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  • None of my bash commands work

    - by Kevin
    I have an Ubuntu 9.10 netbook. I has always run great. Two days ago, I was running as root for a while (~30), and when I moved back to my user account (only other account one this machine), all the commands in ~/bin stopped working. If I try ls, it comes up with "cannot execute binary file". Same with ln, mv, mkdir, clear, cp, etc. They all run as root(which makes sense, different files), but I have no idea why this happened. I don't want to stay as root to move around easily. Any idea?

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  • 2 HP Procurve 4000M switches and Comcast SMC Gateway

    - by Cole Tierney
    We've got 2 HP Procurve 4000M switches joined by a trunk. Switch 1 is connected to a Cisco 2600 router which is connected to a T1. Internet traffic for hosts on switch 2 must pass through the trunk to switch 1. We're now switching to Comcast who's given us 4 port SMC router. I would like to connect each switch to the comcast router to reduce traffic on the trunk, but I don't want to create a loop. The switches support spanning tree protocol, but I don't know how this would work with the comcast router. Would a triangle network like this work? Thanks for any tips.

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  • The best cross platform (portable) arbitrary precision math library

    - by Siu Ching Pong - Asuka Kenji
    Dear ninjas / hackers / wizards, I'm looking for a good arbitrary precision math library in C or C++. Could you please give me some advices / suggestions? The primary requirements: It MUST handle arbitrarily big integers (my primary interest is on integers). In case that you don't know what the word arbitrarily big means, imagine something like 100000! (the factorial of 100000). The precision MUST NOT NEED to be specified during library initialization / object creation. The precision should ONLY be constrained by the available resources of the system. It SHOULD utilize the full power of the platform, and should handle "small" numbers natively. That means on a 64-bit platform, calculating 2^33 + 2^32 should use the available 64-bit CPU instructions. The library SHOULD NOT calculate this in the same way as it does with 2^66 + 2^65 on the same platform. It MUST handle addition (+), subtraction (-), multiplication (*), integer division (/), remainder (%), power (**), increment (++), decrement (--), gcd(), factorial(), and other common integer arithmetic calculations efficiently. Ability to handle functions like sqrt() (square root), log() (logarithm) that do not produce integer results is a plus. Ability to handle symbolic computations is even better. Here are what I found so far: Java's BigInteger and BigDecimal class: I have been using these so far. I have read the source code, but I don't understand the math underneath. It may be based on theories / algorithms that I have never learnt. The built-in integer type or in core libraries of bc / Python / Ruby / Haskell / Lisp / Erlang / OCaml / PHP / some other languages: I have ever used some of these, but I have no idea on which library they are using, or which kind of implementation they are using. What I have already known: Using a char as a decimal digit, and a char* as a decimal string and do calculations on the digits using a for-loop. Using an int (or a long int, or a long long) as a basic "unit" and an array of it as an arbitrary long integer, and do calculations on the elements using a for-loop. Booth's multiplication algorithm What I don't know: Printing the binary array mentioned above in decimal without using naive methods. Example of a naive method: (1) add the bits from the lowest to the highest: 1, 2, 4, 8, 16, 32, ... (2) use a char* string mentioned above to store the intermediate decimal results). What I appreciate: Good comparisons on GMP, MPFR, decNumber (or other libraries that are good in your opinion). Good suggestions on books / articles that I should read. For example, an illustration with figures on how a un-naive arbitrarily long binary to decimal conversion algorithm works is good. Any help. Please DO NOT answer this question if: you think using a double (or a long double, or a long long double) can solve this problem easily. If you do think so, it means that you don't understand the issue under discussion. you have no experience on arbitrary precision mathematics. Thank you in advance! Asuka Kenji

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  • Detect (and remove) non-ascii characters from files

