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This is the repo for updating my current pc configuration, works for ubuntu 14.10 and macOS 10.12.6 (where specified)

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shethvironment

This is the repo for updating my current pc configuration, works for ubuntu 14.10 and macOS 10.12.6 (where specified)

Setting up ubuntu (14.10)

Update and upgrade installation

sudo apt-get update && sudo apt-get upgrade

Python software properties

sudo apt-get install python-software-properties
sudo apt-get install -y python-software-properties python g++ make

Sublime text 3

Installation
sudo add-apt-repository ppa:webupd8team/sublime-text-3
sudo apt-get update
sudo apt-get install sublime-text-installer
Prettify package for Sublimetext

https://packagecontrol.io/installation

Ctrl+Shift+P or Cmd+Shift+P in Linux/Windows/OS X
type install, select Package Control: Install Package
type prettify, select HTML-CSS-JS Prettify
type prettify, select GitGutter
type prettify, select SideBarEnhancements
type prettify, select AutoFileName
type prettify, select BracketHighlighter
type prettify, select DocBlockr
type prettify, select Babel

GUFW

sudo apt-get install gufw

Disable shopping suggestions

gsettings set com.canonical.Unity.Lenses disabled-scopes "['more_suggestions-amazon.scope', 'more_suggestions-u1ms.scope', 'more_suggestions-populartracks.scope', 'music-musicstore.scope', 'more_suggestions-ebay.scope', 'more_suggestions-ubuntushop.scope', 'more_suggestions-skimlinks.scope']"

Remove shopping suggestions for shopping/amazon

sudo apt-get autoremove unity-lens-shopping

RAR

sudo apt-get install rar

GIT

sudo apt-get update
sudo apt-get install git

CURL

sudo apt-get install curl

GUAKE

sudo apt-get install guake

GKSu (GKSu is a library that provides a Gtk+ frontend to su and sudo)

sudo apt-get install gksu

System Load Indicator

sudo apt-get install indicator-multiload

Gpick

sudo apt-get install gpick

Filezilla

sudo apt-get install filezilla

Guake might fail to launch with the following error message: Guake can not init! Gconf Error.

Have you installed guake.schemas properly?

To fix this error, run: (Optional)

sudo mkdir /etc/gconf/schemas
cd /etc/gconf/schemas/
sudo ln -s /usr/share/gconf/schemas/guake.schemas

Atom (Optional)

sudo add-apt-repository ppa:webupd8team/atom
sudo apt-get update
sudo apt-get install atom

Restricted extras for media codecs (Optional)

sudo apt-get install ubuntu-restricted-extras 

Flash plugin (Optional)

sudo apt-get install flashplugin-installer
ssh-keygen -t rsa -b 2048 -C "contact@imsheth.com"
ls ~/.ssh/*.pub
cat ~/.ssh/id_rsa.pub

Google Chrome Credit

64 bit

sudo apt-get install libxss1 libappindicator1 libindicator7
wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
sudo dpkg -i google-chrome*.deb

32 bit

sudo apt-get install libxss1 libappindicator1 libindicator7
wget https://dl.google.com/linux/direct/google-chrome-stable_current_i386.deb
sudo dpkg -i google-chrome*.deb

If error messages pop up then run the command

sudo apt-get install -f
sudo dpkg -i google-chrome*.deb

To start the browser

google-chrome

This installs a needed library for Google Chrome, then downloads the latest version of Chrome to a temporary directory and installs it

During the installation a PPA is added to your system so that Google Chrome receives the latest updates whenever you check for system updates

Install via ubuntu software center

Mozilla Firefox

Dropbox

VLC

XBMC

Skype

pdfsam

Fix Skype Credit

To fix skype missing indicator in tray

sudo apt-get install sni-qt:i386

Install after downloading from website

Java Development Kit 7 (OpenJDK)

