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• InstallShield or Windows installer corrupted

  - by Bobby S

  Just recently I've been unable to install any software on my Windows 7 machine. Anything that uses InstallShield or the Windows installer will just hang or give a weird error. I noticed there will be many duplicate isbew64.exe processes (like 25) that launch and then just sit there or else a lot of msiexec.exe *32 processes, depending on what I'm trying to install. One piece of software specifically is the Logitech Harmony software. It gives me an *is_string_not_defined* error, saying c:\program files (x86)\:\ the filename, directory name, or volume label syntax is incorrect. The other thing I was trying to install was Battlefield: Bad Company 2, and that just hangs as well, and then just leaves all the Windows installer processes running in the background after I quit the install process. Very odd. I've checked well and googled these issues, it doesn't appear to be any sort of malware issue. I feel like it's related to some kind of corrupted installer application. I've rebooted, deleted the InstallShield folder in program files/common files as some places online suggested but to no avail. I have no idea what to do, any ideas?

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• How to make Windows command prompt treat single quote as though it is a double quote?

  - by mark

  My scenario is simple - I am copying script samples from the Mercurial online book (at http://hGBook.red-bean.com) and pasting them in a Windows command prompt. The problem is that the samples in the book use single quoted strings. When a single quoted string is passed on the Windows command prompt, the latter does not recognize that everything between the single quotes belongs to one string. For example, the following command: hg commit -m 'Initial commit' cannot be pasted as is in a command prompt, because the latter treats 'Initial commit' as two strings - 'Initial and commit'. I have to edit the command after paste and it is annoying. Is it possible to instruct the Windows command prompt to treat single quotes similarly to the double one? EDIT Following the reply by JdeBP I have done a little research. Here is the summary: Mercurial entry point looks like so (it is a python program): def run(): "run the command in sys.argv" sys.exit(dispatch(request(sys.argv[1:]))) So, I have created a tiny python program to mimic the command line processing used by mercurial: import sys print sys.argv[1:] Here is the Unix console log: [hg@Quake ~]$ python 1.py "1 2 3" ['1 2 3'] [hg@Quake ~]$ python 1.py '1 2 3' ['1 2 3'] [hg@Quake ~]$ python 1.py 1 2 3 ['1', '2', '3'] [hg@Quake ~]$ And here is the respective Windows console log: C:\Workpython 1.py "1 2 3" ['1 2 3'] C:\Workpython 1.py '1 2 3' ["'1", '2', "3'"] C:\Workpython 1.py 1 2 3 ['1', '2', '3'] C:\Work One can clearly see that Windows does not treat single quotes as double quotes. And this is the essence of my question.

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• Fix stubborn 'Setting locale failed.'

  - by user60129

  I have a very stubborn, well-known locale error on Ubuntu 9.10: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LC_TIME = "custom.UTF-8", LANG = "en_US.UTF-8" Tried the following: Added LANG=en_US.UTF-8 and LC_ALL=en_US.UTF-8 to /etc/environment Run apt-get install --reinstall locales (error: perl: warning: Falling back to the standard locale ("C"). /usr/bin/mandb: can't set the locale; make sure $LC_* and $LANG are correct) Run sudo dpkg-reconfigure locales. Result: Cannot set LC_ALL to default locale: No such file or directory, and then updates locales all locales including en_US.UTF-8 sudo locale-gen updates all locales successfully, including en_US.UTF-8 sudo locale-gen un_US en_US.UTF-8 gives no error nor other output In /etc/default/locale it says LANG="en_US.UTF-8" echo $LANG gives en_US.UTF-8 /var/lib/locales/supported.d/local says en_US.UTF-8 UTF-8 locale -a gives me: C en_AG en_AU.utf8 en_BW.utf8 en_CA.utf8 en_DK.utf8 en_GB.utf8 en_HK.utf8 en_IE.utf8 en_IN en_NG en_NZ.utf8 en_PH.utf8 en_SG.utf8 en_US.utf8 en_ZA.utf8 en_ZW.utf8 POSIX So well... I am pretty much out of options I can think of. Anybody any idea?? Thanks!

