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• Understanding mail failure notices, 554

  - by goran

  I'd like to confirm the meaining of a mail failure notice. Here's the message Hi. This is the qmail-send program at mydomain.com I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <[email protected]>: 1.2.3.4 does not like recipient. Remote host said: 554 <[email protected]>: Relay access denied Giving up on 1.2.3.4 The way I understand this is, that 1.2.3.4 is not setup to receive mail for this domain. dig domain.com MX shows ;; ANSWER SECTION: domain.com. 6245 IN MX 10 mail.domain.com. domain.com. 6245 IN MX 20 mx.anotherdomain.com. (1.2.3.4 is mx.anotherdomain.com.). The puzzling part is that I have reports that messages sent from gmail get delivered to this address. P.S. Is this a proper question for serverfault?

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• Windows, never "lose focus" of the current window

  - by Mazura

  I want the task bar to light up orange and never lose focus to anything. If I'm installing something and then go play a game at some point it will drop out to the finished instillation. Also, if installing multiple programs at once my 'next' button can all of sudden become "click here to install this crappy toolbar" of another program's install. Of course there are settings for some programs to not "lose focus" or "stay on top" but I really want windows to handle it. If its somehow an exe called say, Taskswtich.exe, I could possibly use Process Blocker however I'm assuming its part of a function call or some such. For XP I found this: How to disable auto focus of opened Windows applications? but what about Windows7? And this old post Preventing applications from stealing focus with a bunch of long answers that say "no". I'd appreciate this not being merged with a 4 year old question. I'd like to avoid 3rd party software. This is 2014, don't we know how to hack windows yet?

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• Backup with Mercurial and Robocopy?

  - by Andrew Neely

  The Problem We would like to backup our critical files from several network shares to a removable hard drive. We want to automate the backup so we don't have to remember to run it. It needs to finish overnight. Furthermore, we want to be able to preserve multiple versions of each file so we can back out of our user's mistakes easier. Background Information I work in a large Windows-based enterprise with a centralized IT section who is responsible for all backups. Their backups are geared towards disaster recovery and not user error, and require upper-level management approval for any non-disaster recoveries. Several times we have noticed that our backups have failed, we weren't notified. I do not have administrative rights to the server or my desktop. We are trying to backup some 198,000 files spanning about 240 gigabytes. These files rarely change. Our backup drive is one terabyte. My Proposed Solution What I would like to do is to write a batch file using Robocopy with the /mir option along with Mercurial SCM to store all versions of the file. I would do an hg add followed by an hg commit before each execution of Robocopy to save the current state, and then make a mirrored copy of the file structures. The problem is the /mir will delete every folder not present in the source, and Mercurial stores the repository in a .hg folder in the destination folder. Does anybody know how I could either convince Mercurial to store the .hg folder elsewhere, or convince Robocopy not to delete it from the destination? I'm trying to avoid writing a custom program do to copying.

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• file association in Windows 8

  - by Robith Nuriel Haq

  Associating a file to a program should be easy in Windows. However, i find it rather difficult when I'm working on Windows 8. associating a file to a desktop application that I install on my computer is easy because the whole operation is entirely the same with that in the previous Windows releases. What I find rather difficult is associating a file to a Metro apps that I download from the store. So far, I have been using Multimedia 8 (a metro app) to open my video files. However, this app cannot handle particular files-like *.dat-that can be associated easily to desktop video applications, such as media player classic and the like. When I try to associate my DAT files to Multimedia 8, there is indeed a "look for another app on this PC" option at the bottom of the "open with" pop up. But alas, I cannot figure out how to locate my Multimedia 8 app to which I want to associate my DAT file (as well as other video files that are not yet associated to this metro app). If anyone of you knows how to locate those metro apps, please tell me. many thanks

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• Linux Scheduler (not using all cores on multi-core machine) RHEL6

