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• Extract first page from multiple pdfs

  - by Tim Alexander

  Have got about 500 PDFs to go through and extract the first page of. They then need to go through some time consuming conversion process so was hoping to try and save some time by have a batch process to extract just the first page from the 500 pdfs and place it in a new pdf. Have had a poke around Acrobat but can find no real method of doing this for multiple files. Does anyone know any other programs or methods that this could be achieved? Free and open source are obviously more favourable :) EDIT: Have actually had some success using GhostScript to extract just one page. Am now looking at how to batch that and take the list of files and use those.

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• How to revert to "last known good configuration"

  - by Ripley

  Hi Guys. I failed to install ubuntu 10.04 with WUBI, for some reason it's showing me the root partion is not defined. I'm bored to fight with it so I just removed ubuntu in windows. However this installation made my original Windows XP cripple, a normal boot will end up with a blue screen, error code 7E, I'm still able to boot with the 'last known good configuration' tho. My understanding is booting like this will recover things and I'm supposed to be good when reboot, while this is not the case for me, I have to choose the 'boot from last known good configuration' each and every time to work around the blue screen. Could you suggest how could I resolve this? I feel it's foolish having to waste 10 more seconds each time starting the OS.

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• Fix two-finger Trackpad Scrolling on a Macbook running Bootcamp

  - by roryok

  This is an issue that's annoyed me for some time. About a year ago, the two-finger scrolling in Windows 7 on my Macbook Pro stopped working. I discovered that a fix for this is to open Bootcamp from the control panel, go to the Trackpad tab, tick and untick "Tap to click" and click ok. This has to be done every time the machine is woken from sleep or rebooted. I'm now using Windows 8 and encountering the same issue. I've tried several different driver revisions, and none have helped. I'm sick of going through the motions. Has anyone got a solution for this?

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• quick check of open port

  - by shantanuo

  The following is working as expected. (do not want to use nmap) I need to use nc (or any other built-in centOS) command in shell script to check the port 6379 of a remote server. I want the script to exit quickly if no response received in less than 1 second. But it seems that nc will wait for too long before quitting with exit code of 1 How do I "quickly" check if the port is listening? # time nc -z 1.2.3.4 1234 real 0m21.001s user 0m0.000s sys 0m0.000s # echo $? 1 # time nc -z 1.2.3.4 6379 Connection to 1.2.3.4 6379 port [tcp/*] succeeded! real 0m0.272s user 0m0.000s sys 0m0.008s # echo $? 0

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• tail -f updates slowly

  - by Cliff

  I'm not sure why, but on my Macbook Pro running lion I get slow updates when I issue "tail -f" on a log file that is being written to. I used to use this command all the time at my last company but that was typically on Linux machines. The only thing I can think of that would possibly slow the updates are buffering of output and/or maybe a different update interval on a Mac vs. Linux. I've tried with several commands all which write to stout relatively quickly but give slow updates to the tail command. Any ideas? Update I am merely running a python script with a bunch of prints in it and redirecting to a file vi " my output.log". I expect to see updates near real time but that doesn't seem to be the case.

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• VMware - Watching multiple virtual machine screens

  - by mr.b

  Hi, I don't know even if I put the question right, but here's what I'd like to accomplish. I have avoided specifying exact Vmware virtualization product here because I'm not sure which one would be most suitable for the task at hand. I am developing an application that works in local network. This application has to run on several computers at the same time, and it's important to me, as a developer and tester, to see (literally) how it behaves at all times on all computers. Is there any way to connect to screens of virtual machines deployed on ESX, ESXi, Sever 2.0, or some other product, so that I can see something like grid of screens, say 4x4 or 6x4 or whatever number of scaled screens, at the same time? Ability to interact with screens directly from grid (by double-clicking a screen, for instance, and then getting full resolution screen) would be greatly appreciated, of course. I hope that someone understood what I meant here. :)

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• Raid 5 with 4 disks on Debian automatically creates a spare drive

