Can not increase max_open_files for Mysql max-connections in Ubuntu 15
Ubuntu has moved from to Upstart to Systemd in version 15.04 and no longer respects the limits in /etc/security/limits.conf for system services. These limits now apply only to user sessions. The limits for the MySQL service are defined in the Systemd configuration file, which you should copy from its default...
shell script to start conky and plank
You don't need the echoes or the back quotes. Just: #!/bin/bash conky -q & plank & This should also work: #!/bin/bash echo `conky -q` & echo `plank` & So you put in background the whole command....
Run simple Java class file with crontab
You should not provide a full path when trying to execute a class with "java". The "java" command expects to receive just the class name as an argument. That's why this works properly: java HelloWorld But this does not: /usr/bin/java /home/shivajividhale/cloudOccular/HelloWorld To make the latter work, you need to provide...
Fail to build Mono.Addins with the latest Mono 4.3.0 and GTK# on Ubuntu 14.04
Ok, I found the solution. It was simple. I just have chosen wrong version of GTK# library. It should be a 2.12.* version, but on GTK# master it is 2.99.*. When I changed the version (by git checkout), everything was compiled as it should. Mono.Addins will compile with 2.99.* of...
set up Apache2 virtual hosts and now MongoDB connection refused
mongodb,ubuntu,amazon-web-services,apache2
When I went through the logs, I saw a message that there was insufficient room for "journal file." I rebooted my AMI on an EC2 instance with more storage and reinstalled Mongo. That did the trick. I had uploaded a few files to the instance after updating my Apache2 settings,...
@font-face for icons not working in Chrome-Ubuntu
css,google-chrome,ubuntu,fonts
Well I'll be damned. It was AdBlock. AdBlock usually displays a little badge showing how many elements are being blocked on each page. It didn't show anything! I hadn't noticed these styles being inserted until now: ::content a[title="Connect with us on Twitter"], ::content a[title="Connect with us on Youtube"], ::content a[title="Facebook"],...
Is it possible to dump the core but not exit the process?
You can also do that using gcore: Generate a core dump of a running program with process ID pid. Produced file is equivalent to a kernel produced core file as if the process crashed (and if "ulimit -c" were used to set up an appropriate core dump limit). Unlike after...
What is version of cuda for nvidia 304.125
ubuntu,cuda,ubuntu-14.04,nvidia
304.xx is a driver that will support CUDA 5 and previous (does not support newer CUDA versions.) If you want to reinstall ubuntu to create a clean setup, the linux getting started guide has all the instructions needed to set up CUDA 7 if that is your intent. I believe...
Unable to connect to mariadb database server with qt 4.8.5 and Ubuntu 12.04
It was a problem with the database and not the Qt application, the connection refused if a password was used.
Boost unit test dynamic linking on Ubuntu
c++,ubuntu,singleton,dynamic-linking,boost-unit-test-framework
Got it! Ubuntu seems to use the --as-needed linker option by default, where as Fedora may not. Turning it off will add libcase.so library to the needed list for unittest. After deploying the library (or using LD_LIBRARY_PATH) the unittest works now. unittest: libcase.so g++ -o unittest test_main.cpp -Wl,--no-as-needed -L. -lcase...
How do I make all files executable that have the file extension .cgi?
Try to combine find with chmod: sudo find /path/to/files -name "*.cgi" -exec chmod +x {} \; ...
Can't run django-admin startproject mysite (ubuntu, django.core.exceptions.ImproperlyConfigured)
python,django,ubuntu,django-admin
You have misspelled startproject as startprojekt. Try: django-admin startproject mysite ...
phpinfo() not working in apache2
Install sudo apt-get install libapache2-mod-php5 if you didnt before.
Trouble running C++ through terminal in Ubuntu
The errors that you are getting are because the cout is not in the global namespace rather it is in std namespace. Well instead of writing using namespace std; after #include <iostream> try using: using std::cout; since using first option is a bad practice. You can refer to Why is...