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• Is there any reason this cronjob would fail in cron, but not on the command line?

  - by Treffynnon

  I have written a little one liner that will email me when a list of files changes - I used sha512 to generate a list of hashes and then periodically check that those hashes still match. */5 * * * * /usr/bin/sha512sum --status -c /sha512.sumlist && echo "Success" > /dev/null || echo "Check robots.txt and index.html in /var/www as staging sites are now potentially exposed to the world and the damned googlebot" | /usr/bin/mail -s "Default staging server files have changed" [email protected] It works fine on the command line with: /usr/bin/sha512sum --status -c /sha512.sumlist && echo "Success" > /dev/null || echo "Check robots.txt and index.html in /var/www as staging sites are now potentially exposed to the world and the damned googlebot" | /usr/bin/mail -s "Default staging server files have changed" [email protected] As soon as I run it as a cronjob though it emails every time it runs with the failure message instead of only when the sha512sum check should fail. Is there something silly I have missed in a rush? I forgot to mention that I am running an Ubuntu machine.

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• Basics about file/folder permissions on Win 7

  - by Altar

  Hi. Under Win XP I never touched the permissions of a file/folder. I was happy with the way it worked. But recently I installed Windows 7 on a drive that previously hosted Windows XP. Now, some programs do not have 'read' and/or 'write' access to their own folders - and I am not talking about system folders like 'Program Files' but normal folders like 'C:\my data\my own folder\program folder'. I see that for folders created under Win XP I have some user groups that do not exist for 'normal' folders (folders created by me recently under Windows 7). For example, for the Win XP folder I have: Creator owner System Account unknown(S-1-5-21 blablabla... Admins Users For Win7 folders I have: Authenticated users System Admins Users How should I proceed? Should I give the right to the "Users" account to write to XP folders? Should I make the old folders (the XP folders) to have the same groups of users as the normal (Win7) ones by adding the "Authenticated users" account to those folders? Should I delete the "Account unknown" account from my system? (In this case, how?) Many thanks.

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• RDP suggesting a user name when connecting to a server

  - by Neolisk

  Prior to Event X, RDPing to Server 2003 always caused the user name appear blank and Login to be enabled, so you could pick to which domain you would log in. For us it's either local or our domain. Since a recent Event X a domain + user name is being suggested for every server and it's not the most recently used user name. If you remove it manually from RDP dialog, it's still being pre-populated for you, and then at the next available opportunity it returns into General/User name option of RDP dialog. So user name field comes pre-populated and you cannot change to log in locally (only if you manually erase domain specifier - everything before \) - Log in to option is disabled by default. We did not do any changes to our domain or client machines, so I am suspecting some Windows update caused it (and this being Event X). Interesting fact - it does not consistently happen on all machines, and some can login to some servers fine, while other servers keep suggesting a default user name. What could be that Event X and is there a way to fix it? EDIT: I tried this - How to clear remote desktop connections history and specifically this part of it: reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\UsernameHint" /f The problem still persists.

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• How do I find the Serial Number of a USB Drive?

  - by jamuraa

  I'm trying to re-enable USB Autoplay in a secure way, by installing a program on each of the computers that I use so that I can run my launcher (PStart in this case) whenever I plug in my specific USB drive. The tool that I'm using to enable this - AutoRunGuard - needs the serial number of the USB drive that I am using. I can't figure out where to find this in Windows. Ideally I would not need to install and run a separate program to do this (seemingly) simple task. Since this is a pretty easy question, bonus points if you also tell me how to discover it in Linux as well. What steps do I need to take to retrieve a USB Drive's serial number? UPDATE: Just incase people come here looking for the answer for AutoRunGuard, I discovered that they don't want the USB device serial number, but the volume serial number. The drive serial can be found by going into the command line, navigating to the drive, and executing dir. The volume serial number is found in the top two lines - use it without the dash.