  - by User512

  I'm seeing strange behavior on one of my servers (running RHEL 6). There seems to be something wrong with the scheduler. Here's the test program I'm using: #include <stdio.h> #include <unistd.h> #include <stdlib.h> void RunClient(int i) { printf("Starting client %d\n", i); while (true) { } } int main(int argc, char** argv) { for (int i = 0; i < 4; ++i) { pid_t p_id = fork(); if (p_id == -1) { perror("fork"); } else if (p_id == 0) { RunClient(i); exit(0); } } return 0; } This machine has a lot more than 4 cores so we'd expect all processes to be running at 100%. When I check on top, the cpu usage varies. Sometimes it's split (100%, 33%, 33%, 33%), other times it's split (100%, 100%, 50%, 50%). When I try this test on another server of ours (running RHEL 5), there are no issues (it's 100%, 100%, 100%, 100%) as expected. What's causing this and how can I fix it? Thanks

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• DansGuardian/Squid Traffic doesn't get back to user

  - by DKNUCKLES

  I've purchased a Squid appliance that I'm attempting to implement, however the lack of documentation has left me a bit high and dry. Forgive me if this is a silly question, but this is my first attempt at implementing Squid. From what I can ascertain from the documentation (or lack thereof), the users connect to DansGuardian first at port 8080 where the filtering is done, at which point it forwards it to the Squid appliance at port 3128. The traffic is then sent to the internet. The setup I have is as follows Gateway (MikroTik router) : 192.168.88.1 Squid/DansGuardian :192.168.88.100 Client : 192.168.88.238 Client --- Gateway --- Proxy --- Internet I have set up a simple NAT rule to forward all traffic from the client machine (for testing purposes) to go to the DansGuardian. The traffic seems to get there, although I see a lot of SYN_RECV w/ a netstat -antp command on the virtual appliance machine. From this I gather that the traffic is NOT being routed back to the client machine. Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN - tcp 0 0 192.168.88.100:8080 192.168.88.238:55786 SYN_RECV - tcp 0 0 192.168.88.100:8080 192.168.88.238:55787 SYN_RECV - tcp 0 0 192.168.88.100:8080 192.168.88.238:55785 SYN_RECV - tcp 0 0 192.168.88.100:8080 192.168.88.238:55788 SYN_RECV - tcp 0 0 0.0.0.0:10000 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN - Is this a routing issue or an issue with the Squid Appliance?

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• Safe place to put an executable file on Windows 7 (and Windows XP)

  - by Ricket

  I'm working on a tweak to our logon script which will copy an executable file to the local hard drive and then, using the schtasks command, schedule a task to run that executable daily. It's a standalone executable file, and when run it creates a folder in the working directory (which would be the same directory as the executable in this case). In Windows XP, of course, it can be put anywhere - I'd probably just throw it in C:\SomeRandomFolder and let it be. But this logon script also runs on Windows 7 64-bit machines, and those are trickier with UAC and all that. The user is a local administrator but UAC is enabled, so I'm pretty sure that the executable would be blocked from copying to a location like C:\ or C:\Program Files (since those seem to be at least mildly protected by UAC). The scheduled task needs to run under the user's profile, so I can't just run it with SYSTEM and ignore the UAC boundaries; I need to find a path which the user can copy into. Where can I copy this standalone executable file, so that the copy operation succeeds without a UAC prompt on Windows 7, the path is either common to both WinXP and Win7 or uses environment variables, and the scheduled task running with user permissions is able to launch the executable?