Nginx redirect http subdomains to https
ubuntu,redirect,ssl,nginx,rewrite
Your web server is setup with Strict-Transport-Security max-age=16070400; includeSubdomains. This will tell the web browser to request your domain using https only. If you want the subdomain blog to be accessed through insecure http, you will need to remove includeSubdomains from the HTTP Strict Transport Security (HSTS) and use a...
How to deal with libraries like Boost when cross compiling for arm?
ubuntu,cmake,g++,cross-compiling,beagleboneblack
Yes, you need the boost libraries which are not header only built for ARM. This SO question covers that: cross compile Boost 1.57.0 on ubuntu for arm To make things like find_package work for cross compilation you should set CMAKE_FIND_ROOT_PATH. Suppose you set CMAKE_FIND_ROOT_PATH to /opt/beagleboard. CMake will then look...
Anyone successfully used jonnyw's “php phantomjs” with laravel, in a ubuntu envirement?
Yep, but it's a pain. Most of the time it's because you have to use the full path to the phantomjs executable. Also, make sure phantomjs is properly installed on your server too, like, does it work if you just run the phantomjs command in a terminal? ...
JApplet does not receive mouse-events
window.setBounds(100, 100, SCREENW, SCREENH); was missing!...
C++ Ubuntu select() if serial interface has data on asynchronous read
c++,multithreading,ubuntu,asynchronous,serial-port
Didn't specify a fd_set to read. Try this: fd_set readfs; /* file descriptor set */ FD_ZERO(&readfs); /* clear the set */ FD_SET(fd, &readfs); /* put the fd in the set */ int ret = select(fd + 1, &readfs, 0, 0, &tv); Edit: That should also solve your other question. Each...
Kill command in UNIX
See the manual page (http://linux.die.net/man/2/kill) If pid equals -1, then sig is sent to every process for which the calling process has permission to send signals, except for process 1 (init), but see below. So I guess that is you out of the system - but life continues for the...
Creating a docker swarm cluster in Vagrant
ubuntu,vagrant,virtual-machine,docker-swarm
As show swarm/discovery in comment: # on each of your nodes, start the swarm agent # <node_ip> doesn't have to be public (eg. 192.168.0.X), # as long as the swarm manager can access it. $ swarm join --addr=<node_ip:2375> token://<cluster_id> node_ip it's the ip address of the new node of the...
How can I run a libGDX application on a non-GUI server environment?
java,linux,ubuntu,libgdx,server
I've answer my self this question for anyone who's looking for this. First, added these two libraries in the build.gradle file: compile "com.badlogicgames.gdx:gdx-backend-headless:$gdxVersion" compile "org.mockito:mockito-all:1.9.5" Then, I've started my libGDX as following: HeadlessNativesLoader.load(); MockGraphics mockGraphics = new MockGraphics(); Gdx.graphics = mockGraphics; HeadlessNet headlessNet = new HeadlessNet(); Gdx.net = headlessNet; HeadlessFiles...
Error installing nokogiri in ubuntu 14.0.4 (Ruby 1.8.7)
ruby,ubuntu,gem,install,nokogiri
I tried the following commands and I've got it. Thanks to Mr.Kumar $ sudo apt-get update $ sudo apt-get install libxml2-dev $ sudo apt-get install libxslt-dev $ sudo gem install nokogiri -v '1.4.7' $ gem list nokogiri *** LOCAL GEMS *** nokogiri (1.4.7) ...
Can't install Composer on Ubuntu behind proxy
I got help from some experts close by: add 3 lines to /etc/profile export http_proxy=http://[username]:[password]@[webproxy]:[port] export https_proxy=http://[username]:[password]@[webproxy]:[port] export ftp_proxy=http://[username]:[password]@[webproxy]:[port] For a similar error (apt-get update was not reaching some repositories), I edited /etc/apt/apt.conf: Acquire::http::proxy "http://[username]:[password]@[webproxy]:[port]"; Acquire::https::proxy "https://[username]:[password]@[webproxy]:[port]"; Acquire::ftp::proxy...
c++ expected template-name before ‘<’ token error [closed]
c++,templates,ubuntu,inheritance,g++
In Derived.hpp, you need to add: #include "Base.hpp" at the top. Otherwise, the compiler doesn't know what Base refers to when compiling this file....