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• How to add a writable folder to the PHP document root on linux

  - by Ron Whites

  We are building an example bash script for our PHP TestCoverage Tool use on Linux. The development environment is Ubuntu 12.04_1 but we intend to have the linux example work across as many linux versions as possible without modification. The example linux script requires a variable be set to the PHP Document Root path and by default uses a small PHP example source to show the user how our GUI and text report shows the covered and uncovered PHP code areas. The linux script is also intended to be easily alterable by the user to automate the TestCoverage display of users PHP code. The problem we are having with Ubuntu 12.04 (any linux?) is that the PHP Apache2 document root is defined in /etc/apache2/sites-available/default as /var/www and /var/www is defaulted with "drwxr-xr-x" read only access. So in order to add our own folder as /var/www/SDTestCoverage we must change /var/www to "drwxrwxrwx" read-write access. So it seems our script (at least on Ubuntu) will need to ... 1. acquire and save the /var/www permissions then do .. 2. sudo chmod 777 /var/www (to make writable) 3. mkdir -p /var/www/SDTestCoverage (create our folder under the document root) 4. sudo chmod 777 /var/www/SDTestCoverage (make our subfolder writable) 5. and finally restore /var/www permissions Thanks and our Questions are .. 1. Is this the standard way (using Ubuntu) one adds a writable folder under the PHP Document Root? 2. Is this the most general purpose way one adds a writable folder under the PHP Document Root on other versions of Linux?

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• Dual boot Windows 8 and Ubuntu 12.10 across a reboot

  - by AK4749

  My Setup: I have two separate SSDs, and each contains an independently bootable OS - W8 and U12.10. From my extremely limited knowledge, this means each has a functioning EFI partition(?). My default boot order (GA-Z68XP-UD3P mobo with UEFI firmware update) boots the UEFI partition containing windows first, but if I enter the BIOS I can select the "ubuntu" entry to successfully boot ubuntu. Both drives are GPT, and are EFI boots. What I want to do: Reboot Windows 8, re-enter W8 (this is happening now due to the default boot order). What I want to change, however, is to boot into Ubuntu if i reboot from ubuntu. Essentially, I would like to work within one OS unless I consciously choose otherwise. Normally, I would not even ask to something I thought was impossible, but... Why I think this is possible: When trying EasyBCD to add ubuntu to the W8 UEFI bootloader, I noticed an "iReboot" addon or something that allows you to select which OS to boot into from within the OS. Note that I ended up not using the NeoGrub entry to chain Ubuntu off the W8 bootloader because I couldn't get much help with it. Is this possible? Have I had too much coffee and gone insane? Thank you all for your time, AK

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• Linux as a gateway (no NAT)

  - by Hugo

  I'm trying to configure a linux server as a gateway/router, but I can't get it to work, and all information I've managed to find is NAT-related. I have a public IP block for the gateway and devices behind it, so I want the gateway to simply route packets to the internet - again: no NATing! I've managed to get the gateway to access the internet successfully (that was just a matter of configuring the IP and GW), and the computers behind it can communicate with it. [EDIT: more info] This is actually an IPv6 block (2800:40:403::0/48) (but I've found that most utilities and instructions can be easily adapted from IPv4 to IPv6 with little hastle). The server has too ports: wan: 2800:40:403::1/48 lan: 2800:40:403::3/48 One of the computers behind it is connected to it via a switch; 2800:40:403::7/48 The wan interface on the server can ping6 www.google.com without issues. The lan interface on the server and the client can mutually ping each other without issues (as well as SSH, etc). I've tried setting the server as a default gateway for the client, with no luck: client # route -A inet6 add default gw 2800:40:403::3 dev eth1 server # cat /proc/sys/net/ipv6/conf/all/forwarding 1 I don't want any filtering/firewalling/etc, just plain routing. Thanks.