    - by Mawg
    Something similar to this question, but that ended up with a programming answer. I am looking for a ready-made Windows application to recurse a directory tree and .. at the very least, notify me of all files which contain non-ascii characters It would be nice if it would also do any of the following (in no particular order) Let me specify which file extensions to scan Show the file contents, with the non-ascii characters highlighted Automagically remove such characters, or ... Let me launch an editor to remove them manually Know you of such a best? Thanks a 1,000,000 in advance

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  • Share an ATI Catalyst Profile across several/all users

    - by CJM
    We've set up some hotkeys in the ATI Catalyst Control Panel on a communal machine, and we're trying to share this among a number of users, possibly all users. The profile is stored as MyProfile.xml in the Local Settings tree; the profile can be loaded through a shortcut, but unfortunately the Profilename switch simply expects the name of the profile rather than the path to the XML file. And while we can copy the profile to appropriate folders under other users accounts, the mere presence of the XML isn't enough to make the profile available to the user. A quick scan of the registry didn't reveal much, though I suspect there is something in there to be aware of. Any ideas on how we can share this profile?

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  • Removing Eclipse completely

    - by Abhishek Bhandari
    I had an Eclipse - Galileo working fine . Suddenly it started to hang till death(eclipse crashes) when I tried to open a DB2 table form DbViewer Plugin's Db tree View . I tried many stuffs , replacing DbViewer plugin and other memory stuffs . This happens only with DBViewer. So I unziped another eclipse in another directory . But it opens the same settings,plugins and workspace of the previous eclipse .I removed the previous eclipse even the same problem exists. In simple word. How to remove eclipse completely from Windows 7?

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  • Monitoring IIS with SNMP

    - by Shtong
    Hello, I'm trying to monitor IIS using the Windows integrated SNMP service (for versions 2000, 2003 ans 2008 of Windows Server, but i'm doing my experiments on a 2008 R2 box). So far I was able to install the SNMP service, and query mib-2 values without problems. Now, I'm having trouble to monitor IIS informations, as the SNMP service does not seem to know about the .iso.org.dod.internet.private.enterprises.microsoft.software.internetServer OIDs. Walking the entire SNMP tree only gets the mib-2 stuff as well as the names of some services, but that's it. I did't find anything interesting in the service configuration panel. So how do I configure this service to get IIS information, or other WMI data for that matter (I installed the SNMP WMI Provider) ? I can't find any documentation about that !

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  • Samba networking with a domain-joined computer

    - by MCS
    I have two computers connected to the same linksys router - one running Ubuntu 8.04 and one running Windows 7. The Windows computer is part of a work domain (when connected via VPN). I'm trying to also create a home network so I can access the linux server from Windows. From what I understand, I have to first create a Windows workgroup and then configure Samba on linux to join the Windows network. So in Windows, I went to Control Panel - Network and Internet - HomeGroup and got the following message: There is currently no homegroup on your network. Because this computer also belongs to a domain, you can't create your own homegroup, but can join one created by someone on your network. Can I use Samba to create a homegroup? Is there any other way to create a Windows workgroup? Or am I barking up the wrong tree completely?

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  • How a password is transmited to AD Server

    - by erdogany
    My question is how ADSI performs SetPassword operation. According to what I have read ADSI is a COM interface and it has more capabilities than AD provides through LDAP. While you are suppose to update unicodePwd attribute of a personaccount entity through LDAP, ADSI provides you SetPassword call. I know that ADSI & AD provides Kerberos during authentication. So how the password is transmitted to server when SetPassword is called? Is it raw binary unencrypted data? Or does Kerberos comes into play at this call?

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  • How to change GUI language in Outlook 2007

    - by user1466
    A new guy at work moved in from Denmark, which means that he initially logged in to our Outlook Web Access 2007 from a computer with Danish Windows. As a result, all the objects in the tree-view in Outlook are now in Danish. For example, "Inbox" is called "Indbakke". This prevails, even though he has now logged in locally on his assigned work computer which has English Windows. We're running Exchange 2003, if that matters. How do you change the language of the names of the objects in Outlook 2007? The "Microsoft Office 2007 Language Settings" tool doesn't do this, and I couldn't find anything relevant to this by googling either. In Exchange System Manager there are the "Details Templates" which define these things in different languages, but over on his mailbox there was no configuration option to change which language to use.