Write Access for user on all repos on Gitolite
myreponame.git doesn't exist on the server currently, but I'd like to be able to add it automatically just by using the remote add origin command. That is not how you add a new repo with gitolite. You need to modify your conf/gitolite.conf file of your gitolite-admin repo, in order...
No space left on device [closed]
ruby-on-rails,apache,ubuntu,amazon-web-services,storage
You only have 7.5G of total space. Your /etc folder is using up 3.7G, which seems like waaaay too much, and your home directory is 1.3G. Use du -sh * on each of these directories to find out what is using so much space in them and delete them if...
Trouble Connecting to MySQL via SSH
javascript,node.js,ubuntu,ssh,node-mysql
This can actually be simplified if all you need to do is tunnel MySQL connections from inside your application. The mysql2 module has (better) support for passing a custom stream to use as the database connection, this means you do not have to start a local TCP server and listen...
Icecast on virtualbox ubuntu through router
It depends on your VirtualBox network settings for that VM. If you have set the networking up for bridging and have forwarded your ports directly to the VM, you're done. If you are using NAT, then you need to forward ports from your host to the guest OS using the...
Keyboard issues with Android Studio on Ubuntu
android,ubuntu,android-studio,ubuntu-14.04
As given here The bug seems to be triggered by some missing synchronization between IBus (the server) and Xlib + AWT (the client JVM), exposed by a combination of a quick succession of key presses and the client’s slower event handling. The 2 workarounds that helped me were : Workaround...
PHP Autoloader doesn't work on Ubuntu production server
It's your wrong autoloading definition. You want to use the class PicoCore\Rest\ApiInitializer And you have these files: api/index.php api/vendor/... (with your required external dependencies) api/composer.json (with the autoloading mentioned in your question) api/core/PicoCore/rest/ApiInitializer.php And you have this autoloading configured: "autoload": { "psr-0": { "PicoCore\Rest\" : "PicoCore/rest" } } This is...
Has anyone successfully used codedeploy on Ubuntu?
There's no need to use alien. There is an official deb package as well. s3://aws-codedeploy-us-east-1/latest/codedeploy-agent_all.deb You should use the install script at s3://aws-codedeploy-us-east-1/latest/install to automatically download the latest release of the agent. Here's the user data example for Ubuntu in us-east-1 here: #!/bin/bash apt-get -y update apt-get -y install awscli...
Elasticsearch 1.6 reboot on ubuntu pid-file
linux,ubuntu,elasticsearch,pid
Until elasticsearch fixes it , one possible workaround is to adapt the file /etc/init.d/elasticsearch change PID_DIR="/var/run/elasticsearch" to PID_DIR="/var/run" the PID file will now be created directly in the run folder. https://github.com/elastic/elasticsearch/issues/11594...
WalkingDead Program - Finding zombies and orphans
just make a loop executing the command you have with #include <stdlib.h> int system(const char *command); That´s all you need ...
Installing mod_wsgi for Python3 on Ubuntu
ubuntu,python-3.x,pip,virtualenv,mod-wsgi
If they had activated the Python 3 virtual environment and its bin directory was in there path, then likely they could simply run 'pip' rather than 'pip3'. You should run 'which pip' to verify whether it was coming from the virtual environment you expect. The 'mod_wsgi-httpd' package is specifically for...
Building CUDA-aware openMPI on Ubuntu 12.04 cannot find cuda.h
OK, I think I fixed the problem. The conftest.c seems to be looking for cuda.h in /usr/include, instead of the supposed /usr/local/cuda/include. The problem is solved once I created a soft link of cuda.h and cuda_runtime_api.h.
Zip all subdirectories using python
Probably your issue is with the path you're passing as an argument. I've tried your script with the following changes: import shutil import os loc = "testfolder" path = os.getcwd() + '/' + loc + "/" dirs = os.listdir( path ) for file in dirs: name = file shutil.make_archive(name, 'zip',...
