install.sh

#!/bin/bash
echo "install netstat to check status"
apt install net-tools

echo "I will prepare linux for updates"
apt-get autoremove -y
apt-get update -y

echo "I will install git"
apt-get install git
git --version

echo "I will instal nodejs or update"
npm install -g npm

echo "I will install Node environment to start project"
apt-get install nodejs npm -y
npm --version

echo "I will install NPM packages on this project ..."

full_path=$(realpath $0)
dir_path=$(dirname $full_path)
#echo $dir_path

which npm
if [ $? -eq 0 ]
then
  ls -d $dir_path
  npm install --prefix $dir_path
  npm install forever -g
#echo "The script ran ok"
  exit 0
else
  echo "npm is not installed on this system!" >&2
  exit 1
fi

# give rights to execute
chmod u+r+x *.sh

#CODE NO
#1 - Catchall for general errors
#2 - Misuse of shell builtins (according to Bash documentation)
#126 - Command invoked cannot execute
#127 - “command not found”
#128 - Invalid argument to exit
#128+n - Fatal error signal “n”
#130 - Script terminated by Control-C
#255\* - Exit status out of range