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  • Random flickering on 2.6.32 kernels after suspend

    - by whitequark
    I have XUbuntu 9.10 installed on a Toshiba NB200 netbook with Intel video card that's handled with i915 driver. With 2.6.31 stable, recommended kernel everything but WiFi works fine: Atheros ath9k WiFi shows too small signal power and loses packets in 'bursts' sometimes. With 2.6.32-* (I tested -9 to -11 from Ubuntu's kernel unstable ppa) everything works fine just prior to first suspend: echo mem >/sys/power/state. After it random unidentified fullscreen 'one-frame' flickering begins in Xorg, and after a couple of minutes everything eventually hangs while showing filled grey (not white; it is like default button colour) screen; no X keys are working: Ctrl+Alt+Fn don't, blind typing in console too. Magic SysRq still works and I was able to reboot. Also there is one out-of-tree kernel module called omnibook that is required to turn on WiFi and Bluetooth. Any advices?

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  • apache2: Require valid-user for everything except "special_page"

    - by matt wilkie
    With Apache2 how may I require a valid user for every page except these special pages which can be seen by anybody? Thanks in advance for your thoughts. Update in response to comments; here is a working apache2 config: <Directory /var/www/> Options Indexes FollowSymLinks MultiViews Order allow,deny allow from all </Directory> # require authentication for everything not specificly excepted <Location / > AuthType Basic AuthName "whatever" AuthUserFile /etc/apache2/htpasswd Require valid-user AllowOverride all </Location> # allow standard apache icons to be used without auth (e.g. MultiViews) <Location /icons> allow from all Satisfy Any </Location> # anyone can see pages in this tree <Location /special_public_pages> allow from all Satisfy Any </Location>

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  • Add dpkg .symbols or.shlibs to package made using checkinstall

    - by Hubert Kario
    I have created a simple package using checkinstall of the Oracle Instantclient client libraries, the package installs without problem and is seen in the system. Problem is, that checkinstall doesn't create /var/lib/dpkg/info/oracle-instantclient11.2-basic.symbols or /var/lib/dpkg/info/oracle-instantclient11.2-basic.shlibs files so when I try to create another package (with proper build scripts) that depends on oracle-instantclient11.2-basic the build fails with dpkg-shlibdeps: error: no dependency information found for \ /usr/lib/libclntsh.so.11.1 (used by \ debian/libopendbx1-oracle/usr/lib/opendbx/liboraclebackend.so.1.2.0). dh_shlibdeps: dpkg-shlibdeps \ -Tdebian/libopendbx1-oracle.substvars \ debian/libopendbx1-oracle/usr/lib/opendbx/liboraclebackend.so.1.2.0 \ returned exit code 2 make: *** [binary-arch] Error 9 Is there an easy way to automatically create a package with .symbols or .shlibs files?

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  • Is there a way to set access to WMI using GroupPolicy?

    - by Greg Domjan
    From various documentation it appears that to change WMI access you need to use WMI to access the running service and modify specific parts of the tree. Its kind of annoying changing 150,000 hosts using the UI. And then having to include such changes in the process of adding new hosts. Could write a script to do the same, but that needs to either connect to all those machines live, or be distributed for later update say in an startup/install script. And then you have to mess around with copying binary SD data from an example access control. I've also found you can change the wbem/*.mof file to include an SDDL but I'm really vague on how that all works at the moment. Am I just missing some point of simple administration?

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  • How to dump remote database without mysqldump?