Error installing gem twitter on Ubuntu 15.04
ruby-on-rails,ruby,ubuntu,twitter
You are getting this error because there is no ruby development environment installed. Development environment is needed to compile ruby extensions, You should install development first using command below: $ sudo apt-get install ruby-dev ...
Summing numbers after string
You can try sed: sed -e 's/^.*bucket://' | sed -e 's/[a-zA-Z]*:$//'...
How does one install MarkLogic 8 on Ubuntu 14.04?
According to Alex Bleasdale/David Ennis, download the CentOS version; then: Ubuntu and other Debian based distributions use DEB packages and CentOS or RedHat use RPM packages. To convert an RPM to DEB in a somewhat reliable way, one can use the 'alien' command. You install and use alien as follows:...
Building RethinkDb server in Ubuntu 14.10 results in an error
It looks like you are missing the m4 package. On Ubuntu, you can install it by doing sudo apt-get install m4 ...
Ubuntu 14.04 - An error occurred while installing pg (0.18.2), and Bundler cannot continue
ruby-on-rails,postgresql,ubuntu,heroku,sqlite3
Do you have PostgreSQL installed locally? If not, that might be the reason for that (having gem 'pg' is not enough to install it locally). You will have to run sudo apt-get install postgresql postgresql-contrib to install. You do not need it installed locally to push to Heroku though...as long...
Unable to deploy through capistrano after ubuntu upgrade
ruby-on-rails,ubuntu,ruby-on-rails-4,deployment,capistrano
I suppose that the RSA identity is not added to the authentication agent. To add the identity, just run the command ssh-add ~/.ssh/id_rsa...
Access binaries inside docker
It doesn't seem to be configurable at the moment based on this open issue. However, you could always fork the project and modify the start script to use your own custom docker image. If so, make sure you make it: FROM meteorhacks/meteord:base ...
Installing findbugs on Ubuntu
"input file /home/raghuveer/Downloads/hadoop-2.6.0-src/hadoop-common-project/hadoop-common/target/findbugsXml.xml does not exist" A resource file usually should reside in <your project>/src/main/resources/ to be copied to /target during the build. See Maven, Introduction to the Standard Directory Layout and Apache Maven Resources Plugin: The Resources Plugin handles the copying of project resources to the output directory. ...
Send alert for 80% threshold comparing two values from Disk partition
linux,unix,ubuntu,storage,diskspace
Here's an awk script I wrote years ago to do this very thing. Just put it in cron to run at a specified schedule. #!/bin/sh /bin/df | \ /usr/bin/awk '{if($5 ~ "%" && $6 !~ "proc") {used=$5} else {used=""}; \ sub(/%/, "", used); \ if(used > 80) print $6 "...
How to attach several files in mail using unix command?
mysql,email,ubuntu,sendmail,ubuntu-14.04
You are very close. You can use mail command to send 1 attachment as follow (you'd better TAR / ZIP your files before sending): echo "$2" | mail -s "$1" -a /path/to/file.tar.gz [email protected] Next, if you want to have more features, you can use mutt (install with apt-get install mutt):...
Zombie process - Finding it
The following applies to Linux (at least): The status of a process can be found in /proc/[pid]/status. For a zombie the file /proc/[pid]/cmdline is empty, that is reading from it returns 0 bytes. For details please see here: http://man7.org/linux/man-pages/man5/proc.5.html...
“We're sorry, but something went wrong.” Rails app on Ubuntu, Apache, Passenger on DigitalOcean
ruby-on-rails,ruby,apache,ubuntu
As I can see you are having PG error, you can make these changes: sudo nano /etc/postgresql/9.1/main/pg_hba.conf Change => local all all ident To => local all all trust if still do not work change to=> local all all md5 Then restart your postgres server sudo /etc/init.d/postgresql restart ...
Python3 input() error: can't initialize sys standard streams
Magic number is the term for the first two bytes of an executable file. It is used to determine how the executable should be loaded. The magic number is also used in *.pyc files that are compiled from the *.py files. It says what version of bytecode is used inside....
valgrind improper output location
I recommend you to use --log-file=<filename> option. From manual: --log-file=<filename> Specifies that Valgrind should send all of its messages to the specified file. If the file name is empty, it causes an abort. There are three special format specifiers that can be used in the file name. %p is replaced...