Installation Credit
sudo apt-get install openjdk-7-jdk
Set variables Credit
echo "export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64" >> ".profile"
echo "export PATH=\$PATH:/usr/lib/jvm/java-7-openjdk-amd64/jre/bin" >> ".profile"
export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64
export PATH=$PATH:/usr/lib/jvm/java-7-openjdk-amd64/jre/bin
Safely remove Credit
sudo apt-get remove openjdk-7-jdk
sudo apt-get purge openjdk*

Java Development Kit 8 (Oracle)

Installation Credit
sudo add-apt-repository ppa:webupd8team/java
sudo apt update
sudo apt install oracle-java8-installer
javac -version
sudo apt install oracle-java8-set-default

Apache2 Credit

sudo apt-get install apache2
To prevent Apache from autostart when booting up (Optional)
sudo update-rc.d -f apache2 remove
To restore Apache back to the autostart list (Optional)
sudo update-rc.d apache2 defaults
Enabling mod_rewrite on apache2, for CakePHP (Optional)
sudo a2enmod rewrite
Restart the apache
sudo /etc/init.d/apache2 restart

MariaDB Credit

Install the repo manager, if not installed (Optional)
sudo apt-get install software-properties-common
Import the GnuPG signing key
sudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xcbcb082a1bb943db
Create new repository file by running the commands below.
sudo subl /etc/apt/sources.list.d/mariadb.list
MariaDB 10.0 repository list - created 2015-01-26 10:51 UTC
http://mariadb.org/mariadb/repositories/

deb http://mariadb.bytenet.in//repo/10.0/ubuntu utopic main
deb-src http://mariadb.bytenet.in//repo/10.0/ubuntu utopic main
Update system and install mariadb-server
sudo apt-get update
sudo apt-get install mariadb-server
Install mysql
sudo apt-get install mysql-server libapache2-mod-auth-mysql php5-mysql
We need to tell MySQL to generate the directory structure it needs to store its databases and information. We can do this by typing :
sudo mysql_install_db
All running threads (in mysql)
mysql > show process list;

PHP5 and phpmyadmin Credit

Install php5
sudo apt-get install php5 libapache2-mod-php5 php5-mysql
Install phpmyadmin
sudo apt-get install phpmyadmin
Answers to prompts
1. Web server to reconfigure automatically: answer ‘apache2′.
2. Configure database for phpmyadmin with dbconfig-common? – answer ‘NO’.
Copy over the the PHPMyAdmin Apache conf file over to the conf-available directory (for mysql)
sudo cp /etc/phpmyadmin/apache.conf /etc/apache2/conf-available/phpmyadmin.conf
Enable the Apache conf file using a2enconf (for mysql)
sudo a2enconf phpmyadmin
Change default listening port
Edit
sudo subl /etc/apache2/ports.conf
Change
Listen 80
Edit
sudo subl /etc/apache2/sites-enabled/000-default.conf
Change
Listen 80

Changing the default webroot for apache 2

Include the following line in /etc/apache2/apache2.conf
Include /etc/phpmyadmin/apache.conf
1. /etc/apache2/sites-enabled/000-default.conf
change
/var/www/html
to (folder required to be existing)
/home/starscream/public_html
2. /etc/apache2/apache2.conf file
change
<Directory /var/www/>
 Options Indexes FollowSymLinks
 AllowOverride None
 Require all granted
</Directory>
to
<Directory /home/starscream/public_html>
  Options Indexes FollowSymLinks
  AllowOverride None
  Require all granted
</Directory>
3. Configuration for CakePHP, all following lines too (Optional)
<Directory />
    Options FollowSymLinks
    AllowOverride All
</Directory>

<Directory /home/starscream/public_html>
    Options Indexes FollowSymLinks MultiViews
    AllowOverride All
    Order Allow,Deny
    Allow from all
</Directory>
Take ownership and hange file permissions of webrooot

Nginx Credit

Install nginx
sudo apt-get update
sudo apt-get install nginx
We can make sure that our web server will restart automatically when the server is rebooted by typing
sudo update-rc.d nginx defaults
This should already be enabled by default, so you may see a message like this:

System start/stop links for /etc/init.d/nginx already exist.