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• Increasing Java's heapspace in Tomcat startup script

  - by Ankur

  I want to increase my heap size when using Tomcat. I was told to add this line export CATALINA_OPTS=-Xms16m -Xmx256m; In to the startup.sh script - I did so (at the beginning) but got the error export: 24: -Xmx256m: bad variable name Where am I supposed to add it, am I doing something else wrong? <b>export CATALINA_OPTS=-Xms16m -Xmx256m;</b> # Better OS/400 detection: see Bugzilla 31132 os400=false darwin=false case "`uname`" in CYGWIN*) cygwin=true;; OS400*) os400=true;; Darwin*) darwin=true;; esac # resolve links - $0 may be a softlink PRG="$0" while [ -h "$PRG" ] ; do ls=`ls -ld "$PRG"` link=`expr "$ls" : '.*-> \(.*\)$'` if expr "$link" : '/.*' > /dev/null; then PRG="$link" else PRG=`dirname "$PRG"`/"$link" fi done PRGDIR=`dirname "$PRG"` EXECUTABLE=catalina.sh # Check that target executable exists if $os400; then # -x will Only work on the os400 if the files are: # 1. owned by the user # 2. owned by the PRIMARY group of the user # this will not work if the user belongs in secondary groups eval else if [ ! -x "$PRGDIR"/"$EXECUTABLE" ]; then echo "Cannot find $PRGDIR/$EXECUTABLE" echo "This file is needed to run this program" exit 1 fi fi exec "$PRGDIR"/"$EXECUTABLE" start "$@"

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• Font for Wine that supports the entire character set of the Win32 Console?

  - by Brian Campbell

  I would like to be able to display in the Wine console all characters that the Win32 console can display. I've written a small test program to print out all 8-bit characters: #include <stdio.h> int main(int argc, char *argv[]) { int i, j; for (i = 0; i <= 0xF0; i+=0x10) { for (j = i; j <= i + 0x0F; ++j) printf("%2x:%c", j, (char)j); printf("\n"); } getchar(); return 0; } Under Wine, the best I can do so far is using Andale Mono: While this is what I see on Windows Server 2008: Is there anywhere I can legally download a font that will allow me to view all of those characters under Wine? edit I've found a set of DOS fonts that includes a CP437 font, which should cover the character set I'm interested in. However, even if I install this font, wineconsole doesn't seem to recognize it. Is there any way I can get wineconsole to use this font, or convert this font to a format that wineconsole can use? Or is there any way I can extract fonts from DOSEMU for use in Wine? Oh, and I should probably mention that I'm on Mac OS X 10.6.2, installing Wine via MacPorts, using the wine-devel package. more information I have tried installing some console fonts that should cover the full character set as Mac OS X fonts (such as the NewDOS font listed above, and a font I tried converting from the fonts supplied by DOSEMU). Wine does not seem to pick up on new fonts installed in Mac OS X. Is there a way to register new fonts I've installed with Wine? Would manually editing the system.reg file that seems to contain font mappings work, or is there something else I'd need to do? bump Bounty ends soon, I'm still looking for an answer for this. Does anyone use the Wine console for complex text user interfaces?

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• How to send T.38 from a mac?

  - by Brian Postow

  I'm trying to set up a fax-server on a macintosh. I have Hylafax, and we're going to use an internet FOIP fax provider (Haven't decided who yet, that may be another question). The problem is how to get from Hylafax to T.38. I know of two options, but I'm not sure how to decide between them: T38modem Advantages: It's only one extra program, and i know that I can compile it for the Mac. (well, At least I can get the H323 version working on a Mac) Disadvantages: It is mostly undocumented and seems to be supported only by one guy in Russia. IAXModem/Asterisk Advantages: It's well known, and well supported. We can pay for support. It presumably does the T38 with SIP correctly, so we don't have to worry about it. Disadvantages: It's two separate programs. While I know how to get Asterisk on a mac, I'm not sure about IAXModem. (It's sourceforge, and linux, but compiling things for a mac isn't always straight forward...) It's also mostly undocumented. Do these seem like an accurate listing of the pros/cons? Anyone have any other suggestions? thanks.

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• firefox addon f@stestfox API sending/collecting data?