Would using Vagrant be overkill? [on hold]
python,windows,ubuntu,vagrant,virtualbox
What I'm looking for is a way to run Ubuntu on this machine, for development work AND for personal use VirtualBox should be able to provide everything that you need. You can create a VM of your choosing, with or without a GUI and use it for whatever you...
Error in installing newspaper3k package via pip
Installation from github have helped me. pip3 install git+https://github.com/codelucas/newspaper.git...
JFrame wrong location with Ubuntu (Unity ?)
java,swing,ubuntu,jframe,location
I don't have Ubuntu to test with, but I've used something similar to this on both MacOS and Windows import java.awt.Container; import java.awt.Point; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionListener; import javax.swing.JFrame; import javax.swing.SwingUtilities; public class Test { private static JFrame mainFrame; public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() {...
Ubuntu Server TFTP on vitualbox
You're propably mixing up FTP and TFTP. I think you're searching for an instruction to set up a normal ftp server. Try this tutorial. If the server is reachable from the internet: Use a strong password, setup TLS / SSL and use your favorite FTP client software (e.g. FileZilla for...
Ubuntu down load a package and all of its dependencies without installing them
I've used camicri to download a package with all of its dependencies.
Redirect all requests, to Base URL without, using .htaccess
Best practice usually suggests adding these lines to your Apache config to disable directory listing: <Directory /> Options -Indexes Order allow,deny Allow from all </Directory> But this will simply deny users access to the URL example.com/img. If you'd like to redirect as well, you could add an index.php file to...
issues with installing newer cabal version for haskell vim now
ubuntu,haskell,vim,ubuntu-14.04,cabal
Your $PATH variable seems to be broken. In a comment you said it was /home/me/google-cloud-sdk/bin:/.cabal/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games This means that your shell (assumed to be bash) will look in the following directories /home/me/google-cloud-sdk/bin /.cabal/bin /usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin /usr/games /usr/local/games when looking for executable. If you look at the second...
Installing python 32 bit on 64 bit Kubuntu
python,linux,ubuntu,virtualenv
Why not just use VirtualBox to virtualize a 32 bit Kubuntu whenever you want to develop in 32 bit Python. That way you have the best of both worlds: your 64 bit system for normal use and a 32 bit system that you can fire up whenever you need it...
Protobuf cannot be linked on ubuntu
c++,ubuntu,linker,cmake,protocol-buffers
As @frymode pointet out in his comment, linkage to NewGeneratedMessageReflection means that the compiler generated code that uses Protobuf version 3 (as I used that version in my .proto files). However, the library files installed from the ubuntu package pulled version 2 onto my system, that's why the methods could...
Pretty URLs aren't working after upgrade to Mediawiki 1.24.2
Make sure, that you checked the following points: - the mod_rewrite module is enabled - you allow the htaccess to overwrite the settings you want (check, if the AllowOverwride directive is set, e.g. (that would be the easiest value) to all, see http://httpd.apache.org/docs/current/de/mod/core.html#allowoverride # your directory definition AllowOverwride All #...
netstat: parse (awk?) output to return “Program name” not “PID/Program name”
Try netstat -tlp | sed 's,[0-9]\+/,,' ...
Pylucene 4.9.0 Ubuntu 14.04 Installation ImportError
I had to add extra paths to my LD_LIBRARY_PATH environment variable to get things working. The test here in the conda build script actually shows those variables. export LD_LIBRARY_PATH=$PREFIX/lib:$PREFIX/jre/lib:$LD_LIBRARY_PATH export LD_LIBRARY_PATH=$PREFIX/jre/lib/amd64:$LD_LIBRARY_PATH export LD_LIBRARY_PATH=$PREFIX/jre/lib/amd64/server:$LD_LIBRARY_PATH export LD_LIBRARY_PATH=$PREFIX/lib/python2.7/site-packages:$LD_LIBRARY_PATH $PREFIX here is the path to the anaconda folder. I currently install miniconda at /usr/conda...
