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• Logging a Daemon's Output with Upstart

  - by Alex Reisner

  I have a custom daemon that is managed by upstart on my Ubuntu server. It works perfectly except that I need to capture (log) the daemon's output. The official stanzas page says that I can use console logged to do this, but what file does it log to? I've also read that console logged is no longer a valid stanza. I'm currently using 0.3.9 (Hardy) but will upgrade to 0.6.x (Lucid) in a few months. If console logged in fact won't work with later versions, what do I use instead?

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• Windows with putty via USB serial cable to Linux serial port - output ok, input isn't

  - by Aharon Robbins

  I am trying to get two way serial communications going between a Windows XP system and a Linux system (RHEL 5). I have /sbin/agetty -L 9600 ttyS0 in /etc/inittab. I am using a generic USB to serial adaptor on Windows (Unitek) and a null modem cable. I have putty configured for 9600 baud, 8 bits, no parity, one stop bit, no flow control. I get the login prompt from agetty in the putty window but input does not work; I see weird characters in the putty screen. I can echo output into the device from windows and see it, but cat < /dev/ttyS0 just prints out weird characters from what I type. Any and all suggestions will be welcome. Thanks!

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• Improper output in SSH session on OSX using FreeSSHd on Windows with cygwin bash/sh shell

  - by Tyler Clendenin

  I am testing out running an SSH server on a local Windows VM. I have installed FreeSSHd and set the command shell to "c:\cygwin\bin\sh --login -i" (bash as well) with "Use new console engine" unchecked. (When it was enabled no output would show through the ssh connection anyway) The shell seems to work, but when connecting from my OS-X terminal using ssh all of the shell results comes out ill formatted. $ ls -al total 17 drwxr-xr-x+ 1 SYSTEM Administrators 4096 Feb 2 01:00 . drwxrwxrwt+ 1 Administrator Administrators 0 Feb 2 01:01 .. -rw------- 1 SYSTEM Administrators 128 Feb 2 01:30 .bash_history -rwxr-xr-x 1 SYSTEM Administrators 1150 Feb 2 00:55 .bash_profile -rwxr-xr-x 1 SYSTEM Administrators 3754 Feb 2 00:55 .bashrc -rwxr-xr-x 1 SYSTEM Administrators 1461 Feb 2 00:55 .inputrc Any ideas on why this is happening, how I can fix this?

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• How to monitor current output/receive queue length in Linux

  - by IZhen

  I want to check the capacity and performance of my network. Besides checking the txkB/s and rxkB/s via Sar, I'd also like to see the average queue length of the network interface(so that the average queueing time in the interface can be calculated). It seems that netstat can give a per socket queue length, is it possible to get a per interface statics(a bit like Network Interface\Output Queue Length in Windows)? A related and kind of reverse questions is How do I view the TCP Send and Receive Queue sizes on Windows? Thanks

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• Windows 7 does not recognise second display output

  - by gilles27

  I've got a PC with dual BenQ G2222HDL monitors and an ATI Radeon HD 4650 video card. I've been running both monitors at 1920x1080 for some months now but last week the second monitor switched to a lower resolution and won't let me go back to 1920x1080. If I right click the Desktop and choose Screen Resolution from the menu, I get two items in the Display: drop down list BenQ G2222HDL D-SUB Display device on: VGA In the past 2 was always the same as 1. If I click Detect a third item appears Available display output on: ATI Radeon HD 4650 but if I use the Multiple displays: drop down list to use it says "No display detected" and then lets me choose from either "Connect anyway on S-Video" or "Connect anyway on Component", neither of which help. It seems like Windows 7 recognises the card is dual-head, and knows I have got two monitors, but can't link it all together. I have checked and all my drivers are up-to-date. Does anyone have any suggestions as to how I can get the second monitor working properly again?

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• How to prevent truncated output lines in Console2?

  - by evan

  I just started using Console2 and can't seem to find a way to scroll horizontally when command output is wider than the current size of the window and when I try to resize the window the truncated information is just lost. Is there a way to add horizontal scrolling or to fix the resizing issue? If not, are there programs similar to Console2 that do not have this problem? Thanks! EDIT: Actually, my bad, no information is getting lost, it's just not resizing it properly. EDIT: Turns out that if you resize Console2 to make it smaller and cutoff text you can't resize it and get it back?? Is that a bug?