This just means that it was already configured correctly and that no action was necessary. Either way, your Nginx service is now configured to start up at boot time.

Changing the default webroot for nginx / adding virtual host/s Credit

Add entry in hosts
sudo subl /etc/hosts


127.0.0.1	localhost
127.0.1.1	starscream
127.0.0.1	angular.example.com

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
Create virtual host by configuring server block
sudo subl /etc/nginx/sites-enabled/example

server {
  listen 80;
  server_name angular.example.com;
  root /home/starscream/public_html/example_web;
  index app/index.html;
  location /{
      try_files $uri /app/index.html;
  }
}
Create a link and reload server
sudo ln -s example /etc/nginx/sites-available/example
sudo service nginx reload

NVM on macOS 12.3.1 Credit1 Credit2

Install nvm
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
Export variables and load nvm
export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
Verify NVM
command -v nvm
# Gives
nvm
List all available LTS versions of Node.js
nvm ls-remote
List all installed versions of Node.js available locally on your machine
nvm ls
Add paths to your shell profile
# export NVM_DIR="$HOME/.nvm"
# [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
Reload .bash_profile from the command line Credit
source ~/.bash_profile
Install the latest version of Node.js to your machine
nvm install node
Install the specified version of Node.js to your machine
nvm install <SPECIFIC_NODE_VERSION>
Set the version of Node.js running locally to the latest version downloaded
nvm use node
Set the version of Node.js running locally to the version specified
nvm use <SPECIFIC_NODE_VERSION>

React Native on macOS 10.15.3 Credit

Know your JDK flavor Credit
java -version
# Gives following for oracle
java version "1.8.0_172"
Java(TM) SE Runtime Environment (build 1.8.0_172-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.172-b11, mixed mode)
If you have already installed JDK on your system, make sure it is JDK 8 or newer
brew cask install adoptopenjdk/openjdk/adoptopenjdk8
Install Android
brew install watchman
# If it gives following error
  Updating Homebrew...
  Error: The following formula
    [#<Dependency: "python@3.8" []>, #<Options: []>]
  cannot be installed as binary package and must be built from source.
  Install the Command Line Tools:
    xcode-select --install
# Then execute below commands
xcode-select --install
brew install watchman

Install Android Developer Studio Credit
"Custom" setup
1) Android SDK
2) Android SDK Platform
3) Performance (Intel ® HAXM) (See here for AMD)
4) Android Virtual Device
5) Set home
ls -l /Library/Java
# Gives
/Library/Java/JavaVirtualMachines/jdk1.8.0_172.jdk/Contents/Home
6) Android 9 (Pie)
7) Android SDK Platform 28
8) Intel x86 Atom_64 System Image or Google APIs Intel x86 Atom System Image
9) Next, select the "SDK Tools" tab and check the box next to "Show Package Details" here as well. Look for and expand the "Android SDK Build-Tools" entry, then make sure that 28.0.3 is selected.
Add paths to your shell profile
export ANDROID_HOME=$HOME/Library/Android/sdk >> ~/.bash_profile
export PATH=$PATH:$ANDROID_HOME/emulator >> ~/.bash_profile
export PATH=$PATH:$ANDROID_HOME/tools >> ~/.bash_profile
export PATH=$PATH:$ANDROID_HOME/tools/bin >> ~/.bash_profile
export PATH=$PATH:$ANDROID_HOME/platform-tools >> ~/.bash_profile

Realm on macOS 10.15.3

Install realm object server
npm install -g realm-object-server
# If it gives
“ERROR:root:code for hash md5 was not found”
# Then [Credit](https://stackoverflow.com/a/60894282/3152654)
brew unlink openssl
brew reinstall python@2
brew link --overwrite python@2
python -v
python --version
brew link --overwrite python@2
ls /usr/local/Cellar/openssl
brew switch openssl 1.0.2o_2