In ubuntu unable to write file in specified directory using java
You cannot write outside of the /home/ directory by default. Also sudo is a command, you cannot execute a command from a BufferedWriter. So, launch your jar with sudo java -jar yourJar.jar or launch your IDE in root (for eclipse sudo eclipse). And try something like that: import java.io.BufferedReader; import...
ImportError: No module named opencv after installing python-opencv in Ubuntu 14.04
python,opencv,ubuntu,install,ubuntu-14.04
You should be importing is cv2 not opencv, there is also no highgui. You might want to check out the docs
access external HDD to all user ubuntu [on hold]
Before beginning these instructions, I'd unmount the external HDD in order to start fresh. We're going to modify the fstab configuration file, located in /etc/fstab. We'll need to first find your HDD's UUID, so we can correctly configure fstab. To do this, run sudo blkid and note your HDD's UUID....
cuMemcpyDtoH yields CUDA_ERROR_INVALID_VALUE
Here val deviceOutput = new CUdeviceptr() cuMemAlloc(deviceOutput, SI) you are allocating SI bytes - which is 4 bytes, as the size of one int. Writing more than 4 bytes to this device pointer will mess up things. It should be cuMemAlloc(deviceOutput, SI * numElements) And similarly, I think that the...
How to share home directory for different users of GUI desktop application?
python,user-interface,ubuntu,permissions
Well, the answer is: do not use same home directory for all users! It is bad idea in the first place. Instead place the file .xsession in the directory all users have access to. (ex.: /usr/local/common/) So to have same application running for all users of the system (instead of...
Move git configuration from Windows to Ubuntu
To build upon Hi-Angel's answer: Under Windows 7 The local Git config is inside the .git directory at the root of your repository/project. The global Git settings are in C:\Users\<user_name>\.gitconfig. The SSH keys you generated are in C:\Users\<user_name>\.ssh (at least, this is the standard). Under Ubuntu/Linux The local Git config...
How do I switch between different versions of Julia (specifically between v0.3 and v0.4 on Ubuntu)?
linux,ubuntu,ubuntu-14.04,julia-lang
You can install different versions of Julia in different locations and set separate symlinks. For example, you could download the v0.3 Linux binaries and install them to one location, then clone the GitHub source for v0.4 and install that in another location. Then set symlinks such as julia3 for v0.3...
Django webapp (on an Apache2 server) hangs indefintely when importing nltk in views.py
python,django,apache,ubuntu,nltk
I am using the same web-stack as you and I had the exact same problem. This normally happens when you run multiple Django projects from the same server. You need to set WSGIApplicationGroup to %{GLOBAL} in your site's config settings WSGIApplicationGroup %{GLOBAL} I actually read this here: django apache mod-wsgi...
pyreport LaTeX formulae not working
I think i have find the problem. The problem is the RST tools to convert in html. In pyreport, when you choose the math mode, the program will do the sentence in a bock .. raw:: LaTeX But in the new version of rst2html, this command doesnt work, it's replace...
How do I respond to a prompt for password in a shell script?
If the program is reading from your terminal instead of stdin, you'll find that it ignores any data you send in using file redirection. If that's the case, then you can use a program like expect to automate interactions with the terminal using a pseudy-tty. This is exactly the sort...
What's the proper way of running a mongos client for a sharded cluster?
You would use --fork or an init script to make this run as a service post terminal session shut down. If the process goes down then your application cannot connect to the sharded set. It will be unable to connect at all to your DB. This is (not the only...
The reduce task is stopped by Too Many Fetch Failure message in Hadoop multi node (10x) cluster
java,linux,ubuntu,hadoop,distributed
My problem is now solved. Actually the problem was in my network settings. Unfortunately, the Hadoop system could not locate the right machine at the time of reduce due to my faulty network settings. The correct network settings should be: At /etc/hosts file the following info should contain: localhost 127.0.0.1...
terminal command for running sublime text 3 from on ubuntu
As per Mathias comment in my question I found the answer here... How can I open Sublime Text 2 files from the command line in linux to a tab, not a new window...