  - by Richard

  System: ubuntu64/firefox24.0 object: addon "f@stestfox". Its a nice in-browser search tool and more. Problematic: is the way the program handles the search queries. when I use a search shortcut, burpsuite says: request to msgs.smarterfox.com: 80 GET /log_msg?name=popup_bubble_searched&search_engine_title=Search%20Startpage&source=FastestFox&redirect_to=https%3A%2F%2Fstartpage.com%2Fdo%2Fsearch%3Fcmd%3Dprocess_search%26cat%3Dweb%26query%3Dnginx%26language%3Denglish%26no_sugg%3D1%26ff%3D%26abp%3D-1&rand=856827465 HTTP/1.1 Host: msgs.smarterfox.com User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) Accept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Connection: keep-alive once I saw a unique identifier (installation time?) was send with the request to the server. Am I right, that the addon sends the website I am looking at to the server? Sometimes I only mark text(ip adress or link) and the addon send this data? seriosly? I did: search for the url in the code, but I dont speak java. And I am not sure, if the data from the request can actually be used for tracking :) question: I want the awesome features of the addon, without connecting to their server: marked text should be send only to the searchmachines. what should I do next? thank you.

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• uWSGI cannot find "application" using Flask and Virtualenv

  - by skyler

  Using uWSGI to serve a simple wsgi app, (a simple "Hello, World") my configuration works, but when I try to run a Flask app, I get this in uWSGI's error logs: current working directory: /opt/python-env/coefficient/lib/python2.6/site-packages writing pidfile to /var/run/uwsgi.pid detected binary path: /opt/uwsgi/uwsgi setuid() to 497 your memory page size is 4096 bytes detected max file descriptor number: 1024 lock engine: pthread robust mutexes uwsgi socket 0 bound to TCP address 127.0.0.1:3031 fd 3 Python version: 2.6.6 (r266:84292, Jun 18 2012, 14:18:47) [GCC 4.4.6 20110731 (Red Hat 4.4.6-3)] Set PythonHome to /opt/python-env/coefficient/ *** Python threads support is disabled. You can enable it with --enable-threads *** Python main interpreter initialized at 0xbed3b0 your server socket listen backlog is limited to 100 connections *** Operational MODE: single process *** added /opt/python-env/coefficient/lib/python2.6/site-packages/ to pythonpath. unable to find "application" callable in file /var/www/coefficient/flask.py unable to load app 0 (mountpoint='') (callable not found or import error) *** no app loaded. going in full dynamic mode *** *** uWSGI is running in multiple interpreter mode ***` Note in particular this part of the log: unable to find "application" callable in file /var/www/coefficient/flask.py unable to load app 0 (mountpoint='') (callable not found or import error) **no app loaded. going in full dynamic mode** This is my Flask app: from flask import Flask app = Flask(__name__) @app.route("/") def hello(): return "Hello, World, from Flask!" Before I added my Virtualenv's pythonpath to my configuration file, I was getting an ImportError for Flask. I solved this though, I believe (I'm not receiving errors about it anymore) and here is my complete configuration file: uwsgi: #socket: /tmp/uwsgi.sock socket: 127.0.0.1:3031 daemonize: /var/log/uwsgi.log pidfile: /var/run/uwsgi.pid master: true vacuum: true #wsgi-file: /var/www/coefficient/coefficient.py wsgi-file: /var/www/coefficient/flask.py processes: 1 virtualenv: /opt/python-env/coefficient/ pythonpath: /opt/python-env/coefficient/lib/python2.6/site-packages This is how I start uWSGI, from an rc script: /opt/uwsgi/uwsgi --yaml /etc/uwsgi/conf.yaml --uid uwsgi And if I try to view the Flask program in a browser, I get this: **uWSGI Error** Python application not found Any help is appreciated.

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• How to create RPM for 32-bit arch from a 64-bit arch server?