  - by Razer

  I'm trying to to create a RAID 5 with 4x 2TB disks on Debian 6. I followed the instructions from: http://zackreed.me/articles/38-software-raid-5-in-debian-with-mdadm I created the raid with following command: sudo mdadm --create --verbose /dev/md0 --auto=yes --level=5 --raid-devices=4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 After creating the RAID mdadm --detail /dev/md0 shows me: /dev/md0: Version : 1.2 Creation Time : Mon Jun 11 18:14:26 2012 Raid Level : raid5 Array Size : 5860535808 (5589.04 GiB 6001.19 GB) Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Mon Jun 11 18:14:26 2012 State : clean, degraded Active Devices : 3 Working Devices : 4 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric Chunk Size : 512K Name : rsserver:0 (local to host rsserver) UUID : a68c3c99:1ef865e9:5a8a7bdc:64710ed8 Events : 0 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 8 33 1 active sync /dev/sdc1 2 8 49 2 active sync /dev/sdd1 3 0 0 3 removed 4 8 65 - spare /dev/sde1 Why is there a spare drive? I didn't create one. I don't want to use a spare drive.

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• How do you debug why Windows is slow?

  - by aaron

  I've got Vista Biz and when my machine chugs I think it is because of paging, but I never know how to verify this. Procexp doesn't seem to provide useful information because it appears that nothing is going on when the chugs happen. perfmon seems like it has the counters I need, but I'm never sure what counters I should add to cover the information I want. For perfmon, I prefer numbers that are percents, so I can gauge load. Here are the counters I have up, but they don't always seem to correlate to chugs: - % disk time (logical) - page faults/sec (an indicator of lots of paging activity) - processor/%priviliged time

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• Any website/software where I can add some text rows on daily basis

  - by Moorage

  I have few notes or text like few remembering lines on daily or weekly basis. I want to write it. but i should be able to see at any backdate /monthly or yearly. The date-time should also be stored when i enter text. is it possible EDIT: I will explain clearly what i exactly want. Suppose while working on internet 1)i find "ABC is good for BCD". now i want to add that text to some online site where i can see later 2)Now i can add those type of things any time and on internet i can see that in tabular form like click to see montly list , yearly or weekly 3)Other thing is i should be able to add text as easy as possible like in firefox if i can press some shotcut and enter something and it gets added there rather than opening the site and then write The to do list do that sort of thing but they dont have creation date , rather they filter based on due date.

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• How to copy only VM changes in VMware to another physical machine

  - by Paul

  How can I use VMware Workstation to copy only changes to a VM to another physical machine, rather than recopying the entire VM every time? Can I just copy the snapshot files, if the second physical machine starts from a pristine copy of the VM? Would it be best to create a linked clone against the original VM, and then copy the linked clone directory each time? Does that even work? (I'm assuming I'll have to change the path in the VM's metadata file, since the paths will be different. I'm assuming I can't clone a linked clone w/o cloning the base.) Background: I and another developer with VMware Workstation are using VM's for systems development. I have to work from a home desktop. Transporting a multi-gigabyte VM either direction takes several hours at best. Downloading it is easiest, but that takes an hour to get it on a DMZ machine for download and then many hours to actually download.

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• Why grep -i is so slow? How to do it faster for ASCII?

  - by Vi.

  $ time lzop -d < tvtropes-index.lzo | egrep -B 5 '[Dd][eE][sS][cC][eE][nN][dD] ?[Ff][rR][oO][mM]' real 0m0.438s $ time lzop -d < tvtropes-index.lzo | egrep -B 5 'descend ?from' -i real 0m11.294s Both search insensitively. why -i so slow? How to make fast grep -i without entering things [iI][nN] [tT][hH][iI][sS] [wW][aA][Yy]? For example, perl -ne 'print if /descend ?from/i' works fast, but '-B 5' is not as trivial to implement as in grep (as well as other options).

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• Best way to monitor host

  - by Axle

  I have just set up a host which receives messages from 300b to 1500b (wrapped stx etx)and replies with the same. It works fine but some times it receives junk data. Is there anyway to monitor this out of band data just so we can make sure we are not receiving massive amounts of it. Also is it possible to monitor if connections time out - where the host did not reply in time or long connections where it takes the host 20 seconds to reply when it normally takes 5. I am aware of IP monitor but I don't think it covers enough - Is there anything else or any other way? Thanks in advance!