Android with outside database [closed]
First of all this is not a proper way to ask questions. You must do some research before asking question here. Since you asked the question already, let me answer this. You cannot(and you shouldn't) access database server directly from an android device. You need a web service in order...
How to redirect standard output to a file — what's wrong with this code?
You are writing on stdout which is buffered by default, and as I cannot see any break, return or exit in your loop, I assume that you quit your program with Ctrl-C. And all the values that were buffered until there are simply discarded. You should simply fflush stdout after...
How does using -L affect the linker?
To answer your direct question, unless you produce a static binary (by default linker will produce a dynamic one), there are default libraries to link with (libc, for one). Specifying -L does tell the linker to first look in the directories specified. It's not gcc thank links, but ld, gcc...
Not able to format namenode in hadoop-2.6.0 multi node installation
ubuntu,hadoop,installation,yarn
Add these lines in .bashrc: export HADOOP_HOME=/path/to/your/hadoop/installation export PATH=$PATH:$HADOOP_HOME/bin As for, I don't see any folder "bin" inside Hadoop installation Check whether you have binary distribution or source. Download hadoop-2.6.0.tar.gz from Hadoop Distributions, in case you have source distribution....
connect to mysql database which is in ubuntu server
php,mysql,ubuntu,azure,virtual-machine
1) change my.conf (whatever your mysql conf file is called). And set bind-address to 0.0.0.0 as it is prob 127.0.0.1 2) stop/restart mysql daemon Connections now are not limited to those from localhost (what you are when you ssh). The default is localhost for obvious security reason until dev guy...
Delay packets using Netem on Virtual Machine
ubuntu,networking,terminal,virtualbox
I looked around and realized I needed to use the sudo command so I added sudo before the "tc qdisc..." I'm fairly new to linux so I don't know many stuff. My bad!
Unable to get system thread id from python thread id in python 2.7
While porting I missed the _gettid in __bootstrap_inner method. I think it is required to be called in the context of the thread. In my case earlier it was getting called in the context of the main thread, hence the result.
Bash: Loop through file and read substring as argument, execute multiple instances
Parallel processing I'd use GNU/parallel. It isn't distributed by default, but can be installed for most Linux distributions from default package repositories. It works like this: parallel echo ::: arg1 arg2 will execute echo arg1 and and echo arg2 in parallel. So the most easy approach is to create a...
Chrome all of a sudden zoomed in on ubuntu
This is a known issue in Chrome 43.0.2357.124 for Linux. It is fixed as of Chrome 43.0.2357.125. See this issue in their bug tracker, opened 2 days ago (June 9 2015). You should update Chrome to the latest version: sudo apt-get update && sudo apt-get install --only-upgrade google-chrome-stable If updating...
Cannot set PHP include_path
I wouldn't leave library paths to chance like that: require_once(__DIR__ . '/libraries/Stripe/init.php'); This would make sure you include the script using the absolute directory path of the currently running script. Update Failed opening required '/var/www/html/libraries/Stripe/init.php' Well, then the file is simply not there; if this file was generated by some...
Block devices is not visible from aws console
Heuristics suggest that this is an m3.large or r3.large instance, and /dev/xvdb is your 32GB SSD ephemeral volume, also known as an instance store volume. http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html If this is true, you definitely need to familiarize yourself with ephemeral disks before you continue using it for whatever you are using it...
Error execute studio.sh unrecognized vm option 'MaxPermSize=350m' on Ubuntu 14.04
ubuntu,android-studio,ubuntu-14.04
oh I've solved this problem, I install Oracle JDK 9 when android studio runs on JDK 6 or JDK 7 (if I'm not mistaken). so I uninstalled Oracle JDK 9, then download and install the JDK 7...
Error in reading Ubuntu 14.04 mouse event file (/dev/input/event3) with java programmig
java,events,ubuntu,terminal,mouse
Check that your buffer size is correct. In recent Linux kernels size of input_event structure is dependent on many things, but mainly on cpu architecture. Here's its declaration: struct input_event { struct timeval time; __u16 type; __u16 code; __s32 value; }; On 32-bit systems it's very likely that your buffer...