    - by deceze
    I want to dump the database on my remotely hosted site in regular intervals using a shell script. Unfortunately the server is locked down pretty tight, has no mysqldump installed, binary files can't be executed by normal users/in home directories (so I can't "install" it myself) and the database lives on a separate server, so I can't grab the files directly. The only thing I can do is log into the webserver via SSH and establish a connection to the database server using the mysql command line client. How can I dump the contents to a file a la mysqldump in SQL format? Bonus: If possible, how can I dump the contents directly to my end of the SSH connection?

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  • Single file changed: intrusion or corruption?

    - by Michaël Witrant
    rkhunter reported a single file change on a virtual server (netstat binary). It didn't report any other warning. The change was not the result of a package upgrade (I reinstalled it and the checksum is back as it was before). I'm wondering whether this is a file corruption or an intrusion. I guess an intrusion would have changed many other files watched by rkhunter (or none if the intruder had access to rkhunter's database). I disassembled both binaries with objdump -d and stored the diff here: https://gist.github.com/3972886 The full dump diff generated with objdump -s is here : https://gist.github.com/3972937 I guess a file corruption would have changed either large blocks or single bits, not small blocks like this. Do these changes look suspicious? How could I investigate more? The system is running Debian Squeeze.

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  • Recommended boot partition size for Windows 7

    - by dwj
    I started using One Big Partition for everything and separating data out with folders when I got my current computer years ago. I'm preparing to upgrade my system from Windows XP to Windows 7 and I thought I might go back to putting my data on a separate partition. Most likely I'll just use the default OS install. My current Program Files tree has ~16 GB of stuff. Thinking ahead though, I've had XP installed for years. Who knows what apps I'm going to install down the line? This, of course, begs the question: How big do I make my Windows 7 install partition?

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  • sar command to generate only CPU utilization and network statistics in Linux

    - by Vijay Shankar Kalyanaraman
    I want to be able to generate the system activity report every 30 seconds or every minute and store in a file and use it for diagnostic purposes on my VM. So I give an output file for the sar command and read it using the "-f" option. But I only use the CPU utilization and network utilization part of the report and so rest is all that I don't want to save (waste the space in the disk to store these reports). Also the sar files that are generated are all binary. Is there a way to collect these stats for the CPU and network utilization alone? and so save almost 2/3rds the space on the disk?

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  • How can I disable reverse DNS in Apache 2?

    - by Creighton Hale
    I want to disable reverse DNS in Apache 2. I have done the following steps: In apache2/apache2.conf file ,HostnameLookups is set as OFF Tcpdump session confirmed thatApache was doing double reverse lookups even though the HostnameLookupsdirective was clearly turned off. No hostnames insites-available. The problem still remains. UPD: version of apache is dpkg -l | grep apache2 ii apache2-mpm-prefork 2.2.16-6+squeeze4 Apache HTTP Server - traditional non-threaded model ii apache2-utils 2.2.16-6+squeeze4 utility programs for webservers ii apache2.2-bin 2.2.16-6+squeeze4 Apache HTTP Server common binary files ii apache2.2-common 2.2.16-6+squeeze4 Apache HTTP Server common files apache2 -l Compiled in modules: core.c mod_log_config.c mod_logio.c prefork.c http_core.c mod_so.c I think mod_security is not present.

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  • Problems installing Ruby 1.9.2 and rvm on Debian Lenny

    - by Dave Everitt
    I have currently have Ruby 1.9.1 (bad) and want to install 1.9.3 under rvm. However, rvm requirements gives a long list: install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion But I've hit a problem here: /# apt-get install libreadline6 Reading package lists... Done Building dependency tree Reading state information... Done E: Couldn't find package libreadline6 ...and (I imagine after just hunting down a Debian source to download curl) finding these packages isn't going to be a picnic. Given that there are few packages to install before I can get rvm to install Ruby 1.9.3, what's a good way forward? My sources.list: deb http://archive.debian.org/debian/ lenny main contrib

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  • Can't install php5-apc from dotdeb source in Debian 6

    - by YNT
    I can't install php5-apc: ~# apt-get install php5-apc Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: php5-apc : Depends: php5-common (= 5.3.19-1~dotdeb.0) but 5.3.8-2 is to be installed E: Broken packages Have fresh Debian 6 and deb http://packages.dotdeb.org squeeze all deb-src http://packages.dotdeb.org squeeze all in source.list. P. S. I'm not very experienced—just trying to set up a server by the tutorial.