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• IP Connflict on network

  - by PSU_Kardi

  I keep getting an IP conflict on my home network and can't figure out why. I'm running a Belkin-N wireless router that has an Ethernet connection to my 360 and a wireless connection running to my laptop. It's WPA2 encryption and I have a nice password on my router consisting of letters , numbers and special characters. But for some reason I keep getting IP conflicts at night time...By the time I look into the problem I don't see anyone else on the network. Is my router giving me false positives?

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• Oracle Logical Standby redo generation

  - by DCookie

  Oracle 10.2.0.4 database with a logical standby on Win2K3. Recently a rather large delete operation was carried out on the production instance. I'm experiencing difficulty with the logical standby, in that it gets a couple of hundred (58M size) archive logs into the operation and the apply process fails with an out-of-memory error. Unfortunately, every time it fails it has to restart the apply from the beginning of the transaction. This is taking a couple of days each time. Anyway, in trying to resolve this problem, I've noticed that each archive log from the production system generates 5 or 6 log switches on the standby. I don't understand why this should be. Anyone have any ideas? A related question that I've not found the answer for: does anyone know if the logical standby must be running in archivelog mode? I really don't have a need to keep the logs.

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• Is it possible to upload only files that have been updated into a server?

  - by kamikaze_pilot

  Hi guys, Suppose I have a server accessible via FTP and it hosts websites Suppose I want to edit the website locally so it wont affect the site live, and suppose I edit a whole bunch of files, and I don't want to deal with the hassle of keeping track of which files I've edited all the time... Once I finished editing I want to upload it to the server via FTP....is there some FTP software that automatically detects which files have been edited and have only those files uploaded and overwritten rather than having me manually choosing the files I've edited (and hence having to keep track of edited files) or have me upload the entire site which is a waste of time thanks in advance

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• Downloading content greater than 2000 bytes from local network hangs in browser on Windows XP

  - by artplastika

  We have web application that runs under Tomcat in a local network. Our customers experience strange problem using this web application. Let's say Tomcat server runs on host1 and we open webapp URL in browser on host2. Any browser on host 2 starts opening page and downloading of content "hangs" for hours. We've made bunch of experiments and found that any content larger than 2000 bytes makes browser request hang. Tried in Internet Explorer 8, Opera 12, Firefox. At the same time if user opens website from internet, it works. Opening webapp from the same host1 where Tomcat is running works normally. Local network is organized with D-Link DGS-3120-48TC switch. Additional info. During experiments we've noticed XP Tweaker installed on hosts. Network settings from that tool: MTU is manually set to 1500 RWIN = 14600 Support of TCP frames larger than 64 KB is on Time to Live = 32 SACK is on

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• Cannot boot from Yumi multiboot USB stick

  - by Amator

  I've just created a multiboot USB stick using Yumi. I tried to start my notebook (Asus K70IO) using it, but all I see is just a black screen with blinking underscore even after waiting for minutes. If during this time I remove the USB stick I get the message: "Operating system load error". How do I properly load my Yumi USB stick and use it? I've tried formatting it using Yumi's checkbox to format the stick in FAT32 too, but it didn't help. Now I tried to use Sardu 2.0.5 and met same problem: black screen and blinkin underscore, if I remove stick I see "Operating system load error" and my OS starts to boot. At the same time if I create bootable USB stick from ISO using UltraISO it boots smoothly.

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• What about IPv4 class E?

  - by Luc

  IPv4's class E network (240.0.0.0/4) contains 268 million addresses. Despite the advertisements for IPv6, claiming we have ran out of address space, this block ironically still claims to be "Reserved for future use". Why hasn't this block been freed up yet? Of course, IPv6 should be promoted instead of freeing up more IPv4 addresses, but we've seen the address shortage coming for years. There has even been a time they weren't sure there was enough time to develop IPv6 before we would run out of addresses. Why didn't they free up this block already? And is there any chance these addresses will be used in the future, like when IPv6 is fairly widely implemented but we still need IPv4 for backwards compatibility? It will be phased out regardless, but then ISPs don't have to employ NAT for IPv4 compatibility.