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• Excel controls not visible for certain users

  - by Nossidge

  One of the users of an Excel program I've written is having a weird problem. None of the control objects (Command Button, ComboBox, etc.) are visible to him when he opens the file on his laptop. He is using Excel 2003, the same version I used to create the program, and enables macros using the pop-up when the file loads. I have Googled this, and have found these people who seem to be having the exact same problem, with various versions of Excel. Unfortunately, none of their questions were answered. I can't really explain it any better than this user: If I enter design mode and pull a control from the control toolbar onto a sheet all I see are the drag handles. When not in design mode I have to feel around with the mouse and can click the button which executes the button click code correctly and opens another sheet where again I have to feel around for the buttons to return me to the original sheet. The button I managed to click is now visible but as soon as I click anywhere on the sheet it disappears. I have verified that the visible property of the buttons is set and that the Show All Objects on the Options View tab is selected. If I pull buttons from the Forms toolbar onto a sheet they are visible. If I try to find Objects using F5 when not in design mode Excel reports no objects on the sheet. So, Super Users, can you help? UPDATE: Thanks for your replies, but much like the person in the ozgrid link, the problem has gone away. Not sure why it went, but I can confirm that the user rebooted again and also started up other Excel files that didn't contain controls in the interim. Perhaps that fixed it, or maybe it'll be back again. I'll keep udating with progress, and close if the problem doesn't reoccur for the next few days. Thanks again.

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• Cisco AnyConnect VPN client - prevent connecting as work network

  - by Opmet

  From Windows 7 I'm using "Cisco AnyConnect Secure Mobility Client 3.0" to connect to our corporate network. Every time I establish the VPN connection Windows will set the type as "work network". I don't want this. So I go to "network and sharing center" and manually / interactively change it to "public network". But I have to repeat it for every new VPN connection. Is there any way to make Windows remember / persist this configuration? Can it be configured in the VPN client? Do our IT admins need to change something at server end? Motivation: A "work network" per default uses different firewall settings that allows for stuff like "network discovery" and "file shares". But I just need "remote desktop" (mstsc). Additional info: Our IT admins claimed this would be Windows default behaviour and there was nothing we could do about it: Windows would always initiate a VPN connection as "work network". Based on this statement I assume this is a "general" issue and went ahead posting here (at superuser.com).

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• How do I setup routing for two companies with different Internet connections on the same LAN?

  - by Clint Miller

  Here's the setup: Two companies (A & B) share office space and a LAN. A 2nd ISP is brought in and company A wants its own Internet connection (ISP A) and company B wants its own Internet connection (ISP B). VLANs are deployed internally to separate the two companies' networks (company A: VLAN 1, company B: VLAN 2, shared VOIP: VLAN 3). With separate VLANs it's simple enough to use separate DHCP servers (or separate scopes on the same server) to assign the default gateway to each company's gateway for their Internet connection. Static routes can be created on each gateway to point traffic destined for the other company's VLAN or the voice VLAN so that all nodes are reachable as expected. However, I think this is a form of asymmetrical routing, right? (The path from node A1 to node B1 is not the same as the path back from node B1 to node A1). Can I set up policy-based routing to correct this? In that case, can I assign the same default gateway to every device on all VLANs and create a routing policy on a L3 switch to look at the source address and forward traffic to the appropriate next hop? In that case, I want the routing logic to go like this: If the destination address is known, forward the traffic (traffic destined for a different VLAN). If the destination address is unknown, forward the traffic to ISP A's gateway if the source address is on VLAN A; or forward the traffic to ISP B's gateway if the source address is VLAN B. Am I thinking about this problem in the correct way? Is there another way to solve this problem that I am overlooking?