If you have trouble running a ros command it may be due to your version of NVM. Try running nvm use 8 in your terminal. [Credit] (realm/realm-object-server#435 (comment))

Node.js and sails.js

Install nodejs
sudo apt-get install python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs
sudo apt-get install -y build-essential
Install nodejs
sudo apt-get install python-software-properties python g++ make
curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
sudo apt-get install -y nodejs
Install sails (May show exit 0 status error, be patient and wait for the prompt to return)
sudo npm -g --verbose install sails
Remove PPA
sudo add-apt-repository --remove ppa:chris-lea/node.js
Create a new app
sails new testProject
Lift the server (serves at http://localhost:1337/ by default)
cd testProject
sails lift
Generate a REST API (serves at http://localhost:1337/user by default)
sails generate api user
sails lift
If npm fails installing modules
sudo rm -r node_modules && npm install

Jmeter

Install Jmeter, prerequisite - Java
brew install jmeter
jmeter
Testing with Jmeter

Reference1 Reference2 Reference3 Reference4

Ionic framework for x68_64 Credit1 Credit2 Credit3

Add i386 architecture
sudo dpkg --add-architecture i386
Android SDK requires some x86 architecture libraries even on x64 system
sudo apt-get install -qq -y libc6:i386 libgcc1:i386 libstdc++6:i386 libz1:i386
Update and upgrade installation
sudo apt-get update && sudo apt-get upgrade
Download latest Android Linux SDK for x64 as of 26-11-2015 to desktop
http://dl.google.com/android/android-sdk_r24.4.1-linux.tgz
Rename downloaded zip to android-sdk.tgz
Change pwd to desktop
cd ~/Desktop
Unzip, extract, from Android SDK archive file to /opt
sudo tar zxf "android-sdk.tgz" -C "/opt"
Change pwd to /opt and rename folder
cd "/opt" && sudo  mv "android-sdk-linux" "android-sdk"
Set folder permissions and ownership
cd "/opt" && sudo chown root:root "android-sdk" -R
cd "$INSTALL_PATH" && sudo chmod 777 "android-sdk" -R
Change to HOME
cd ~/
Add Android and NPM paths to the profile to preserve settings on boot
echo "export PATH=\$PATH:/opt/android-sdk/tools" >> ".profile"
echo "export PATH=\$PATH:/opt/android-sdk/platform-tools" >> ".profile"
echo "export PATH=\$PATH:/usr/bin/node/bin" >> ".profile"
Add Android and NPM paths to the temporary user path to complete installation
export PATH=$PATH:/opt/android-sdk/tools
export PATH=$PATH:/opt/android-sdk/platform-tools
export PATH=$PATH:/usr/bin/node/bin
Install JDK and Apache Ant
sudo apt-get -qq -y install default-jdk ant --verbose
If java is properly installed you can find it's location, by using the following command (Don't forget to remove bin/java from the end of the path while putting it into JAVA_HOME)
readlink -f $(which java)
Set JAVA_HOME and PATH based on the default OpenJDK installed
echo "export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64" >> ".profile"
echo "export PATH=\$PATH:/usr/lib/jvm/java-7-openjdk-amd64/jre/bin" >> ".profile"
export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64
export PATH=$PATH:/usr/lib/jvm/java-7-openjdk-amd64/jre/bin
Add JAVA_HOME="/usr/lib/jvm/java-7-openjdk-amd64" to /etc/environment
sudo nano /etc/environment
Install Apache Cordova and Ionic Framework
sudo npm install -g cordova --verbose
sudo npm install -g ionic --verbose
Reboot, and install platform tools
android
Creating sample app
ionic start ExampleProject blank
cd ExampleProject
ionic platform add android
ionic build android

