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  • Use sudo su - <username> to access the <username's> account but sudo su - shouldn't be possible with a sudo user

    - by Winnie
    There is a requirement I got. My sudo users (for which their entry in sudoers file) should be able to access other user's account say Oracle using following command: sudo su - Oracle The above should work with giving current users password. But if the same user is firing the following command, sudo su - it shouldn't work and thus root access shouldnt be given to current user. I am not using su because because i dont want current user to know the credentials of other user(root,Oracle etc.). Can anyone please help me . Its urgent...

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  • PyQt4.QtCore doesn't contain many of its classes and attributes

    - by toc777
    Hi everyone, I have built PyQt4 from source and everything went smoothly until I tried to use some of the classes and attributes located in QtCore. For some reason QtCore is missing a lot of functionality and data that should be there. For example from PyQt4.QtCore import QT_VERSION_STR is an import error. There were no errors or warnings given when building the packages and I have also tried with the PyQt packages from yum but I have the same problem. Has anyone else encountered this problem before? Thanks.

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  • Solr admin with only JRE possible?

    - by Camran
    I have installed JRE on my Ubuntu server. However, not JDK. When I execute solr to start, everything seems fine. But I cant access the solr/admin page. Wonder if this is possible without the JDK? Or do I have to have JDK installed? Thanks

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  • How to set up Node server for production on own machine?

    - by Matt Hintzke
    This must be a pretty basic thing to do, but I cannot find any good guide on how to do it on the internet. I only find how to set up a development environment for Node. I want to be able to forward my R-Pi's port 80 to my Node server, which I want to obviously listen on port 80. How can I close the native port 80 so that I can let me Node server listen on that port. Ultimately, I want to be able to access my pi from any remote location. I know how to set up a static IP and forward the port on my router, but now how do I allow Node into port 80?

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  • Ubuntu 9.10 Server (minimal virtual machine) partitioning

    - by John
    I am setting up a generic Ubuntu server and am trying to figure out the (best) way to partition the machine. Again, this is just a generic one: The default drive is 20GB. Some guides show: Separate /home, /usr, /var and /tmp partitions Another one suggested something like this: / 4GB /boot 512MB /tmp 1GB /home 5GB /usr 5GB /var 5GB What is the best way to accomplish this?

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  • How to copy a ram_base file to disk efficiently

    - by Hui Jin
    I want to copy a large a ram-based file (located at /dev/shm direcotry) to local disk, is there some way for an efficient copy instead of read char one by one or create another piece memory? I can use only C language here. Is there anyway that I can put the memory file directly to disk? Thanks!

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  • How can I get cmake to find my boost installation

    - by BD at Rivenhill
    I have installed the most recent version of boost in /usr/local (with includes in /usr/local/boost and libraries in /usr/local/lib/boost) and I am now attempting to install Wt from source, but cmake (version 2.6) can't seem to find the boost installation. It tries to give helpful suggestions about setting BOOST_DIR and Boost_LIBRARYDIR, but I haven't been able to get it to work by tweaking these variables. The most recent error message that I get is that it can't find the libraries, but it seems to indicate that it is using "/usr/local/include" for the include path, which isn't correct (and I can't seem to fix it). Does anybody have a solution for this off the top of their head, or do I need to go mucking around inside cmake to figure it out?

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  • gcc compiled binaries w/different sizes?

    - by BillTorpey
    If the same code is built at different times w/gcc, the resulting binary will have different contents. OK, I'm not wild about that, but that's what it is. However, I've recently run into a situation where the same code, built with the same version of gcc, is generating a binary with a different size than a prior build (by about 1900 bytes). Does anyone have any idea what may be causing either of these situations? Is this some kind of ELF issue? Are there any tools out there (other than ldd) that can be used to dump contents of binaries to see what exactly is different? Thanks in advance.