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• Change audio output depending on which one is on

  - by pkrish

  I have a PC that is hooked up to my HDTV (via a long hdmi cable) and to a monitor, which is in another room. I have speakers directly plugged to the PC audio out. The PC is next to the monitor and speakers. I am not sure but I think Windows can play sound on only 1 audio device at a time. And I can only set 1 device as the default output. I can get sound on the TV or speaker depending on which device I set to default. But I would have to do this every time I switch between using my TV or my monitor! Is there some way to configure such that sound plays through the TV if the TV is on, else it plays in the speakers? If this is not possible, then the next best alternative would be to get the sound to play on both the devices at the same time. Thanks!

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• Nvidia Ion HDMI output problems with Acer Revo

  - by Techfeeler

  I bought an Acer Revo. First I connected it to my Sony TV via HDMI output. For a few days it worked very well. Then one day when switching on the computer, it boots and the TV screen turns black and the TV displays the error message "no input signal". I connected the Revo to a Samsung LED TV, and it did the same. What do you guys think the problem is? How do I tackle this issue? Any help is deeply appreciated.

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• Redirecting X output

  - by Adam Matan

  Hi, I have a small program that checks some elements of a web service. The program shows graphics output and displays commmand-line results as well. I have been trying to automate this program to run periodically on a server in my office. Problem is, It only works when I have X enabled - either directly on the server, or via ssh -X. Following Google, I have tried Xvfb, which gave me quite cryptic error message: Xvfb :1 -screen 0 1600x1200x32 Fatal server error: Server is already active for display 1 If this server is no longer running, remove /tmp/.X1-lock and start again. Any ideas how to run it? I'm actually looking for the X equivalent of &>/dev/null... Thanks in advance, Adam

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• Improper output in SSH session on OSX using FreeSSHd on Windows with cygwin bash/sh shell

  - by Tyler Clendenin

  I am testing out running an SSH server on a local Windows VM. I have installed FreeSSHd and set the command shell to "c:\cygwin\bin\sh --login -i" (bash as well) with "Use new console engine" unchecked. (When it was enabled no output would show through the ssh connection anyway) The shell seems to work, but when connecting from my OS-X terminal using ssh all of the shell results comes out ill formatted. $ ls -al total 17 drwxr-xr-x+ 1 SYSTEM Administrators 4096 Feb 2 01:00 . drwxrwxrwt+ 1 Administrator Administrators 0 Feb 2 01:01 .. -rw------- 1 SYSTEM Administrators 128 Feb 2 01:30 .bash_history -rwxr-xr-x 1 SYSTEM Administrators 1150 Feb 2 00:55 .bash_profile -rwxr-xr-x 1 SYSTEM Administrators 3754 Feb 2 00:55 .bashrc -rwxr-xr-x 1 SYSTEM Administrators 1461 Feb 2 00:55 .inputrc Any ideas on why this is happening, how I can fix this?

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• Netcat server output with multiple greps

  - by Sridhar-Sarnobat

  I'm trying to send some data from my web browser to a txt file on another computer. This works fine: echo 'Done' | nc -l -k -p 8080 | grep "GET" >> request_data.txt Now I want to do some further processing before writing the http request data to my txt file (involving regex maniuplation). But if I try to do something like this nothing is written to the file: echo 'Done' | nc -l -k -p 8080 | grep "GET" | grep "HTTP" >> request_data.txt (for simplicity of explanation I've used another grep instead of say awk) Why does the 2nd grep not get any data from the output of the first grep? I'm guessing piping with netcat works differently to what I've assumed to get this far. How do I perform a 2nd grep before writing to my txt file? My debugging so far suggests: It is nothing to do with stderr vs stdout Parentheses don't help

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• Windows 7 does not recognise second display output [closed]

  - by gilles27

  I've got a PC with dual BenQ G2222HDL monitors and an ATI Radeon HD 4650 video card. I've been running both monitors at 1920x1080 for some months now but last week the second monitor switched to a lower resolution and won't let me go back to 1920x1080. If I right click the Desktop and choose Screen Resolution from the menu, I get two items in the Display: drop down list BenQ G2222HDL D-SUB Display device on: VGA In the past 2 was always the same as 1. If I click Detect a third item appears Available display output on: ATI Radeon HD 4650 but if I use the Multiple displays: drop down list to use it says "No display detected" and then lets me choose from either "Connect anyway on S-Video" or "Connect anyway on Component", neither of which help. It seems like Windows 7 recognises the card is dual-head, and knows I have got two monitors, but can't link it all together. I have checked and all my drivers are up-to-date. Does anyone have any suggestions as to how I can get the second monitor working properly again?