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• Trouble with Remote Desktop pulling through printers. Drive Redirection works, and the ports created but not the printers

  - by Windex

  I've run out of things to look into. All the support documents have been gone through and still provide no resolution. I've checked the service permissions, (sc sdshow spooler) they all match up with other systems and what is output on the support documents. I'm nearly positive that the issue can't be permissions anyway as the software requires all users to be an administrator, so all users are a local administrator. (I haven't looked into why yet but its on the list, I was just recently brought into this team and we've put procedures in place for quick recovery.) We've applied hot fixes relating to RDS and printing, though I'm not sure which ones they were. I've combed through group policy and no where is printer redirection disabled. It's setup with all default values regarding the use and redirection of printers and a quick install of W2k8 R2 shows that it works by default. This dev install was joined to the same domain, placed in the same OU, shows the same policies applied, etc, etc, etc, The server generates all the correct redirected ports but no printers are created. It will also redirect drives without issue, this would seem to rule out the usermode service that handles redirects being broken. No events are logged related to any of the events and there are no events from the TerminalServices-Printer source. There were local printers setup. I didn't think it would mattter but as I was running out of ideas I tried deleting them all with no change. The TS was configured for the software it will be running before we checked out the redirection of printers so the other team responsible to setting up new servers wants to find a fix instead of reloading a new server. I'm not sure where or what else to look for. Any ideas?

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• Windows 7 boot manager not localized on UEFI systems

  - by Massimo

  I originally posted this on SuperUser because I discovered this behaviour on my home computer, but this seems to be a general issue on UEFI systems, thus I'm posting here too; I also hope someone here can shed some light on what's going on. Italian version of Windows 7 x64 SP1, same installation media used for both situations. When running on BIOS systems, the boot manager is fully localized, both for the loading screen and for the F8 boot menu. When running on UEFI systems, the boot manager always runs in English, even if it's correctly configured to use the it-IT locale, as BCDEDIT clearly shows: Windows Boot Manager -------------------- identificatore {bootmgr} device partition=\Device\HarddiskVolume1 path \EFI\Microsoft\Boot\bootmgfw.efi description Windows Boot Manager locale it-IT inherit {globalsettings} default {current} resumeobject {9ef36aa6-4188-11e3-909d-d32f0c3871c8} displayorder {current} toolsdisplayorder {memdiag} timeout 30 Caricatore di avvio di Windows ------------------- identificatore {current} device partition=C: path \Windows\system32\winload.efi description Windows 7 locale it-IT inherit {bootloadersettings} recoverysequence {9ef36aa8-4188-11e3-909d-d32f0c3871c8} recoveryenabled Yes osdevice partition=C: systemroot \Windows resumeobject {9ef36aa6-4188-11e3-909d-d32f0c3871c8} nx OptIn I also noticed something strange here; the motherboard setup shows "Windows Boot Manager" as the main boot option, while the actual boot disk is listed as the second one. Looks like the Windows Boot Manager is actually being loaded from somewhere else than the first partition of the first disk... what's going on here? Update I've also checked the EFI boot manager using bcdedit /enum FIRMWARE. That one looks correctly localized, too: Boot Manager per firmware --------------------- identificatore {fwbootmgr} displayorder {bootmgr} {9ef36aa4-4188-11e3-909d-d32f0c3871c8} {a30e8550-47e4-11e3-9ad1-806e6f6e6963} timeout 1 Windows Boot Manager -------------------- identificatore {bootmgr} device partition=\Device\HarddiskVolume1 path \EFI\Microsoft\Boot\bootmgfw.efi description Windows Boot Manager locale it-IT inherit {globalsettings} default {current} resumeobject {9ef36aa6-4188-11e3-909d-d32f0c3871c8} displayorder {current} toolsdisplayorder {memdiag} timeout 30 Applicazione firmware (101fffff) ------------------------------- identificatore {9ef36aa4-4188-11e3-909d-d32f0c3871c8} description CD/DVD Drive Applicazione firmware (101fffff) ------------------------------- identificatore {a30e8550-47e4-11e3-9ad1-806e6f6e6963} description Hard Drive

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• How to prevent the command prompt from closing after execution?