  - by Gnanam

  Our production server is running CentOS5 64-bit arch. Because there are no RPM available currently for SQLite latest version (v3.7.3), I created RPM using rpmbuild the very first time by following the instructions given here. I was able to successfully create RPM for 64-bit (x86_64) architecture. But am not able to create RPM for 32-bit (i386) architecture. It failed with the following errors: ... ... ... + ./configure --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --enable-threadsafe checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... gawk checking whether make sets $(MAKE)... yes checking for style of include used by make... GNU checking for x86_64-redhat-linux-gnu-gcc... no checking for gcc... gcc checking for C compiler default output file name... configure: error: C compiler cannot create executables See `config.log' for more details. error: Bad exit status from /var/tmp/rpm-tmp.73141 (%build) RPM build errors: Bad exit status from /var/tmp/rpm-tmp.73141 (%build) This is the command I called: rpmbuild --target i386 -ba sqlite.spec My question is, how do I create RPM for 32-bit arch from a 64-bit arch server?

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• Is there any special way to force GoBack to work with Windows Vista and 7?

  - by dfree

  Norton/Roxio's GoBack doesn't work with Vista/7 for reasons unknown. I have tried several alternatives (Norton Ghost, RollbackRX, Norton Save and Restore), none of which offer the same functionality as GoBack. Not only does GoBack not eat up all your hard drive space while creating a legitimate fail safe for any pc problems, it also allows you to see ACTIVELY EXACTLY WHAT PROCESS ARE BEING EXECUTED ON YOUR COMPUTER. This feature (called Advanced Disk Drive Restore) also allows you to troubleshoot problems and determine causes for things in about half a second by seeing what is happening on your machine. It's how I learned everything I know about computers. GoBack also features something called Safe Try Mode where you can put it in SafeTry and then mess up the whole computer and when you come out of it, your computer will be exactly how it was before. Amazing for people who like to tinker without risking their machine stability. It also helps for that accidentally erased paper or whatever you may have erased. I believe GoBack installs a type44 partition around the drive, which loads prior to windows to allow this functionality. If you're going to recommend another program, please don't (unless it does all of the above). I've tried all the competition and nothing is as good. I just want my GoBack to work with 7 :) Any ideas of crazy ways to make this work?

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• Alternatives to ntbackup

  - by Chris J

  Is anyone aware of any good (for a given value of "good") alternatives to ntbackup? There's a few quirks with ntbackup that I still find odd, and occasionally (and for no obvious reason) ntbackup just doesn't back up - usually complaining about that the wrong tape's inserted even though it's been told to just use the tape that's in the drive regardless. I've experiemented with cygwin's tar and cpio and Win32 ports of these utilities, but I've not had any luck getting them to see the tape device (so if someone does use these utilities to write to a tape device, also be interested to know how). Essentially all I'm looking for is a reliable program that I can tell to back-up a list of locations to the tape, and not to care about anything like formatting tapes, or sticking volume labels on them (and conversely then makes it fairly straightforward to restore off as well). On the flip-side, I don't want something that will attempt to manage our tapes. Don't get me wrong here -- ntbackup can do the job, but its quirks are making look at possible alternatives. Any suggestions? If it's open source, even better.

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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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• Vista gets stuck in an endless loop while booting

  - by Mason Wheeler

  I put my laptop to sleep last night, and when I woke up this morning... it didn't. So I tried to reboot, and everything went fine until it got to the Vista splash screen, where it's supposed to display the logon. Here, it hits an endless loop: Display the cursor with the blue spinny thing that replaced the hourglass, for 5-10 seconds Display "Please wait..." for about half a second Screen flashes to black, then quickly back to the Vista splash screen Goto step 1 The whole time, my hard LED is on almost non-stop. I can boot into Safe Mode... sometimes. Sometimes it'll load all the drivers, then sit there for about 10 minutes, spinning the hard drive non-stop, then reboot with no warning. I tried booting to Last Known Good Configuration. Didn't fix anything. When I've managed to get into Safe Mode, I tried running CHKDSK. Didn't fix anything. I tried running System Restore to each of my last two restore points. Didn't fix anything either time. I ran a virus scan. Didn't find anything. I tried calling the manufacturer (Alienware), only to discover that my warranty expired last freaking week and now I can't get it fixed without paying exorbitant sums of money. I'm about at my wits' end here. Has anyone seen this problem before? Does anyone know how to fix it? Does anyone know a solution that does not involve reinstalling the OS and losing an entire year's worth of program installations, Windows Updates and configuring and tweaking things until it's working just like I want it to?