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  • Implemenation of a pass through file system

    - by user3491505
    Can anyone give me inputs on how to implement a pass through filesystem using fuse?? What I mean by this is that you mount your FUSE file system somewhere (say in /mnt) such that the FUSE file system passes all filesystem calls to some other place (say /home/user). For example, when you go into the /mnt directory and run "ls", this would pass the file system calls to execute ls through and run them on /home/user, such that the directory contents of /home/userwould be listed

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  • remove the content in directory and subdirectory hierarichally with out distroy the directory structure

    - by user3713876
    In shell script, I want to clear only text files and log files in the following structure with out removing the directory as well as subdirectories | |------bar/ | |---file1.txt |---file2.txt | |---subdir1/ | |---file1.log | |---file2.log | |---subdir2/ |---image1.log |---image2.log I am using rm -rf /bar/* so I am getting the result as follows. |------bar/ but I want the output like following | |------bar/ | | | | |---subdir1/ | | | |---subdir2/ I want to remove only text files or log files or csv with out removing the directory and the subdirectories

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  • Using wget via Python

    - by CoreIs
    How would I download files (video) with Python using wget and save them locally? There will be a bunch of files, so how do I know that one file is downloaded so as to automatically start downloding another one? Thanks.

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  • Skip all databases and run only specific one

    - by Ergec
    I have a sql file generated by "mysqldump --all-databases" . There are many databases in it. What I want to do is to update my local database but only a specific one, not all. I tried to use "mysql -database=db_name < file.sql" but it updated all databases. Is there a way to skip all databases except the one that I want.

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  • Problem Making C++ script

    - by Abs
    Hello all, I am not sure if I can post this sort of question (apologies in advance) but I am trying to build something from this blog post. # mkdir wkthumb # cat > wkthumb.cpp # qmake -project # qmake && make # ./wkthumb I have no experience with this, but I download all the files needed in the directory wkthumb using git. I have gone inside this directory and tried to execute cat > wkthumb.cpp - this just hangs for me. In addition, I thought cat was supposed to be used like this: cat file1.txt file2.txt > file3.txt? The above is blank with the first arguments? I am using Fedora Core 10.

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  • When is a program limited by the memory bandwidth?

    - by hanno
    I want to know if a program that I am using and which requires a lot of memory is limited by the memory bandwidth. When do you expect this to happen? Did it ever happen to you in a real life scenario? I found several articles discussing this issue, including http://www.cs.virginia.edu/~mccalpin/papers/bandwidth/node12.html http://www.cs.virginia.edu/~mccalpin/papers/bandwidth/node13.html http://ispass.org/ucas5/session2_3_ibm.pdf The first link is a bit old, but suggests that you need to perform less than about 1-40 floating point operations per floating point variable in order to see this effect (correct me if I'm wrong). How can I measure the memory bandwidth that a given program is using and how do I measure the (peak) bandwidth that my system can offer? I don't want to discuss any complicated cache issues here. I'm only interested in the communication between the CPU and the memory.

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  • Methods of sending web-generated config files to servers and restarting services.

    - by JPG
    Hi, We're writing a web-based tool to configure our services provided by multiple servers. This includes interfaces configuration, dhcp configs etc. etc. Having configs in database and views that generate proper output, how to send it/make it available for servers? I'm thinking about sending it through scp and invoking reload command to services through ssh. I'm also thinking about using Func to do all the job, as this is Python tool and will seemingly integrate with python-based (django) config tool. Any other proposals?

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  • How to make a call to an executable from Python script?

    - by fx
    I need to execute this script from my Python script. Is it possible? The script generate some outputs with some files being written. How do I access these files? I have tried with subprocess call function but without success. fx@fx-ubuntu:~/Documents/projects/foo$ bin/bar -c somefile.xml -d text.txt -r aString -f anotherString >output The application "bar" also references to some libraries, it also creates some files besides the output. How do I get access to these files? Just by using open()? Thank you,

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  • How to get line count from variable (from MYSQL query)?

    - by Mint
    My problematic code: testMYSQL=`mysql -u $mysqlUser -p$mysqlPass -h $mysqlHost --skip-column-names --batch -D $mysqlDB -e "SELECT $select FROM $mysqlTable WHERE nameTXT='test';"` $testMYSQL now contains: test test test Then I do: TEST=$(echo $testMYSQL | wc -l) echo "$TEST" I would of thought that would work, but it doesn't, it returns 1 But if I put this into $testMYSQL: "test\ntest\ntest" it will say 3… Whats going on here? does MYSQL not use new lines? PS, I know I can use a for loop to loop though the lines then count up the lines that way, but I was hoping for a simpler solution like wc

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