  - by Sk8erPeter

  My problem is that in Windows, there are command line windows that close immediately after execution. To solve this, I want the default behavior to be that the window is kept open. Normally, this behavior can be avoided with three methods that come to my mind: Putting a pause line after batch programs to prompt the user to press a key before exiting Running these batch files or other command line manipulating tools (even service starting, restarting, etc. with net start xy or anything similar) within cmd.exe(Start - Run - cmd.exe) Running these programs with cmd /k like this: cmd /k myprogram.bat But there are some other cases in which the user: Runs the program the first time and doesn't know that the given program will run in Command Prompt (Windows Command Processor) e.g. when running a shortcut from Start menu (or from somewhere else), OR Finds it a little bit uncomfortable to run cmd.exe all the time and doesn't have the time/opportunity to rewrite the code of these commands everywhere to put a pause after them or avoid exiting explicitly. I've read an article about changing default behavior of cmd.exe when opening it explicitly, with creating an AutoRun entry and manipulating its content in these locations: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Command Processor\AutoRun HKEY_CURRENT_USER\SOFTWARE\Microsoft\Command Processor\AutoRun (The AutoRun items are _String values_...) I put cmd /d /k as a value of it to give it a try, but this didn't change the behaviour of the stuffs mentioned above at all... It just changed the behaviour of the command line window when opening it explicitly (Start-Run-cmd.exe). So how does it work? Can you give me any ideas to solve this problem?

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• stopping fastcgi_cache for php-enabled custom error page

  - by Ian

  Since enabling the fastcgi_cache on my nginx server, my php-enabled custom error page has suddenly stopped working and I'm getting the internal 404 message instead. In nginx.conf: fastcgi_cache_path /var/lib/nginx/fastcgicache levels=1:2 keys_zone=MYCACHE:5m inactive=2h max_size=1g loader_files=1000 loader_threshold=2000; map $http_cookie $no_cache { default 0; ~SESS 1; } fastcgi_cache_key "$scheme$request_method$host$request_uri"; add_header X-My-Cache $upstream_cache_status; map $uri $no_cache_dirs { default 0; ~^/(?:phpMyAdmin|rather|poll|webmail|skewed|blogs|galleries|pixcache) 1; } the cache relevant stuff in my fastcgi.conf: fastcgi_cache MYCACHE; fastcgi_keep_conn on; fastcgi_cache_bypass $no_cache $no_cache_dirs; fastcgi_no_cache $no_cache $no_cache_dirs; fastcgi_cache_valid 200 301 5m; fastcgi_cache_valid 302 5m; fastcgi_cache_valid 404 1m; fastcgi_cache_use_stale error timeout invalid_header updating http_500; fastcgi_ignore_headers Cache-Control Expires; expires epoch; fastcgi_cache_lock on; If I disable the fastcgi_cache, the php-enabled 404 page works as it has for years. How would I disable the cache for the custom error page?

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• Cannot Add Particular Word to Dictionary

  - by WCWedin

  I am trying to add a particular word to my custom dictionary using Word 2007. (The word happens to be "deserialized".) When I right-click on the word and click Add to Dictionary, the red underline does not go away. When I use the Spelling & Grammar tool from the Review tab on the ribbon, it will stop on that word; clicking the Add to Dictionary button has no effect. Oddly, I am able to add other words to the custom dictionary without a problem. I recently added "deserializes", for instance. I have only encountered this problem with that one particular word. Does anyone know what might be wrong and how I might fix it? Clarifications My document and all its content is set to English (United States). My custom dictionary is set to apply to All Languages, which is the default value. "Serialize" is in the US English default dictionary, but "deserialize" and its various forms is not.