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• Windows Server 2003 guest on Xen frequently stops responding

  - by smokris

  I'm running a Windows Server 2003 guest instance in Xen 3.x. This DomU runs fine for a day or two, then stops responding — I don't get any network response, and I can no longer connect to Xen's VNC console for this DomU. xm list shows this: Name ID Mem VCPUs State Time(s) Domain-0 0 6508 8 r----- 1161159.4 [A working Linux DomU] 1 512 1 -b---- 68711.1 [The hung Windows DomU] 5 512 1 ------ 67234.2 [Another working Linux DomU] 3 512 1 -b---- 163036.4 (What does the ------ mean? The xm manual explains what each of the six states mean, but not what no-state means.) If I xm destroy and then xm create the Windows DomU again, it boots right back up (with the Windows alert The previous system shutdown at [...] was unexpected.), and then stops responding after another day or two. I checked /var/log/xen/*.log, but no log messages are generated at the time the server stops responding. How should I proceed in troubleshooting this?

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• Reporting available RDP sessions

  - by Sergei

  Hi All Default Windows 2003 Server has two RDP sessions available.If all of them are taken by someone else you will only be notified about it after providing your credentials. This seems like a waste of time especially in our environment where we share a lot of development server. Could a message be given as soon as you open the connection window if the connections are taken up? We can use qwinsta based script to check sessions before logon but it's still takes time. Is there a feature to do what I am asking for?

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• How do I get rid of auto-generated line breaks by Blogger from plain-text emails?

  - by Avry

  I'm trying to use plain-text emails to submit posts to my blog that's hosted on Blogger. I've set my email client to use plain-text but every time I send a post, Blogger hard wraps it instead of letting the text just flow. I've tried this with different mail clients and gotten the same results. I'm 100% sure that I'm sending plain text each time. Does anyone know how to get Blogger to quit doing this? Sigh. Maybe I'll switch to Wordpress...

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• bash shell script which adds output of commands

  - by John Kube

  Let's say I have a command called foo which prints a number to the screen when called: $foo 3 Let's also say I have another command called bar which prints another number to the screen when called: $bar 5 I'm looking to write a shell script which will add together the output of foo and bar. How would I do that? (The outputs from the commands are not known ahead of time. They just so happen to have been 3 and 5 the last time they were run. They could have been something else.) Thanks!

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• LAMP: How do I set up http://myservername.com/~user access?

  - by Travesty3

  Been trying to Google this, but I can't figure out good search terms to find any info about what I need, since I don't really know what it's called. I'm pretty much being thrown to the wolves to figure out how to set up a LAMP server. We had someone who knew how to do it, he set one up and then quit. It was set up so that when I went to "http://{myservername}.com/~travis" it showed the contents of my /home/travis/public_html folder. This worked fine, then we lost power and the server restarted (I know, battery backup, but this is a dev server in a dev building so it's OK). Now, the browser can't find that URL. I also need to know how to set this up on a new server, so instead of wasting time diagnosing this problem (probably just something dumb I did messing with settings or something), I really need to know how to set this up from scratch. Thanks for taking the time to read this and (hopefully) answer!

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• Building a Server at Home

  - by madhairsilence

  Am left with a Spare PC . So , I thought of converting it to a Server kind of thing. I read about NAS Serer for simple file storage. But it is just a file server. I also play games like counter strike and other online games. So, I would like to use the same server for those purpose., so that a game server will running all the time so that me and my friends can join any time. Is running NAS server a best option or, is there any better arrangement possible so that my spare system can act better than a simple file server

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• Do you find using a VPS worthwhile?

  - by Grant Palin

  I am currently on shared hosting, and have been recently looking at the idea of switching to a VPS instead. From what I have gathered, a VPS allows you more control over your server setup. But at the same time you have to set it up yourself, and maintain it. This is the bit I am asking about... Despite the power and flexibility you get from using a VPS, you have to take care of it yourself. Is it worth it? Some context: I am primarily a Windows user, but have been tinkering with various Linux distros off and on for several years. I know enough about Linux to get by, or to be dangerous - take your pick. I've also done some tinkering on my current host, but have no serious sysadmin experience. There's always a first time!

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