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• Configure TV Capture card to not use external audio jack for TV audio output

  - by Adam D.

  I had this working with MythTV on Ubuntu 9.1. Then a power surge killed the motherboard. After replacing the motherboard, ram and cpu, the card does not produce any audio except through the output jack on the back of the card. I do not want to use a cable to go from the back of the card to the audio in on the built in sound card of the new mother board. FYI, the old motherboard did not have an on-board sound card. There was a separate audio card installed. There's some configuration that has to be done to have it work the same way again. I just have no idea where to start. This is regarding wintv hauppauge mythtv linux ubuntu 9.10 audio

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• df -h showing wrong output in GB

  - by Anurag Uniyal

  If I list df output for KB, MB and GB, they do not match e.g. $ df -k |grep xvdb /dev/xvdb1 12796048 732812 11413172 7% /xxx $ df -m |grep xvdb /dev/xvdb1 12497 716 11146 7% /xxx $ df -h |grep xvdb /dev/xvdb1 13G 716M 11G 7% /xxx 12796048 KB = 12496.14 MB so that is slight off but OK 12796048 KB = 12.2 GB, 12407 MB is also 12.2 GB so why df is showing 13 GB or am I missing something? Here is full df listing $ df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.5G 1.7G 5.5G 24% / none 5.8G 128K 5.8G 1% /dev none 5.8G 0 5.8G 0% /dev/shm none 5.8G 44K 5.8G 1% /var/run none 5.8G 0 5.8G 0% /var/lock none 5.8G 0 5.8G 0% /lib/init/rw /dev/xvdb1 13G 716M 11G 6% /xxx Coreutils version seems to 7.4 as info coreutils shows This manual documents version 7.4 of the GNU core utilities,

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• wmic output well formed xml on remote queries

  - by Mervin

  I want to use the WMI command line tool (wmic) to get information about windows computers on the network and output it as valid xml. However, I can't seem to find the right way to do this as the outputted xml currently contains invalid tokens for which I think I should use the /TRANSLATE:basicxml switch. The command: wmic /NODE:"tech-demo" /IMPLEVEL:Impersonate /USER:MyUser /PASSWORD:MyPassword /PRIVILEGES:DISABLE /AUTHLEVEL:Pkt /AUTHORITY:"ntlmdomain:companydomain.local" PATH Win32_LogicalDisk GET * /FORMAT:rawxml This command runs but returns invalid xml tokens ('<' and '' I think? edit: it appears to fail parsing at ‹) When I add the translate switch I get the message: Can not use credentials for local connections a bit strange that it tries to query the local pc when I add the switch.. Help would be greatly appreciated.

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• Nvidia Ion HDMI output problems with Acer Revo

  - by Techfeeler

  I bought an Acer Revo. First I connected it to my Sony TV via HDMI output. For a few days it worked very well. Then one day when switching on the computer, it boots and the TV screen turns black and the TV displays the error message "no input signal". I connected the Revo to a Samsung LED TV, and it did the same. What do you guys think the problem is? How do I tackle this issue? Any help is deeply appreciated.

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• Ubuntu - connecting 3rd monitor fails with "xrandr: cannot find crtc for output DVI-0"

  - by MDCore

  I've got a laptop with a DVI and VGA output on the back. With everything connected it will only allow me to run 2 of the 3 monitors e.g. laptop display + VGA or DVI+VGA but not all 3. xrandr says I have 2 CRTC's, 0 and 1. The internet says I should be able to share a CRTC if the modeline is the same, and my 2 external monitors are the exact same make and model. How do I convince the software to drive all this hardware?

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• Mac Disk-Utility input/output error

  - by Michelle

  a couple of other people have posted about this but my specific problem has not been addressed. For months I have been backing up DVDs and home movies with no problem then all of a sudden I get an "input/output" error. Yes I have cleaned the disks. Actually I have tried 8 different ones - they are not all bad so its obviously my computer. I have done a scan and cleaned up the HD a bit just in case but nothing is helping. I don't want to download other programs since this one works but seems to be having a problem. Any ideas?