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• File corruption after copying files in Windows 7 64 bit using two methods

  - by DustByte

  I have 5000 pictures and other files in a directory taking up 35 GB. I want to duplicate this directory. Method 1: I do a simple copy and paste of the directory in explorer. I have the habit of checking the checksums after copying important files. In this case I noticed that around 2000 files failed the MD5 test. At a closer inspection of a randomly chosen JPEG with different checksums it turns out that some XMP metadata had changed. In particular, the tag <MicrosoftPhoto:DateAcquired> had changed the date from 2009 to today (possibly around the time I was copying the files). I have no idea what triggered this XMP data to be changed and exactly when it was changed and why for these particular files, but at least it seems to explain the checksum discrepancy. Method 2: As I want the exact files to be duplicated, I tried the program FreeFileSync to mirror the directory, hoping no XMP metadata would mysteriously change. A checksum test in addition to a thorough file comparison test in FreeFileSync lead to two similar but yet different results: 31 files fail the checksum test, 23 files fail the file comparison test. The smaller set is not entirely contained in the bigger set, although many files occur in both. What is alarming here is that not only JPEGs are flagged as altered but also som AVIs, MPGs and a large 7-zip file. Closer inspection of a JPEG indicates that it is indeed corrupt: the bottom half of the picture is simply plain gray. Due to the size of the 7-zip file, I have not been able to pin down the discrepancy. Note, in both methods, every file has its correct file size after being copied. Question: Any thoughts on what is possibly going on here? I have never had this problem before, and I am now terrified that files get corrupted after simple actions like copy/paste and file sync. Even if I manage to successfully copy the files somehow, I would still like an explanation to this.

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• Winamp question: Generating 'dynamic playlists' from file playlists -OR- mass-tagging by file playli

  - by Daddy Warbox

  I'm trying to think of a way to do this. I sort my songs into a variety of playlists corresponding to different 'moods' I might have as I listen to them, and some songs fit for more than one kind of mood (e.g. a jazz song might be 'stylish' and 'emotional', or something to that effect). I also give them star ratings for a general sort of opinion about them. I want to be able to filter and sort my media library by the moods I want or don't want, as well as by star rating. Anyone have a good way to do something like this? I can't seem to use Winamp's dynamic playlists to generate lists from existing filesystem playlists (e.g. songs in a given .m3u files). Hand-tagging files with Winamp's tag editor is a royal pain. It's trouble enough just giving a star rating and sorting into playlists as is. If there is there a way to mass tag songs within each playlist with mood words to allow me to create dynamic playlists, I'd be fine (for now). It'd be nice if I could do this via some kind of hotkey for each song, too. I'm looking to see if I can use a macro program or something to do that, though. Thanks in advance. P.S: Alternatively, would something like Foobar have functions like this? Note: Italics are recent edits.

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• hardlinking takes a lot of space

  - by mr_schlomo

  I made an rsync incremental backup script for my server that will copy a MySQL database backup and a specified folder path to a remote server. Here's the code on Github. Code excerpt from lines 53-57: ############### Create most current hand link echo "Creating most current hard link on backup server $most_recent_backup_link" ssh $remote_backup_server rm -rf ${most_recent_backup_link} ssh $remote_backup_server cp -alv ${remote_backup_folder}/backup-${backup_folder_name}/ ${most_recent_backup_link} I'm having a problem with creating the most current hard links on the backup server (lines 53-57 in the program). Everything works, and rsync only copies about 1-2MB of data. But the hard link copy process uses about 30MB of data. I get a huge laundry list of files that haven't changed and the only ones that have changed are very small in size. Normally this isn't a problem, but when you backup every hour, the backup should be as small as possible. For example, the last backup I did, rsync transferred 1.3MB. But the backup directory grew 35MB. Why are the hard links taking up so much hard drive space?