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• Why does the Mac OS X firewall dialog recurringly pop-up and disappear by itself (without letting me

  - by Chris W. Rea

  From time to time, I'll be on my Macbook using a program that accesses the network – whether Firefox, or Sony's Reader Library – really, it seems like it could happen with any program that accesses the network – and for no reason that I can discern so far (that is, it happens intermittently) the OS X firewall dialog pops up to ask me the question: Except it doesn't actually let me click anything before it disappears! That is: the dialog pops up, ... then goes away by itself a second later, then pops up again, ... then goes away by itself a second later, etc. It happens a few times before stopping. It wouldn't be so maddening to be interrupted if I could just be allowed to click "Allow" and make the darn thing go away for good. In Security preferences I have the firewall turned "On", and I would like to keep it that way. Has anybody seen this problem, found the source, and figured out a solution or workaround? Thank you.

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• Varnish going sick

  - by junke1990

  I'm having trouble with Varnish, it works for a couple of views and then just goes sick... The weird thing is that it does work for about 20 or 30 requests. If I call apache directly it works fine. I'm running Varnish Version: 3.0.3-1 on Debian Squeeze and, for now, Apache on port 80 and Varnish on port 8080 on the same server.. I'm using https://github.com/mattiasgeniar/varnish-3.0-configuration-templates as base for my VCLs and modified the VCLs to support Concrete5. Anyone any clue on how I should debug this? backend default { .host = "127.0.0.1"; .port = "80"; .connect_timeout = 1.5s; .first_byte_timeout = 45s; .between_bytes_timeout = 30s; .probe = { .url = "/"; .timeout = 1s; .interval = 10s; .window = 10; .threshold = 8; } } LOG 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1353791312 1.0 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1353791315 1.0 0 Backend_health - default Still sick 4--X-R- 0 8 10 0.000689 0.000000 HTTP/1.1 301 Moved Permanently (the 301 is because I check for www.)

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• 3-4 old computers = general purpose cluster?

  - by TheLQ

  I have 3 old computers lying around right now running a P2 at 800 MHz(?), Intel Mobile 1.6 GHz, AMD Athlon XP 2000+ at 1.66 GHz, and (might not use this) P4 at 2.7 GHz, all with 512 MB Ram, and am considering clustering them together for fun/knowledge. They would be running an undecided version of linux, preferably ubuntu based. The issue is what I want to use it for: general computing and occasional video encoding. By general computing I mean day to day tasks. However I'm not sure if every program started by a single X session is going to exist on the same machine, defeating the purpose of such a system. Will programs be split up or exist on one machine? Second, assuming this is running 100baseT ethernet (not sure if the PCI slot itself could handle Gigabit), would the speed of having a program exist over the network be an issue? It seems that the constant asking of various things in RAM would be quite slow. And before you say "buy another computer!", that's not the point of this question. I'm asking would it be usable, not necessarily practical. And yes I know, this is going to be extreamly power consuming.

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• Backing up 80G hard drive 1G per day

  - by barrycarter

  I want to securely backup my 80G HD, but doing a complete backup takes forever and slows down my machine, so I want to backup just 1G per day. Details: % First hurdle: on the first day, I want to backup the "first" 1G of the hard drive. Of course, there really is no "first" 1G on a hard drive. % After 80 days, I'll have my whole HD backed up... assuming none of my files ever change, which of course they do. So the backup plan/program must also catch file creation/changes as they come along. % The backups must be consistent, in that I can restore my system by restoring the backups sequentially. In other words, "dd if=/harddrive" probably won't work. % The backups should encrypt file contents AND names, but I don't see this as a major hurdle. % Once the backup has backed up everything (even changed files), it can re-backup the first 1G on my hard drive. Even though this backup is redundant, that's OK, because I always want to be backing up something (eg, if I'm backing up to optical media, the older media might start going corrupt). Is there a magic backup plan/program that does this? In reality, I want to do this for multiple machines with multiple drives each, but think that solving the above will solve the general case.