Bower

Installing bower
sudo npm install -g bower --verbose
Interactively create a bower.json with bower init
bower init
Install package and add it to bower.json dependencies
bower install <package> --save
Install package and add it to bower.json devDependencies
bower install <package> --save-dev
Install gulp globally
sudo npm install --global gulp --verbose
Install gulp and your required project dependencies in devDependencies
sudo npm install --save-dev gulp --verbose
sudo npm install --save-dev gulp-notify --verbose
sudo npm install --save-dev gulp-rename --verbose
sudo npm install --save-dev gulp-stylus --verbose
sudo npm install --save-dev gulp-uglify --verbose
sudo npm install --save-dev gulp del --verbose
Create a gulpfile.js at the root of your project
// Sample gulpfile.js

// Load required gulp modules
var gulp = require('gulp'),
    uglify = require('gulp-uglify'),
    rename = require('gulp-rename'),
    notify = require('gulp-notify'),
    stylus = require('gulp-stylus'),
    del = require('del');

// Defining gulp task for performing cleaning of built files
gulp.task('clean', function(cb) {
    del(['app/*.min.js', 'app/assets/css/build/**/*.css'], cb)
});

// Defining gulp task for uglification/minification of .js files
gulp.task('scripts', function() {
    return gulp.src('app/*.js')
        .pipe(rename({
            suffix: '.min'
        }))
        .pipe(uglify())
        .pipe(gulp.dest('app/'));
        // .pipe(notify({
        //     message: 'Uglification complete !'
        // }));
});

// Defining gulp task to get .styl files and render
gulp.task('styles', function() {
    return gulp.src('./app/assets/css/*.styl')
        .pipe(rename({
            suffix: '.min'
        }))
        .pipe(stylus({
            compress: true
        }))
        .pipe(gulp.dest('./app/assets/css/build'));
        // .pipe(notify({
        //     message: 'Minification complete !'
        // }));
});

// Defining watch task watches specified sources for changes and reloads on change
gulp.task('watch', function() {

    // Watch .js files
    gulp.watch('app/main.js', ['scripts']);

    // Create LiveReload server
    livereload.listen();

    // Watch any files in dist/, reload on change
    gulp.watch(['app/dist/**']).on('change', livereload.changed);

});

// A default task is a gulp that runs when you just run just 'gulp'
gulp.task('default', ['clean'], function() {

    gulp.start('scripts', 'styles');

});
Run gulp
gulp

Grunt

Install grunt cli
sudo npm install -g grunt-cli --verbose

Yeoman

Install yeoman
sudo npm install -g yo --verbose

Stylus

Install stylus
sudo npm install stylus -g --verbose
Compiles stylus file (to compressed file.css)
stylus -c file.styl
Compiles stylus file (to compressed file.css)
stylus file.styl

AngularJS

Installing angularjs
bower install angular

Composer

Downloading and installing composer
sudo curl -sS https://getcomposer.org/installer | php
Making composer available globally
sudo mv composer.phar /usr/local/bin/composer
Adding to PATH
sudo PATH=$PATH:/home/starscream/.composer/vendor/bin/
Installing or updating dependencies
sudo composer install --verbose
sudo composer update --verbose

Laravel

Enabling/disabling maintenance mode
php artisan down
php artisan up
Lifting development server and on specific port
php artisan serve
php artisan serve --port=8001
To publish vendor settings (after updating/installing via composer)
php artisan vendor:publish

MongoDB community edition on macOS 10.15.3 Credit

Prerequisites
  1. XCode
  2. Homebrew
Tap the MongoDB Homebrew Tap
brew tap mongodb/brew
Install MongoDB Community Edition
brew install mongodb-community@4.2

In addition to the binaries, the install creates:

  • the configuration file (/usr/local/etc/mongod.conf)
  • the log directory path (/usr/local/var/log/mongodb)
  • the data directory path (/usr/local/var/mongodb)
To run MongoDB (i.e. the mongod process) as a macOS service, issue the following:
brew services start mongodb-community@4.2
To stop a mongod running as a macOS service, use the following command as needed:
brew services stop mongodb-community@4.2
To run MongoDB (i.e. the mongod process) manually as a background process, issue the following:
mongod --config /usr/local/etc/mongod.conf --fork
To stop a mongod running as a background process, connect to the mongod from the mongo shell, and issue the shutdown command as needed.
To verify that MongoDB is running, search for mongod in your running processes:
ps aux | grep -v grep | grep mongod
You can also view the log file to see the current status of your mongod process:
/usr/local/var/log/mongodb/mongo.log.
Connect and Use MongoDB
mongo
Install couchdb
sudo apt-get install couchdb
Enable CORS (nodejs required)
sudo npm install -g add-cors-to-couchdb
add-cors-to-couchdb
As a root user, edit /etc/couchdb/local.ini and uncomment the bind_address line. Also change 127.0.0.1 to 0.0.0.0. Now everyone can access the database.
sudo subl /etc/couchdb/local.ini
Access via futon
http://localhost:5984/_utils/
Install fauxton
sudo npm install -g fauxton
fauxton
fauxton --port=8001
Start/Stop/Restart couchdb
sudo service couchdb start
sudo service couchdb stop
sudo service couchdb restart

Infinidb export database to remote server

Generate sql dump on source server
mysqldump  --set-gtid-purged=OFF --user=root --host=localhost --protocol=tcp --port=3307 --default-character-set=utf8 --skip-triggers "dbtoexport" > /pathtoexportlocation/dbtoexport.sql
Compress file on source server
tar -zcvf dbtoexport.tar.gz dbtoexport.sql
Get compressed file on destination server via scp
scp  user@127.0.0.1:/pathtoexportlocation/dbtoexport.tar.gz /pathtoimportlocation
Decompress file on destination server
tar -zxvf dbtoexport.tar.gz
Import into database (assuming dbtoexport exists and is empty)
idbmysql  dbtoexport < dbtoexport.sql

Change data directory in Infinidb (CentOS) Credit

Stop Infinidb
cc stopSystem
Copy existing database directories or new ones to pathtofolder which is the new path
cp /usr/local/Calpont/mysql/db /pathtofolder/
cp /usr/local/Calpont/data /pathtofolder/
cp /usr/local/Calpont/data1 /pathtofolder/
Assign ownership (same ownership and permission as existing, defaults to mysql:mysql)
chown -R mysql:mysql  /pathtofolder/data
chown -R mysql:mysql  /pathtofolder/db
chown -R mysql:mysql  /pathtofolder/data1
Link folders
ln -s /pathtofolder/db /usr/local/Calpont/mysql/db
ln -s /pathtofolder/data /usr/local/Calpont/data
ln -s /pathtofolder/data1 /usr/local/Calpont/data1
Check selinux status
getEnforce
Disable setEnfoce, if enabled
sudo setEnfoce 0
Stop Infinidb
cc startSystem

Infinidb common tweaks Credit

Edit my.cnf
sudo vim /usr/local/Calpont/mysql/my.cnf

# Change following values
max_allowed_packet= 64MB
max_length_for_sort_data= 8388608

MySQL export database to remote server

Generate sql dump on source server
mysqldump  --set-gtid-purged=OFF --user=root --host=localhost --protocol=tcp --port=3306 --password --default-character-set=utf8 --skip-triggers "dbtoexport" > /pathtoexportlocation/dbtoexport.sql
Compress file on source server
tar -zcvf dbtoexport.tar.gz dbtoexport.sql
Get compressed file on destination server via scp
scp  user@127.0.0.1:/pathtoexportlocation/dbtoexport.tar.gz /pathtoimportlocation
Decompress file on destination server
tar -zxvf dbtoexport.tar.gz

Import into database (assuming dbtoexport exists and is empty)
mysql -u root -p dbtoexport < dbtoexport.sql

Change data directory in MySQL (CentOS)

Stop MySQL
sudo /etc/init.d/mysql stop
Copy the existing data directory (default located in /var/lib/mysql)
sudo cp -R -p /var/lib/mysql /pathtofolder
Edit the MySQL configuration file, change the datadir path (default /var/lib/mysql) to the new data directory
sudo vim /etc/mysql/my.cnf
Edit apparmor profile, find and replace /var/lib/mysql (default path) with the new path to directory
sudo vim /etc/apparmor.d/usr.sbin.mysqld
Restart the AppArmor profiles
sudo /etc/init.d/apparmor reload
Restart MySQL
sudo /etc/init.d/mysql restart