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• CryptSvc not matched by Windows 7 Firewall rule

  - by theultramage

  I am using Windows Firewall in conjunction with a third-party tool to get notified about new outbound connection attempts (Windows Firewall Notifier or Windows Firewall Control). The way these tools do it is by setting the firewall to deny by default, and to add an auditing policy to log blocked connections into the Security event log. Then they watch the log, and display notification about newly added entries. netsh advfirewall set allprofiles firewallpolicy blockinbound,blockoutbound auditpol /set /subcategory:{0CCE9226-69AE-11D9-BED3-505054503030} /failure:enable With this configuration in place, I now need to craft outbound allow rules for applications and system services. Here is the rule for CryptSvc, the service frequently used for certificate validation and revocation checking: netsh advfirewall firewall add rule name="Windows Cryptographic Services" action=allow enable=yes profile=any program="%SystemRoot%\system32\svchost.exe" service="CryptSvc" dir=out protocol=tcp remoteport=80,443 The problem is, this rule does not work. Unless I change the scope to "all programs and services" (which is really unhealthy), connection denied events like the following will keep appearing in the security log: Event 5157, Microsoft Windows security auditing. The Windows Filtering Platform has blocked a connection. Application Information: Process ID: 1476 (<- svchost.exe with CryptSvc and nothing else) Application Name: \device\harddiskvolume1\windows\system32\svchost.exe Network Information: Direction: Outbound Source Address: 192.168.0.1 Source Port: 49616 Destination Address: 2.16.52.16 Destination Port: 80 Protocol: 6 (<- TCP) To make sure it's CryptSvc, I have let the connection through and reviewed its traffic; I also configured CryptSvc to run in its own svchost instance to make it more obvious: ;sc config CryptSvc type= share sc config CryptSvc type= own So... why is it not matching the firewall rule, and how to fix that?

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• URL sniffer/downloader

  - by Ricket

  Some websites have Flash content that plays music or videos. Most of the time they don't show you the URL of these music or videos, but for example, you can sniff a YouTube webpage and find the flv file that YouTube is actually requesting and playing. Right now I'm using Orbit Downloader, which has a feature called Grab++ that does just this; you start it, and then you refresh the page, and it shows you all files of certain types (image, audio, video) that the webpage requests, and then you can select one or more and download and it downloads them. But, I don't like Orbit, it installs plugins and has the whole download manager thing which I don't really want. What is a good alternative program? I'm not looking for websites like kickyoutube.com, I want a URL sniffer I guess. HTTPGuideDog used to be my Firefox add-on that did exactly this, but it hasn't been updated even to FF3 (and yes I know I can hack it to load anyway, I'm looking for something natively available preferably). I vaguely know of WireShark but last time I used it, I believe it captures individual packets, which is a little too fine-tuned for me. I just want to be able to see what's happening, and download something that the webpage downloaded. Oh, and I'm using Windows 7. Linux probably has some fancy command-line tool, but it just won't cut it for me. :-\ Edit: Oh, and something free please. Feel free to mention paid solutions though.

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• How to create btrfs RAID-1 filesystem (assertion error in mkfs.btrfs)?