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  • Apache RewriteRule with a RewriteMap variable substitution for the VAL argument to environment variable

    - by Eric
    I have an Apache server that serves up binary files to an application (not a browser). The application making the request wants the HTTP Content-MD5 header in HEX format. The default and only option within Apache is Base64. If I add "ContentDigest on" to my VirtualHost, I get this header in Base64. So I wrote a perl script, md5digesthex.pl, that gives me exactly what I want: MD5 in HEX format but I'm struggling with the RewriteRule to get my server to send the result. Here is my current Rewrite recipe: RewriteEngine on RewriteMap md5inhex prg:/www/download/md5digesthex.pl RewriteCond %{REQUEST_URI} ^/download/(.*) RewriteRule ^(.*) %{REQUEST_URI} [E=HASH:${md5inhex:$1}] Header set Content-MD5 "%{HASH}e" env=HASH The problem is that I can't seem to set the HASH environment variable based on the output of the md5inhex map function. It appears this behavior is not supported and I'm at a lost as to how to formulate this...

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  • chroot'ing SSH home directories, shell problem.

    - by Hamza
    Hi folks, I am trying to chroot my SSH users to their home directories and it seems to work.. in a strange way. Here is what I have in my sshd_config: Match group restricthome ChrootDirectory %h The permissions on the user directories looks like this: drwxr-xr-x 2 root root 1024 May 11 13:45 [user]/ And I can see that the user logs in successfully: May 11 13:49:23 box sshd[5695]: Accepted password for [user] from x.x.x.x port 2358 ssh2 (with no error messages after this) But after entering the password the PuTTY window closes down. This is a wild guess, but could it be because the user's shell is set to /bin/bash and it can't execute because of the chroot? If so, could you give me pointers on how to fix it? Would simply copying the bash binary into user's home directory and modyfying the shell work? How would I deal with the dependencies, ldd shows quite a few of those :) Comments/suggestions will be appreciated. Thanks.

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  • How can I install a headless JDK on an Ubuntu Jaunty server?

    - by Hanno Fietz
    I recently set up a build server that requires a JDK to run (for example, to compile the Java sources). The OpenJDK package in Ubuntu pulls in the OpenJDK JRE as a dependency which, in turn, depends on a large number of packages that are only relevant for graphical environments. For the standard JRE, there's a headless version of the package, but for the JDK, no. This issue has been discussed in various places before, and one solution that I found and used was this: $ apt-get --no-install-recommends -d install openjdk-6-jdk $ dpkg -i --ignore-depends=openjdk-6-jre /path/to/just-downloaded.deb While this worked, it now leaves my system with a broken dependency tree and apt-get refuses further installs untill I run apt-get -f. Is there a better solution to this?

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  • Apache 2.2 Windows XP Uninstall Doesn't Remove All Files

    - by AJ
    Hello, I am trying to uninstall Apache 2.2 on Windows XP. The original installation was from the binary msi distribution. The uninstall function of the msi ran successfully, but it failed to remove a couple of folders: C:\Apache2.2\conf C:\Apache2.2\logs I am unable to remove these folders manually because they contain files for which I do not have ownership. And this is the source of my confusion: why if I installed the program do I not have permission to remove it? To be clear, I do not have local admin rights (nor can I request them), yet the files in these two remaining folders are owned by Administrator. How is it that Administrator created these files (and how can I possibly remove them)? Thanks, -aj

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