P7h

Lifecycle Phase		Description
validate		Validates whether project is correct and all necessary information is available to complete the build process.
initialize		Initializes build state, for example set properties
generate-sources		Generate any source code to be included in compilation phase.
process-sources		Process the source code, for example, filter any value.
generate-resources		Generate resources to be included in the package.
process-resources		Copy and process the resources into the destination directory, ready for packaging phase.
compile		Compile the source code of the project.
process-classes		Post-process the generated files from compilation, for example to do bytecode enhancement/optimization on Java classes.
generate-test-sources		Generate any test source code to be included in compilation phase.

P7h

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;

P7h

import os

folder_name = 'D:/issue/'

for i in range(1, 79):
    fileName = folder_name + str(i) + ".tsv"
    if not os.path.isfile(fileName):
        with open(fileName, 'w') as f:
            f.write('word\tcount\n')
            f.close()

P7h

import os

# Current working directory where files and folders are present.
rootDir = os.getcwd()

# Destination directory to copy files.
destinationDir = 'D:/GBR/'

# Walk thru the directories in this root directory.
for dirName, subdirList, fileList in os.walk(rootDir):

P7h

sudo service iptables save
sudo service iptables stop
sudo chkconfig iptables off

# Ubuntu
sudo ufw status
sudo ufw off

P7h

# This shell script displays hostname and IP Address of the Ubuntu machine before the login prompt.
# Add this file to '/etc/network/if-up.d/' and '/etc/network/if-post-down.d/' folders and mark them as executables.

# Display Ubuntu default information [the current version of Ubuntu].
cat /etc/issue.net > /etc/issue

# Display the hostname.
hostname >> /etc/issue

# Display the IP Address of eth0.

P7h

# List of plugins
# Supports `github_username/repo` or full git URLs
set -g @tpm_plugins "           \
  tmux-plugins/tpm              \
  tmux-plugins/tmux-sensible    \
  tmux-plugins/tmux-resurrect   \
"

# Other examples:
# github_username/plugin_name    \

P7h

# Not advisable. Do this ONLY if you understand what you are doing!
# This will terminate all your tmux or screen sessions, if you have any work yet to be saved, you will not be able to recover if you do this.

# Kill all the tmux sessions
tmux ls | grep : | cut -d. -f1 | awk '{print substr($1, 0, length($1)-1)}' | xargs kill

# Kill all the detached screen sessions
screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs kill

P7h

# Steps to build and install tmux from source.
# Takes < 25 seconds on EC2 env [even on a low-end config instance].

VERSION=2.7
sudo yum -y remove tmux
sudo yum -y install wget tar libevent-devel ncurses-devel
wget https://github.com/tmux/tmux/releases/download/${VERSION}/tmux-${VERSION}.tar.gz
tar xzf tmux-${VERSION}.tar.gz
rm -f tmux-${VERSION}.tar.gz
cd tmux-${VERSION}

P7h

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname