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  • How to host a scalable social networking app

    - by christopher-mccann
    I am in the middle of developing a social networking application for a very select user niche which could scale to a few million users. Right now I have always hosted applications on RackSpace Cloud and I have no issues with them at all - always been a really good service and never had any downtime. My question is though does anyone think that cloud computing is not the way to host scalable web apps? Or can anyone with experience of this recommend a better solution. I have always shunned trying to run big servers from my own facilities as I think it seems silly to go to the expense of bringing in big alternative power supplies and all the other necessary precautions when other companies already do this. I looked at managed hosting services but this proved to be a bit too expensive for us at the start and the scalability of it wasnt good enough - it would take a day or two to get a new server provisioned. Therefore I ended up on a cloud platform. If anyone has any recommendations or advice it would be greatly appreciated.

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  • Remote file copy util (like rsync) but that will take account of data already copied (in this sessio

    - by Rory McCann
    Let's say I have a directory with 2 files, both are identical and quite large (e.g. 2GB ea.) I want to rsync that directory to a remote host. As I understand it (and I could be wrong), rsync calculates checksums of files. Surely if it sees 2 files with the same checksum it can just copy the first file, then do a local copy on the remote host for the 2nd file? That would make it faster, no? On a similar note, doesn't rsync hash all the remote files before copying? If it saw a different file with the same hash as a file that was to transfered, it could do a local copy on the remote host. Does rsync support this sort of thing? Is there some way to turn it on? Is there a tool similar to rsync that will do this sort of 'hash based' local copies?

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  • Simple HTTP server that will send the same file for all requests?

    - by Rory McCann
    I need to debug a XML-RPC application, which sends XML replies over HTTP. I have a sample XML reply (i.e. data from the server, sent to the client that isn't working), I'd like to debug my application. Ideally I'd like a simple HTTP server that will serve one file in reply to all requests. Someone requests /? Send them this file. Someone makes a post to /server/page.php with a certain cookie? Just send them this file. I don't care about multithreading, or security. I will only need to use this for a few hours to debug. I have root on the machine. i.e. I'm hoping there's something as easy to use as this: simple_http_server -p 12445 -f my_test_file I'm aware of python's SimpleHTTPServer module, but I'm not sure how to make it work in this case.

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  • reaching 99.9999% uptime

    - by christopher-mccann
    I am currently developing a project which is mission-critical. The actual domain name is registered with 1 & 1 and I plan on purchasing DynDNS Custom DNS service (which has 5 different geographical locations for DNS) and then another secondary DNS service to make sure my DNS is as failover safe as possible. Does it matter that the registration is with 1 & 1 - are they a weak link in the chain? All I really use them for is to say that DynDNS is my primary DNS nameserver and then my secondary DNS is my other nameserver. I can transfer the registration to DynDNS - Im just not sure if it really matters or not. Thanks

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  • Stop ssh client from offering all the public keys it can find?

    - by Rory McCann
    Like most sysadmins I use openssh all the time. I have about a dozen ssh keys, I like to have a different ssh key for each host. However this causes a problem when I am connecting to a host for the first time, and all I have is a password. I want to just connect to the host using a password, no ssh key in this case. However the ssh client will offer all the public keys in my ~/.ssh/ (I know this from looking at the output of ssh -v). Since I have so many, I will get disconnected for too many authentication failures. Is there some way to tell my ssh client to not offer all the ssh keys?

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  • whats the default username and password for an ubuntu live cd?

    - by Rory McCann
    What's the username and password for an ubuntu live cd image? I ask cause I've recently copied the contents of an ubuntu based live iso (easypeasy, the ldistro for nwtbooks) onto a harddisk, but the squash fs is corrupt. Most likely cause I copied it live. :) so it's not autologging in. Is there a username/password for this? Update: I tried username ubuntu and a blank password, it didn't work

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  • Java threads, wait time always 00:00:00-Producer/Consumer

    - by user3742254
    I am currently doing a producer consumer problem with a number of threads and have had to set priorities and waits to them to ensure that one thread, the security thread, runs last. I have managed to do this and I have managed to get the buffer working. The last thing that I am required to do is to show the wait time of threads that are too large for the buffer and to calculate the average wait time. I have included code to do so, but everything I run the program, the wait time is always returned as 00:00:00, and by extension, the average is returned as the same. I was speaking to one of my colleagues who said that it is not a matter of the code but rather a matter of the computer needing to work off of one processor, which can be adjusted in the task manager settings. He has an HP like myself but his program prints the wait time 180 times, whereas mine prints usually about 3-7 times and is only 00:00:01 on one instance before finishing when I have made the processor adjustments. My other colleague has an iMac and hers puts out an average of 42:00:34(42 minutes??) I am very confused about this because I can see no difference between our codes and like my colleague said, I was wondering is it a computer issue. I am obviously concerned as I wanted to make sure that my code correctly calculated an average wait time, but that is impossible to tell when the wait times always show as 00:00:00. To calculate the thread duration, including the time it entered and exited the buffer was done by using a timestamp import, and then subtracting start time from end time. Is my code correct for this issue or is there something which is missing? I would be very grateful for any solutions. Below is my code: My buffer class package com.Com813cw; import java.text.DateFormat; import java.text.SimpleDateFormat; /** * Created by Rory on 10/08/2014. */ class Buffer { private int contents, count = 0, process = 200; private int totalRam = 1000; private boolean available = false; private long start, end, wait, request = 0; private DateFormat time = new SimpleDateFormat("ss:SSS"); public int avWaitTime =0; public void average(){ System.out.println("Average Application Request wait time: "+ time.format(request/count)); } public synchronized int get() { while (process <= 500) { try { wait(); } catch (InterruptedException e) { } } process -= 200; System.out.println("CPU After Process " + process); notifyAll(); return contents; } public synchronized void put(int value) { if (process <= 500) { process += value; } else { start = System.currentTimeMillis(); try { wait(); } catch (InterruptedException e) { } end = System.currentTimeMillis(); wait = end - start; count++; request += wait; System.out.println("Application Request Wait Time: " + time.format(wait)); process += value; contents = value; calcWait(wait, count); } notifyAll(); } public void calcWait(long wait, int count){ this.avWaitTime = (int) (wait/count); } public void printWait(){ System.out.println("Wait time is " + time.format(this.avWaitTime)); } } My spotify class package com.Com813cw; import java.sql.Timestamp; /** * Created by Rory on 11/08/2014. */ class Spotify extends Thread { private Buffer buffer; private int number; private int bytes = 250; public Spotify(Buffer c, int number) { buffer = c; this.number = number; } long startTime = System.currentTimeMillis(); public void run() { for (int i = 0; i < 20; i++) { buffer.put(bytes); System.out.println(getName() + this.number + " put: " + bytes + " bytes "); try { sleep(1000); } catch (InterruptedException e) { } } long endTime = System.currentTimeMillis(); long timeTaken = endTime - startTime; java.util.Date date = new java.util.Date(); System.out.println("-----------------------------"); System.out.println("Spotify has finished executing."); System.out.println("Time taken to execute was " + timeTaken + " milliseconds"); System.out.println("Time that Spotify thread exited Buffer was " + new Timestamp(date.getTime())); System.out.println("-----------------------------"); } } My BubbleWitch class package com.Com813cw; import java.lang.*; import java.lang.System; import java.sql.Timestamp; /** * Created by Rory on 10/08/2014. */ class BubbleWitch2 extends Thread { private Buffer buffer; private int number; private int bytes = 100; public BubbleWitch2(Buffer c, int number) { buffer = c; this.number=number ; } long startTime = System.currentTimeMillis(); public void run() { for (int i = 0; i < 10; i++) { buffer.put(bytes); System.out.println(getName() + this.number + " put: " + bytes + " bytes "); try { sleep(1000); } catch (InterruptedException e) { } } long endTime = System.currentTimeMillis(); long timeTaken = endTime - startTime; java.util.Date date = new java.util.Date(); System.out.println("-----------------------------"); System.out.println("BubbleWitch2 has finished executing."); System.out.println("Time taken to execute was " +timeTaken+ " milliseconds"); System.out.println("Time Bubblewitch2 thread exited Buffer was " + new Timestamp(date.getTime())); System.out.println("-----------------------------"); } } My Test class package com.Com813cw; /** * Created by Rory on 10/08/2014. */ public class ProducerConsumerTest { public static void main(String[] args) throws InterruptedException { Buffer c = new Buffer(); BubbleWitch2 p1 = new BubbleWitch2(c,1); Processor c1 = new Processor(c, 1); Spotify p2 = new Spotify(c, 2); SystemManagement p3 = new SystemManagement(c, 3); SecurityUpdate p4 = new SecurityUpdate(c, 4, p1, p2, p3); p1.setName("BubbleWitch2 "); p2.setName("Spotify "); p3.setName("System Management "); p4.setName("Security Update "); p1.setPriority(10); p2.setPriority(10); p3.setPriority(10); p4.setPriority(5); c1.start(); p1.start(); p2.start(); p3.start(); p4.start(); p2.join(); p3.join(); p4.join(); c.average(); System.exit(0); } } My security update package com.Com813cw; import java.lang.*; import java.lang.System; import java.sql.Timestamp; /** * Created by Rory on 11/08/2014. */ class SecurityUpdate extends Thread { private Buffer buffer; private int number; private int bytes = 150; private int process = 0; public SecurityUpdate(Buffer c, int number, BubbleWitch2 bubbleWitch2, Spotify spotify, SystemManagement systemManagement) throws InterruptedException { buffer = c; this.number = number; bubbleWitch2.join(); spotify.join(); systemManagement.join(); } long startTime = System.currentTimeMillis(); public void run() { for (int i = 0; i < 15; i++) { buffer.put(bytes); System.out.println(getName() + this.number + " put: " + bytes + " bytes"); try { sleep(1500); } catch (InterruptedException e) { } } long endTime = System.currentTimeMillis(); long timeTaken = endTime - startTime; java.util.Date date = new java.util.Date(); System.out.println("-----------------------------"); System.out.println("Security Update has finished executing."); System.out.println("Time taken to execute was " + timeTaken + " milliseconds"); System.out.println("Time that SecurityUpdate thread exited Buffer was " + new Timestamp(date.getTime())); System.out.println("------------------------------"); } } I'd be grateful as I said for any help as this is the last and most frustrating obstacle.

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  • Error installing Sony Remote Play

    - by Iszi Rory or Isznti
    I'm trying to install Remote Play software to connect my laptop to my PS3. I've found a guide with instructions which seem to be in fairly wide use (found similar walk-throughs on numerous other sites), for running the software on a non-Vaio PC. Tech-Recipies: Playstation 3 – Use Remote Play on any Windows 7 PC The setup essentially goes like this: Download Remote Play software. Download patch by NTAuthority. Install Remote Play as normal. Reboot. Extract NTAuthority patch to Remote Play program folder. Manually register patched DLLs via CLI. Run Remote Play software. Sadly, my problem is early in - Step 3. I had to use Google to find the software download, as the link from Tech-Recipies seems broken. I found the download on Sony's site here: Sony eSupport: Remote Play with PlayStation®3 After downloading and running the software, I hit "Next" at the welcome screen and "I Agree" at the EULA screen. After this, a popup informs me that Setup is checking my computer's information. Then, Setup terminates with this error: I'm running Windows 7 Ultimate x64. Is anyone familiar with this error in this software? Is there a way to work around it? Did I perhaps pick the wrong download from Sony's site?

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  • Bash can't start a programme that's there and has all the right permissions

    - by Rory
    This is a gentoo server. There's a programme prog that can't execute. (Yes the execute permission is set) About the file $ ls prog $ ./prog bash: ./prog: No such file or directory $ file prog prog: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), not stripped $ pwd /usr/local/bin $ /usr/local/bin/prog bash: /usr/local/bin/prog: No such file or directory $ less prog | head ELF Header: Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement, little endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: Intel 80386 Version: 0x1 I have a fancy less, to show that it's an actual executable, here's some more data: $ xxd prog |head 0000000: 7f45 4c46 0101 0100 0000 0000 0000 0000 .ELF............ 0000010: 0200 0300 0100 0000 c092 0408 3400 0000 ............4... 0000020: 0401 0a00 0000 0000 3400 2000 0700 2800 ........4. ...(. 0000030: 2600 2300 0600 0000 3400 0000 3480 0408 &.#.....4...4... 0000040: 3480 0408 e000 0000 e000 0000 0500 0000 4............... 0000050: 0400 0000 0300 0000 1401 0000 1481 0408 ................ 0000060: 1481 0408 1300 0000 1300 0000 0400 0000 ................ 0000070: 0100 0000 0100 0000 0000 0000 0080 0408 ................ 0000080: 0080 0408 21f1 0500 21f1 0500 0500 0000 ....!...!....... 0000090: 0010 0000 0100 0000 40f1 0500 4081 0a08 ........@...@... and $ ls -l prog -rwxrwxr-x 1 1000 devs 725706 Aug 6 2007 prog $ ldd prog not a dynamic executable $ strace ./prog 1249403877.639076 execve("./prog", ["./prog"], [/* 27 vars */]) = -1 ENOENT (No such file or directory) 1249403877.640645 dup(2) = 3 1249403877.640875 fcntl(3, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE) 1249403877.641143 fstat(3, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0 1249403877.641484 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b3b8954a000 1249403877.641747 lseek(3, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek) 1249403877.642045 write(3, "strace: exec: No such file or dir"..., 40strace: exec: No such file or directory ) = 40 1249403877.642324 close(3) = 0 1249403877.642531 munmap(0x2b3b8954a000, 4096) = 0 1249403877.642735 exit_group(1) = ? About the server FTR the server is a xen domU, and the programme is a closed source linux application. This VM is a copy of another VM that has the same root filesystem (including this programme), that works fine. I've tried all the above as root and same problem. Did I mention the root filesystem is mounted over NFS. However it's mounted 'defaults,nosuid', which should include execute. Also I am able to run many other programmes from that mounted drive /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Xeon(TM) CPU 3.00GHz stepping : 1 cpu MHz : 2992.692 cache size : 1024 KB fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtpr bogmips : 5989.55 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 48 bits virtual power management: Example of a file that I can run I can run other programmes on that mounted filesystem on that server. For example: $ ls -l ls -rwxr-xr-x 1 root root 105576 Jul 25 17:14 ls $ file ls ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), stripped $ ./ls attr cat cut echo getfacl ln more ... (you get the idea) ... rmdir sort tty $ less ls | head ELF Header: Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement, little endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: Advanced Micro Devices X86-64 Version: 0x1

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  • Apache - How to disable gzip content encoding (eg DEFLATE) for one set of URLs?

    - by Rory
    I have a ubuntu apache webserver and I have enabled mod_deflate to gzip all the content. However there's one folder I'd like to disable the mod_deflate for. I was going to do something like this: <Location /myfolder> RemoveOutputFilter DEFLATE </Location> But that doesn't work. Rational: I am trying to debug an XMLRPC server and I am using wireshark to see what gets past in the HTTP requests, since the replies are gzipped, I can't see what's going on.

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  • How do I properly configure a ZipInstaller .zic file?

    - by Iszi Rory or Isznti
    As of version 1.20, ZipInstaller is supposed to support the use of a configuration file to customize its installation options. Generally, all the options I want to use are available through the dialog so I really haven't bothered with the configuration file until now. The problem now is that certain tools, such as PsTools from Sysinternals, do not properly show their Product Name to ZipInstaller. ZipInstaller's dialog will let you customize the Start Menu folder and Program Files folder, but that still doesn't change the Product Name that it sees for the software. So, instead of having "PsTools" in my Add/Remove Programs, I get "Sysinternals Software". For some things, the situation is even more confusing. For example, the NIST SP 800-53 Reference Database Application gets installed as "FileMaker Pro Runtime". To rectify this, I've tried to use the aforementioned .zic configuration file. As I understand it, it's a basic INI file you create and put in the root of the ZIP file. ZipInstaller is supposed to read that file, and adjust its parameters accordingly. Mine looks like this: [install] ProductName=NIST_SP_800-53 ProductVersion=1.4.1 CompanyName=NIST Description=NIST_SP_800-53 InstallFolder=%zi.ProgramFiles%\%zi.ProductName% StartMenuFolder=%zi.CompanyName%\%zi.ProductName% I've named it `~zipinst~.zic and placed it in the root of the ZIP file, but when I run ZipInstaller it doesn't seem to recognize any of the information I've given it in the .zic file. What might I be doing wrong here?

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  • rsync - Exclude files that are over a certain size?

    - by Rory
    I am doing a backup of my desktop to a remote machine. I'm basically doing rsync -a ~ example.com:backup/ However there are loads of large files, e.g. wikipedia dumps etc. Most of the files I care a lot about a small, such as firefox cookie files, or .bashrc. Is there some invocation to rsync that will exclude files that are over a certain size? That way I could copy all files that are less than 10MB first, then do all files. That way I can do a fast backup of the most important files, then a longer backup of everything else.

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  • Firefox being really sluggish on php.net website?

    - by Rory
    Is it just me, or is firefox (3.5 on Ubuntu 9.10 karmic) really sluggish when opening the PHP.net website? When I have several tabs open with just the PHP.net website, and I tab up and down (with Control-PageUp/Down), it's slow to change tab. If I do it quickly, then firefox freezes for a few seconds (I know because it goes grey, which is a compiz feature to show unresponsive windows). The CPU usage also goes up when I'm tabbing to PHP.net pages. UPDATE: This appears to happen for all PHP.net webpages. For other pages, on other sites, Firefox is fine (for me).

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  • Cutting users off in Windows console sessions

    - by RoRy
    I'm currently working in a company where many of us log onto hosts/servers under Windows Server 2008 via console session. If one person is logged on and another tries it causes the person who was logged on first (and maybe doing something important) to be cut off. Is there such a thing as an application for such events where before logging on people can see if any other IP address is controlling the host/server? Also, if the person on the console session had the ability to leave a note for anybody thinking of taking over the session of when they are finished etc.. I have many other ideas for such things but could someone tell me if such an application exists?

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  • Windows server 2008 UPS support

    - by Rory McCune
    I'm looking to set-up a UPS on a Windows Small Business Berver 2k8 and I've noticed that there are some large price differences for similar capacity in-line UPSs. The most important point for me in UPS selection is that the server should have the ability to shut itself down before the UPS power runs out, so that if the server is unattended during the outage, it should minimize the risk of data loss. From some reading it appears that Windows Server 2008 should has the ability to natively recognise a UPS, which can then be managed through the battery settings on the server or via WMI. What I'm wondering if anyone know is, Is Windows 2008 servers UPS support specific to certain brands of UPS (eg, APC) or is it likely to work with any UPS which has a USB port, which I can connect to the server?

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  • Create an AWS AMI for Ubuntu with GUI which automatically launches web browser

    - by Rory MacDonald
    I've got an ubuntu AMI setup with ubuntu desktop installed and Chrome installed and set to boot on load (via the startup programmes menu within the ubuntu desktop) I've created an image of this AMI, but any time I launch a new instance running this, the Ubuntu GUI doesn't seem to load, until I SSH into the machine, enable VNC and then connect via Chicken VNC to the machine. At that point, the desktop appears to load + starts the browser. I really need the machine to boot and the browser to load without having to VNC into the machine.. Any help would be appreciated.

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  • Configure Apache + Passenger to serve static files from different directory

    - by Rory Fitzpatrick
    I'm trying to setup Apache and Passenger to serve a Rails app. However, I also need it to serve static files from a directory other than /public and give precedence to these static files over anything in the Rails app. The Rails app is in /home/user/apps/testapp and the static files in /home/user/public_html. For various reasons the static files cannot simply be moved to the Rails public folder. Also note that the root http://domain.com/ should be served by the index.html file in the public_html folder. Here is the config I'm using: <VirtualHost *:80> ServerName domain.com DocumentRoot /home/user/apps/testapp/public RewriteEngine On RewriteCond /home/user/public_html/%{REQUEST_FILENAME} -f RewriteCond /home/user/public_html/%{REQUEST_FILENAME} -d RewriteRule ^/(.*)$ /home/user/public_html/$1 [L] </VirtualHost> This serves the Rails application fine but gives 404 for any static content from public_html. I have also tried a configuration that uses DocumentRoot /home/user/public_html but this doesn't serve the Rails app at all, presumably because Passenger doesn't know to process the request. Interestingly, if I change the conditions to !-f and !-d and the rewrite rule to redirecto to another domain, it works as expected (e.g. http://domain.com/doesnt_exist gets redirected to http://otherdomain.com/doesnt_exist) How can I configure Apache to serve static files like this, but allow all other requests to continue to Passenger?

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  • Linux disk usage analyser that acts like symlinks are real files

    - by Rory
    I am using git-annex, an extension to the DVCS git, which is designed for handling large files. It makes heavy use of symlinks. The actual large files are moved to the .git/annex directory and the original files are symlinked to there. I am running out of disk space, and need to clear up, and see what's using all my space. Usually I'd use a disk usage tool like ncdu, Baobab or Filelight. However they treat the symlink as essentially empty, and only count the file that it is pointing to as using any space. Which means when I use git-annex, it shows no space used in the main directories and lots of space used in the .git/annex directory. This is not helpful. Is there any (graphical or ncurses) based disk usage programme for linux (apt-get installable would be easie that is capable (through options or not) of counting a symlink as using up the space that the original file uses up? Many have options for different behaviour for hard links, so makes sense that some should h (I know counting symlinks as using space has flaws, like counting the space space twice, broken symlinks, etc. But that's OK for my purposes)

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  • How can I anonymize my browser useragent, yet still be counted as a FF/Ubuntu user?

    - by Rory
    I read about EFF's Panopticlick project to see how unique your webbrowser's headers are. I would like to anonymize that a bit. My current User Agent is Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20100106 Ubuntu/9.10 (karmic) Firefox/3.5.7 I would like to make that more anonymous, however I still wanted to be counted as a Firefox and Ubuntu user. How can I change my User Agent in Firefox? What should I change it to so that it's less unique, but will be counted as a Firefox user and a Ubuntu user on web analytics software? I know that there is no guarantee that I will be counted a Firefox/Ubuntu user, just something that 'works most of the time' would be sufficent.

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  • OS X - forwarding external port to local loopback address

    - by Rory Fitzpatrick
    I have an HTTP service bound to port 8000 that I want to access from another computing on the network, but I can't seem to connect using the external IP address of the machine (e.g. 192.168.0.105). I've checked the OS X firewall isn't running, so I'm assuming the issue is the service is only bound to the IP address 127.0.0.1, and not the external IP address. What would be the easiest way to temporarily forward external connections on port 8000 to 127.0.0.1:8000?

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  • Simple Distributed Disconnected way to sync a directory

    - by Rory
    I want to start regularly backup my home directory on my ubuntu laptop, machine X. Suppose I have access to 2 different remote (linux) servers that I can backup to, machines A & B. Machine X will be the master, and should be synced to A and B. I could just regularly run rsync from X to A and then from X to B. That's all I need. However I'm curious if there's a more bandwidth effecient, and hence faster way to do it. Assuming X is going to be on residential style broadband lines, and since I don't want to soak up the bandwidth, I would limit the transfer from X. A and B will be on all the time, however X, will not be, so I'd also like to reduce the amount of time that X is transfering, potentially allowing A and B to spend more time transfering. Also, X won't be connected all the time. What's the best way to do this? rsync from X to A, then from A to B? Timing that right could be troublesome. I don't want to keep old files around, so if I was to rsync, then the --del option would be used. Could that mean something might get tranfered from A to B, then deleted from B, then transfered from A to B again? That's suboptimal. I know there are fancy distributed filesystems like gluster, but I think that's overkill in this case, and might not fit with the disconnected nature.

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  • Why would anacron not be running?

    - by Rory
    I have a Ubuntu system that has anacron installed. However I'm pretty sure it's not running. It's not running the commands in /etc/cron.daily to rotate the syslog files (I'm using sysklog, which has its own rotating log method, not using logrotate). The last time the logs were rotated were in October 2009. /var/spool/anacron/cron.daily exists and the contents are 20091015. AFAIR we had a power outage then, and everything rebooted. How can I debug anacron? How can I see why it's not running? My first instinct is to look for /var/log/anacron, but that's not there. How can I fix it to make it run again?

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  • Outlook 2007 - repainting (?) problems when copying and pasting between windows: have to switch focus before pasted text is visible

    - by Rory
    For some time now I've had a problem when copying and pasting between Outlook 2007 windows, or from other office apps into Outlook 2007. When I paste, say into a new email, the email window's text area goes blank. The window isn't 'not responding', the To and Subject contents are still visible, but it looks like all the text in the email has been deleted. Initially I thought it was just taking ages to paste, but it turns out I need to switch focus to another window and then switch focus back to the Outlook window. Only then does the body of the email repaint itself. It's at the point that I click onto the Outlook window that the body area changes from blank white to showing all the text that was there before plus the pasted text. Any ideas? I've updated my graphics driver. Not sure what else it could be. I do sometimes have similar problems in Visual Studio 2010 too: when I paste text into a code window it doesn't show immediately, but the rest of the window shows what was there before I pasted. I'm using Win XP with all updates applid, on a Dell Vostro 1510.

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