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• nagios-nrpe-unable-to-read-output [closed]

  - by Bill S

  Oracle Linux; Icinga; Nagios plugins I did all the easy steps command runs fine standalone through my normal login; looked at /var/log/messages to see if any clues there Trying to run plugin under nrpe login - cant login don't know password; does this password matter? can I reset it? clone id? Any way to have shell being executed log all commands and output to somewhere? Trying to run this shell script plugin "nqcmd OBIEE plugin for Nagios" from this URL: http://www.rittmanmead.com/2012/09/advanced-monitoring-of-obiee-with-nagios/ I went through script and made sure that everything obvious was set to 755 Any help would be appreciated

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• How to assign output bin on HP4730?

  - by user38138

  We have an application that prints batches of invoices and when two users print same time, their jobs get interspersed because the application actually generates a separate job for each invoice. The HP4730 has a bin for phocopies/fax and the bulk bin. A proposal was to create a separate printer definition for each user, and somehow map their output to a different bin to keep their jobs "together". However, we can't see any setting to control this on the printer properties. Does anyone know if thats possible? To make it more interesting, this is within Citrix... Help!

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• Intel motherboard drops HDMI output after Windows boots

  - by Nick

  I have an Intel motherboard (DH67CL) that uses Intel HD 3000 video. It has two video output ports: HDMI and DVI. Both my monitors are DVI, so I have two cables: a DVI-DVI and an HDMI-DVI. If I plug a monitor into just one of these ports, things work fine. But if I plug monitors into each of the ports, the system startup screens show on both monitors, along with the "Starting Windows..." screen, but as soon as the system boots into Windows, the HDMI-connected monitor goes to sleep. When I use the Intel video control panel, the HDMI-connected monitor is not detected. How do I get a dual-monitor setup to work?

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• Understanding top output in Linux

  - by Rayne

  Hi, I'm trying to determine the CPU usage of a program by looking at the output from Top in Linux. I understand that %us means userspace and %sy means system/kernel etc. But say I see 100%us. Does this mean that the CPU is really only doing useful work? What if a CPU is tied up waiting for resources that are not avaliable, or cache misses, would it also show up in the %us column, or any other column? Thank you.

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• dd clone hard drive: Input/Output Error though "chkdsk" says OK

  - by unknown (google)

  Hi, I've used dd to clone hard drives before using 'dd' and a live cd, but have run into a problem. The issue: dd fails with an "Input/Output Error" on /dev/sda3 , even though windows "check disk" (chkdsk) says it's ok. Context: Trying to replace my laptop hard drive w/ a faster one of the same size Laptop has NTFS on a 320gb hard drive Booting into knoppix Knoppix recognizes 'original' drive (/dev/sda) I am using a usb connection for ‘new' drive (irrelevant, but just an fyi) Knoppix recognizes the usb drive as /dev/sdb Using dd, as follows: dd if=/dev/sda of=/dev/sdb "dd" gives the I/O error above at 82Gb (out of 320Gb) I then tried checking each partition as follows and found it failed on /dev/sda3: dd if=/dev/sda1 of=/dev/null dd if=/dev/sda2 of=/dev/null dd if=/dev/sda3 of=/dev/null I have ran windows xp chkdsk on the offending drive in both "find only" and "find and fix" mode and it reports no errors Question How can I find and fix the error on my original hard drive partition (i.e. /dev/sda3) so that dd reads it successfully?

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• ubuntu 12.10/linux mint 14 ssh-copy-id doesn't work and returns Ambiguous output redirect

  - by Marc

  I recently got a new computer and I'm trying to use ssh-copy-id to put my keys on another server so I can login without password. but when I try ssh-copy-id -i ~/.ssh/id_rsa.pub user@server and after inputting the correct password it returns Ambiguous output redirect. There are no other messages after that. I thought it was maybe just Ubuntu 12.10 so I installed Linux Mint 14 and sure enough exact same thing happens. I've tried removing authorized_keys from the remote server but that didn't change anything.

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• How can I sort du -h output by size

  - by Tom Feiner

  I need to get a list of human readable du output. However, du does not have a "sort by size" option, and piping to "sort" doesn't work with the human readable flag. For example, running: du | sort -n -r Outputs a sorted disk usage by size (descending): du |sort -n -r 65108 . 61508 ./dir3 2056 ./dir4 1032 ./dir1 508 ./dir2 However, running it with the human readable flag, does not sort properly: du -h | sort -n -r 508K ./dir2 64M . 61M ./dir3 2.1M ./dir4 1.1M ./dir1 Does anyone know of a way to sort du -h by size?

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