  - by amcnabb

  I tried to make a btrfs RAID-1 filesystem in "degraded mode" by following the btrfs UseCases instructions but hit a fatal assertion error. Why is this failing, and is there any workaround? The instructions I followed are at: https://btrfs.wiki.kernel.org/articles/u/s/e/UseCases_8bd8.html The output of the mkfs.btrfs and btrfs filesystem show commands is: # mkfs.btrfs -m raid1 -d raid1 /dev/sdd1 /dev/loop1 WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before using failed to read /dev/sr0 adding device /dev/loop1 id 2 mkfs.btrfs: volumes.c:802: btrfs_alloc_chunk: Assertion `!(ret)' failed. zsh: abort (core dumped) mkfs.btrfs -m raid1 -d raid1 /dev/sdd1 /dev/loop1 # btrfs filesystem show failed to read /dev/sr0 Label: none uuid: 773908b8-acca-4c30-85c5-6642b06de22b Total devices 1 FS bytes used 28.00KB devid 1 size 223.13GB used 2.04GB path /dev/sda5 Label: none uuid: 0f06f1a8-5f5f-4b92-a55c-b827bcbcc840 Total devices 2 FS bytes used 24.00KB devid 2 size 2.00GB used 0.00 path /dev/loop1 devid 1 size 1.36TB used 20.00MB path /dev/sdd1 Btrfs Btrfs v0.19 # EDIT: It turns out that the filesystem isn't mountable: # mount /dev/sdd1 /mnt/big2 mount: wrong fs type, bad option, bad superblock on /dev/sdd1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so # So, why did the mkfs fail, and is there any workaround?

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• Swapping Function (Fn) and Control (Ctrl) Keys on Lenovo ThinkPad W500

  - by Howiecamp

  I'd like to swap the Fn and Ctrl keys on my ThinkPad W500 (like many others!). I wanted to comment on http://superuser.com/questions/35228/how-can-i-switch-the-function-and-control-keys-on-my-laptop and StackOverflow question 514781 (please Google it because I don't have enough rep to include 2 hyperlinks) but I don't have enough rep to do so to comment. Numerous folks (in both the above questions and on other Google searches) indicate that Windows doesn't register the Fn key as a keypress but using a tool that gives the ASCII value of a keypress (visit www mihov com / eng / am.html) I see the Fn key returning FF (perhaps FF in this case means 'not registered'). I also see that keys like Ctrl register with one ASCII code when pressed alone and another when pressed in combo with another key. Fn will only register when pressed alone, so Windows definitely isn't seeing the combo. This took a solution like AutoHotKey off the table. I ran KeyTweak (which shows you the hardware scan codes of a keypress and the Fn key registerd as 57443). Using this program I remapped Fn to the Ctrl key; this worked perfectly. However, I suspect that because of the issue in #1, the combo of, for example, Fn + C did not execute a copy. Short of retraining my pinky I'm actually considering removing the keyboard and resoldering the connections to swap those keys. I'd love to get some input as to the root technical issue(s) and possible solutions here. Thanks

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• debian VM refusing all traffic apart from http

  - by james lewis

  I've got a VM with a fresh install of Debian (wheezy) and I've installed node and mongo on it. The VM is using a bridged network connection so I was expecting to be able to point my host machines browser at the ip address of the Debian VM (port 1337 for my node example or port 28017 for my mongo status page) and see one of the two services (node or mongo). My requests are refused though. As far as I can tell Debian allows all traffic by default and you have to manually configure iptables to drop traffic. I've checked iptables and it says it's setup to allow anything through. It looks like this: root@devbox:/home/jlewis# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination As a test I setup nginx and I was able to get to the nginx landing page from my host no problems so obviously http traffic is allowed. I then set nginx up to forward all traffic upstream to mongo - no problems there, I was able to see the status page. I then did the same for my example node server and again, no problems. So http traffic is fine, but all other traffic is blocked. Anyone know why debian might be refusing all other traffic other than iptables being setup to drop it? EDIT - output from netstat -nltp: Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.1:28017 0.0.0.0:* LISTEN 1762/mongod tcp 0 0 0.0.0.0:51028 0.0.0.0:* LISTEN 1541/rpc.statd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2462/sshd tcp 0 0 127.0.0.1:1337 0.0.0.0:* LISTEN 2794/node tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2274/exim4 tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 1762/mongod tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1510/rpcbind tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 2189/nginx tcp6 0 0 :::22 :::* LISTEN 2462/sshd tcp6 0 0 :::45335 :::* LISTEN 1541/rpc.statd tcp6 0 0 ::1:25 :::* LISTEN 2274/exim4 tcp6 0 0 :::111 :::* LISTEN 1510/rpcbind

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