Backing up specific database backup for Mysql and Infinidb

Shell script
now=$(date +"%Y%m%d_%H%M%S")
mysqlFileName="mysqldbname"$now".sql"
mysqldump  -u root -p root mysqldbname > $mysqlFileName
infinidbFileName="infinidbdbname"$now".sql"
mysqldump  --defaults-file=/usr/local/Calpont/mysql/my.cnf -u root infinidbdbname > $infinidbFileName

MySQL skip-hostname resolution Credit

Add skip-name-resolve to speed up MySQL and avoid problems
sudo vim /etc/mysql/my.cnf

# Skip reverse DNS lookup of clients
skip-name-resolve
Restart MySQL
sudo /etc/init.d/mysql restart

MySQL regex replace Credit

Ubuntu tricks / commands Master Reference

Environment Variables Credit

export EDITOR=nano

printenv printenv TERM echo $TERM

export LC_ALL= unset LC_ALL

It is also possible to use the "-n" switch to the export command in order to un-export an environment variable and therefore demote it to become a shell variable while preserving its value. export -n LC_ALL

Session-wide environment variables Suitable files for environment variable settings that should affect just a particular user (rather than the system as a whole) are ~/.pam_environment and ~/.profile. After having edited one of those files, you should re-login in order to initialize the variables.

~/.profile In this file you can also place environment variable assignments, since it gets executed automatically by the DisplayManager during the start-up process desktop session as well as by the login shell when one logs in from the textual console. This is a ~/.profile equivalent of the above example: export FOO=bar export PATH="$PATH:$HOME/MyPrograms"

Shell config files such as ~/.bashrc, ~/.bash_profile, and ~/.bash_login are often suggested for setting environment variables. While this may work on Bash shells for programs started from the shell, variables set in those files are not available by default to programs started from the graphical environment in a desktop session.

System-wide environment variables A suitable file for environment variable settings that affect the system as a whole (rather than just a particular user) is /etc/environment. An alternative is to create a file for the purpose in the /etc/profile.d directory.

/etc/environment

This file is specifically meant for system-wide environment variable settings. It is not a script file, but rather consists of assignment expressions, one per line.

FOO=bar Note: Variable expansion does not work in /etc/environment.

/etc/profile.d/*.sh

Files with the .sh extension in the /etc/profile.d directory get executed whenever a bash login shell is entered (e.g. when logging in from the console or over ssh), as well as by the DisplayManager when the desktop session loads.

You can for instance create the file /etc/profile.d/myenvvars.sh and set variables like this:

export JAVA_HOME=/usr/lib/jvm/jdk1.7.0 export PATH=$PATH:$JAVA_HOME/bin

Popup notification
sudo apt-get install libnotify-bin
notify-send 'Title of the message' 'Text of the message'
notify-send -i /home/sathiya/deal.ico 'Deal success'
notify-send -u critical -i "notification-message-IM" 'Boss !!' 'Am done with the execution'
command && notify-send
Lock screen
gnome-screensaver-command --lock
For taking file ownership
sudo chown -R starscream: /opt/lampp/htdocs/Dropbox/xampp-root
For changing file permissions
sudo chmod -R 777  /opt/lampp/htdocs/Dropbox/xampp-root
For changing .pem file permissions
chmod 400 mykeyfile.pem
Start apache2
sudo /etc/init.d/apache2 start 

