I am trying to edit sources.list using vi editor but getting the following error while saving the file: /etc/apt/sources.list" E212: Can't open file for writing

Here is my setup: Jenkins is running on my linux machine as 'jenkins' user. I have generated a ssh key-pair as described in Linux - Setup Git, for the 'jenkins' user. When I sudo su jenkins and t...

I am trying to compare strings in bash. I already found an answer on how to do it on stackoverflow. In script I am trying, I am using the code submitted by Adam in the mentioned question: #!/bin/b...

I'm trying to install the Rails environments on Ubuntu 11.04. When I launch the command rvm install 1.9.2 --with-openssl-dir=/usr/local the following error is received: curl : (1) Protocol https n...

I am using Ubuntu and when I click on a program to download Firefox asks me "What should firefox do with this file?" And in the "Open with" I would like to find a program "Package installer". The p...

I have just download the .deb and installed it. It works. Now i want to uninstall it. I have tried: sudo apt-get remove mysql-workbench, but it says "E: Unable to locate package mysql-workbench"...

I have Ubuntu 11.04 and i downloaded latest eclipse ADT bundle, i also have installed all ia32libs, i dont know why the emulator is not starting, i have tried various device configurations, i have ...

I installed APC on my ubuntu 11.04 linux and I want to make some performance benchmarks to see what's the speed improvement over PHP without APC but I don't know how to disable/remove the APC. I t...

I tried to compile the following code on ubuntu 11.04: #include <boost/interprocess/shared_memory_object.hpp> #include <iostream> int main() { boost::interprocess::shared_memory_...

I'm trying to install Hadoop on Ubuntu 11.10. I set the JAVA_HOME variable in the file conf/hadoop-env.sh to: # export JAVA_HOME=/usr/lib/jvm/java-1.6.0-openjdk and then I execute these command...

I'm using Ubuntu 11.04, rvm and Heroku. When I'm doing this heroku logs --tail Ctrl-C doesn't stop the process, contrary to the documentation.

I have a Rails app that I'm developing on Windows and deploying to Linux. I suspect I'll just switch entirely over to Linux in the future. Anyway, on Linux I need 'execjs' and 'therubyracer' but I ...

One of the problems, I face with supervisord is that when I have a command which in turn spawns another process, supervisord is not able to kill it. For example I have a java process which when r...

I can install MYSQL on Ubuntu without prompts with the code below: dbpass="mydbpassword" export DEBIAN_FRONTEND=noninteractive echo mysql-server-5.1 mysql-server/root_password password $dbpass | d...

How can i extend default lib search path in ubuntu(in a way that it is also persistent) ? no, I do not want export LD_LIBRARY_PATH based temporary solution, rather some way to extend the default li...

I've installed Apache2 with PHP5 support and everything works there. I've installed PostgreSQL and am able to connect to it using the terminal and execute SQL statements. PROBLEM: I can't get a wor...

I'm using RVM, Ruby 1.9.2, and Rails 3.0.7 A standard kill of the process from another terminal doesn't work, either, but kill -9 does, of course. I found a similar question, CTRL+C to Webbrick s...

I tried to install OpenCV2.2 on Ubuntu 11.04. But OpenCV compilation fails stating an error related to linux/videodev.h file. File available in /user/includes/linux is named videodev2.h. /home/us...

I'm building a web server to host multiple websites. I got everything working except the mail server. I'm using linode to host my vps and I've been following their tutorials. FYI, I'm using Ubuntu ...

Im a newbie in ubuntu. Im getting an error while installing phpmyadmin in ubuntu11.4 server. It says An error occurred while installing the database: ERROR 1045 (28000):Access denaid for user 'ro...

When I'm trying to install autoconf in Ubuntu 11.04 by the following command sudo apt-get install autoconf This error comes Reading package lists... Done Building dependency tree Reading state...

From my searches online, I've found dozens of web-based MongoDB GUIs, as well as a native desktop application for MacOS, and one for Windows. But I'm having trouble finding any desktop GUIs f...

I'm attempting to connect to a SQL Azure database via PHP running on an Ubuntu 11.04 server. The server is running PHP Version => 5.3.5-1ubuntu7.11. I've installed freetds-bin, freetds-common, td...

Rails ask me to succeed with gem install mysql2 and on trying I got the following error.So what is mostly problem with such error? Detail of error is below: Could not create Makefile due to some r...

I did a fresh-install of XAMPP for Linux (version 1.7.4) on my Ubuntu 11.04 x64 laptop. Then I made a link in my htdocs folder to my project folder: $pwd /opt/lampp/htdocs $sudo ln -s /home/petra/...