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• Route outbound connections from local network through VPN

  - by Sharkos

  I have a server A running OpenVPN, an OpenVPN client B (a rooted Android phone as it happens) and a third party C (a laptop, tablet etc.) tethered to B. B can use the VPN to access the internet via A; C can use the tethered connection WITHOUT the VPN to access the internet via B. However, with the VPN on B active, I cannot load information from the internet on C. A appears to log similar traffic inbound and outbound when B or C attempt to load a webpage, say, but the VPN on device B reports no inbound traffic when the connection originated from C. Where should I look for packets being dropped, and what ip rules should I use to make sure they are passed back through the VPN and into the local network B <- C? (I'll obviously post whatever further information is needed.) Further info Without VPN: root@android:/ # ip route default via [B's External Gateway] dev rmnet0 [B's External Subnet] dev rmnet0 proto kernel scope link src [B's External IP] [B's External Gateway] dev rmnet0 scope link 192.168.43.0/24 dev wlan0 proto kernel scope link src 192.168.43.1 With VPN: root@android:/ # ip route 0.0.0.0/1 dev tun0 scope link default via [B's External Gateway] dev rmnet0 [B's External Subnet] dev rmnet0 proto kernel scope link src [B's External IP] [B's External Gateway] dev rmnet0 scope link [External address of A] dev tun0 scope link 128.0.0.0/1 dev tun0 scope link 172.16.0.0/24 dev tun0 scope link 172.16.0.8/30 dev tun0 proto kernel scope link src 172.16.0.10 192.168.43.0/24 dev wlan0 proto kernel scope link src 192.168.43.1 192.168.168.0/24 dev tun0 scope link

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• Why can't I connect to my home SSH (SFTP) server? What am I doing wrong?

  - by Rolo

  I am new to this topic of creating a SFTP server on one's computer. I would like to be able to access the folder on my Windows XP computer via SFTP from another computer or a phone. The following is what I have done so far: I have installed SSH Windows and everything is setup correctly because I can access it (the folder on my pc) via WinSCP. I however cannot access it from my phone. It doesn't connect. The phone can be on the same wireless network as the Windows XP computer, but I would prefer to be able to access this when not in the same network. Now, from what I have read and understood, the following is the information needed to connect: 1) Host Name: This would be my computer's ip address which I access by typing ipconfig in a cmd prompt (I access this easily on my computer because I simply put in localhost or 127.0.0.1) 2) Port Number: That would be port 22 (I have also added this to my router in the port forwarding section). 3) Username: This would be my Windows XP username. This however is my full name, including my middle initial followed by a period. I am wondering if this is maybe causing problems in accessing it from my phone, since the name has spaces and punctuation (the period). 4) Password: The password of my Windows XP computer Extra Info: When I say phone, I mean an Android phone and I am using an ftp / sftp app to access my pc via the phone's cellular network (I also tried the wireless, but that didn't work as well). I have tried more than one program. On one program it tells me Connection timed out and on another it tells me "timeout:socket is not established" Also, I know that I can use the site noip, but I prefer to connect this way first. Also, because I am new to this, I would like to look into what exactly noip is doing and if they would be seeing my files as they are transferred from phone to pc. Thanking you in advance for your help.

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• DVD/CD burning .zip: is it more reliable, faster, longer lasting to burn a zip of files rather than the files as a folder?

  - by Rob

  Is it more reliable, faster, longer lasting to burn to CD/DVD a zip (or a few large zips) of files rather than the files as a folder? Just thinking if 1000s of small files would not be as efficiently recorded compared with one or a few large zips. Also, even after the burning program verifies the disc, I also use Beyond Compare to compare the files with those on the disc. Always binary compares as identical but I hear the drive stuttering presumably as the head is being shifted only slightly each time to seek the next file, which leads me to think that its best to make one or more zips and copy those locally to compare. Or is it that burning invidual files to the disc is not as readable which causes the head to stutter. There aren't any problems, my disc burns are reliable, just thinking more of efficiency and longevity, the discs burn and verify fast enough on my 18x DVD burner. I'm using ImgBurn mostly. Also used Nero in the past. I burn whole discs closed, finalised. Not sure which write mode but would think Disc At Once from a temporary cached image made by the burning program would be the most reliable.

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