or

sudo service apache2 start
Stop apache2
sudo /etc/init.d/apache2 stop   

or

sudo service apache2 stop
Restart apache2
sudo /etc/init.d/apache2 restart 

or

sudo service apache2 restart
Start/restart/stop/reload configuration nginx
sudo service nginx start
sudo service nginx restart
sudo service nginx stop
sudo service nginx reload
To open terminal before login
^ + Alt + F2
To reset unity
dconf reset -f /org/compiz/
unity --reset-icons
Reinstall Unity in Ubuntu 14.04 to fix system freeze issue
sudo apt-get update
sudo apt-get install --reinstall ubuntu-desktop
sudo apt-get install unity
sudo shutdown -r now
Fixing Unity freeze issue with Nvidia graphics
sudo apt-get update
sudo apt-get install --reinstall ubuntu-desktop
sudo apt-get install unity
sudo apt-get remove --purge nvidia*
sudo shutdown -r now
Redirecting stderr and stdout to files
node --max_old_space_size=8192  app.js 2>/path/error.log > /path/console.log
System stats with sar Credit
sar -r

Crontab

List
crontab -l
Edit
crontab -e

SSH Tunneling Credit

Multiport tunneling (-4 required to force IPv4 - useful for RDP, -L 23305:localhost:3305 is in the form of -L local-port:host:remote-port, -i for private key)
ssh -4 -L 23305:localhost:3305 -L 23306:localhost:3306  starscream@127.0.0.1
ssh -4 -L 23305:localhost:3305 -L 23306:localhost:3306 -i private_key.pem starscream@127.0.0.1

Disk commands Credit1 Credit2

Free space (Display in KB, MB, or GB)
df -h
Usage (The weight (size) of subdirectories under the root directory (-d 1, trailing /) with a sum total at the end (-c), all displayed in human-readable format (-h) without traversing into other filesystems (-x). Useful when /var /tmp or other directories are on separate storage from the root directory:)
du --max-depth=1 -c -h

Secure Copy

Copy file from server
sudo scp starscream@127.0.0.1:/data/filetobecopied.txt /home/Desktop/
Installation
sudo apt-get install screen
List all screens
screen -ls
Create a new screen
screen -S foo
Reattach screen
screen -r foo
Detach screen
Keypress = Ctrl A D

Finding and deleting files Credit

Delete all files with a specific extension (e.g. .bak) from current directory and all subfolders (Also, make sure that -delete is the last argument in your command. If you put it before the -name *.bak argument, it will delete everything.)
find . -name "*.bak" -type f -delete
To find/see exactly which files you will remove
find . -name "*.bak" -type f

Tar files

List contents Credit
tar -tvf foo.tar.gz '*filenamesearchterm*'
Extract specific file Credit
tar -xf foo.tar.gz /pathtofile/filename.ext

File links Credit

ln -s /pathtofolder/foldername filename

Users

Delete user & remove home directory Credit
sudo userdel username
sudo rm -r /home/username

Safely uninstall ubuntu from windows dual boot PC Credit

Boot from Windows CD/DVD and choose “Repair” when it shows up. Choose command prompt on the resulting screen and run the following two commands:
bootrec /fixmbr
bootrec /fixboot

New file permissions to inherit from parent directory Credit

Raising the maximum number of file descriptors Credit

Allow SFTP (CentOS) Credit

sudo vim /etc/ssh/sshd_config
# Add “Subsystem sftp internal-sftp”

service sshd restart

macOS 10.12.6

Increase ulimit Credit

sudo launchctl limit maxfiles unlimited

Install pip Credit

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py --user

Setting environment variables

vim ~/.bash_profile
Add export PATH=${PATH}:/Users/ishansheth/Library/Python/2.7/bin to bash_profile and then export for current session and then check version to verify installation
export PATH=${PATH}:/Users/ishansheth/Library/Python/2.7/bin
pip --version

Install maven Credit

Download zip from here and add it to path and then check version to verify installation
vim ~/.bash_profile
export MAVEN_HOME="/Users/ishan/public_html/apache-maven-3.6.0"
export PATH=${PATH}:${MAVEN_HOME}/bin
mvn -version

About

This is the repo for updating my current pc configuration, works for ubuntu 14.10 and macOS 10.12.6 (where specified)

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