage libraries of media files (music, images) using git, there is git-annex but it requires haskel platform - but they do not play together well (also it's quite to big dependency for me). Question: Is there any other plugin with this functionality, or possibly would it be possible to write such plugin (resources?). Similar questions: Self-hosted, cross-platform repository for large files Using Git to Manage An iTunes Library?

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• Disable autocompletion with contact names on Android keyboard

  - by juanjux

  I have a huge contact list on my phone, so every time I start to write some word on a text field contact names will pop as first options for the autocompletion, which is almost never what I want. Is there some way to disable the autocompletion with contact names without disabling it for dictionary words?

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• How can I run a PowerShell function remotely?

  - by Aimar

  Using powershell, I plan to run many functions on a remote host to gather information. Here is an example to retrieve the content of file remotely just by running a function called getcontentfile with the parameter as the name of the remote host: function getcontentfile { [CmdletBinding()] param($hostname) $info = Get-Content "C:\fileinfo.xml" write-host $info } This function should return information about the remote host to the local instance of PowerShell. How can I modify this script to do that?

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• Open Source Excel training documentations?

  - by William

  I'm a trainer, basically. I'd like to find some sort of Excel-based training that's under the creative commons, or another awesome license. I want to use it to train others, and make it better. If this doesn't exist, I may have to write it. Because it should.

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• Program for getting the cursor's x,y coordinates?

  - by Click Upvote

  Is there a program which lets you easily get the x,y coordinates for your cursor? Basically, I move my cursor to somewhere on my screen, it shows me the x,y coordinates and has an option to copy them to the clipboard or export them somehow. I can already do this if I take a screenshot and open it in MS Paint, then as I move the mouse cursor over the screenshot it shows the coordinates in the status bar, however I have to manually write them down, hence its not convenient.

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• writing LTO-3 tapes with a LTO-4 drive.

  - by wazoox

  Apparently LTO-4 drives can both read and write LTO-3 tapes. Are these tapes fully compatible with LTO-3 drives? I'm interested in real life experience more than theoretical vendor-touted compatibility :)

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• unix screen logging change filename to window name

  - by zack

  I know its possible to change the name of the logfile with "set filename" I'd like to have screen write its log files to the name of the window. how can I accomplish this ?

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• openssh sftp chroot

  - by Zulakis

  I chrooted a user to the directory /var/www/upload using ChrootDirectory /var/www/upload in my etc/ssh/sshd_config. The permissions of all the files in var/www/upload is 755 and owner is root:upload_user. However, I still cannot modify the files. (Getting a permission denied error.) Is it possible if I create a subdirectory with ownership upload_user:upload_user. Is it, by any means, possible to allow my chrooted user to write to his / directory?

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• Nginx: How can I redirect old content to the homepage?

  - by Delameko

  All my old content (which no longer exists) is in the path mysite.com/2007/* How can I write a redirect in nginx to redirect any requests to 2007 back to the homepage? At the moment they just display a 404. Thanks

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• Win 7 64-bit - looking for command line interface for setting Index properties for many files

  - by Sherryl

  I'm looking for a way to set a group of File Types to "Index Properties and File Contents" (Control Panel, Indexing Options, Advanced Options, File Types). Basically I'd like to write a batch file that switches that setting for a large group of file types and be able to share it with my entire team. Clicking in the UI is time consuming for everyone. This is a great solution for bringing up the GUI, but I'd like to create a batch file What is the command line for Indexing Options?

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• What is the best SSD deal available right now ?

  - by paulgreg

  What is the best 2.5" SSD deal (best performance for a reasonable price and a good size) available right now ? The question is in 'community wiki' mode, so feel free to post the "winner" below : And the winner is... : currently the OCZ Vertex. Prices: * 30GB - $149.99 * 60GB - $239.99 * 120GB - $389.00 * 250GB - $829.00 Speed: * Read: up to 270MBps * Write: up to 210MBps

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• How to auto dial 9+Number on Cisco 7941 redial?

  - by NotDan

  Is it possible to set up a Cisco 7941 phone to dial 9 before the redial number? When I view missed calls, and try to redial one of the numbers, it always fails because it doesn't dial 9 first. I have to write the number down and then manually dial the 9 and then the number.

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• Problem running Chrome from Start->Run

  - by ripper234

  When I hit Start-Run and type "Chrome", nothing happens (no new "chrome.exe" process is launched, not error, nothing). When I hit Start (without "Run"), type Chrome and run it, it works. How do I find what shortcut is run via Start-Run ? When I open a command prompt and write "Chrome.exe", it doesn't recognize it as an executable program.

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• Per Sender Traffic Limit on Cisco 6500

  - by user71557

  Hi All, I have a 6509 with ~1000 user machines in different vlans, I want to allow 10 server machines to send as much as they can/want but to limit all client machines from all subnets to have a sedning rate limit of 1mbps with no receiving limitation. It is worth noting that all my ip addresses are assigned using a DCHP server and there are 1000 of them so I can not write ACLs for every address seperately. Can any one provide some kind of help please?

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• Problem to connect to shared printer

  - by PeterMmm

  Maybe someone knows a reason for following behaviour: I'm going to add a printer thru the normal printer wizard. At the step where to connect to a shared printer i select browse and take a printer from the printers attached to another host. That won't work. But if i write the complete address (\\host\printer) the printer get attached. Any idea why i cannot select from the list ?

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• Skype silent chat message

  - by D Moberg

  Reason: I have a contact that I know is busy, but still want notifications so he is in "online"-mode and not DND-mode. I want to write "OK" to him, without having to disturb him (having him to open and look in skype to see if it was something important, which it is not). Question: Is there any way to send a message that won't trigger a notification at the receiver's end? Something like a "silent message".

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