Forem: shiv

GMAIL SSMTP MAIL SERVER INSTALLATION SHELL SCRIPT FOR UBUNTU

shiv — Sat, 22 Aug 2020 05:22:50 +0000

A Simple Gmail SSMTP(Secure Simple Mail Transfer Protocol) fully automated installation shell script for all Ubuntu versions.SSMTP can be used only for sending mails alone.It doesn't has any features life receiving mails,drafts etc.

Updating the system

   apt update -y

Installing mailutils

   apt-get install mailutils -y

Installing smtp mail server

   apt-get install ssmtp -y

Gets the mail id for mailing purposes, Which is the sender mail address and from this mail id mails will be sent ,Stores in ssmtp.conf file

 echo -n  "provide your email id:" 
 read  mail
 echo "AuthUser=$mail" >> /etc/ssmtp/ssmtp.conf

Gets the respective mail password for mailing purposes.

 echo -n "Provide your email password:"
 read  password;
 echo "AuthPass=$password" >> /etc/ssmtp/ssmtp.conf

Some configurations will be updated in-order to do a secure mail transfer.587 ssmtp port.

echo "mailhub=smtp.gmail.com:587" >> /etc/ssmtp/ssmtp.conf
echo "UseSTARTTLS=YES" >> /etc/ssmtp/ssmtp.conf
echo "FromLineOverride=YES" >> /etc/ssmtp/ssmtp.conf

SSMTP Fully Automated Installation Shell Script Available in Github

Install Google Keep Notes On Ubuntu 20.04

shiv — Wed, 29 Jul 2020 09:27:59 +0000

Install Google Keep Notes In Ubuntu 20.04

To Install Google keep first need to install Google chrome.

1.Downloading Google Chrome:

 wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb

2.Installing Google Chrome:

 sudo apt install ./google-chrome-stable_current_amd64.deb

3.Open Chrome browser Use this link: Google Keep for Ubuntu

Google Keep - Notes and Lists Page will be opened.Select Add Button.

4.Once you installed this app, type

     chrome://apps/

in Google chrome address bar to go to the Chrome Apps page.

There you’ll see a list of app shortcuts including Google Keep. Right-click on the icon and select "Create Shortcuts…"

RELATIONAL OPERATORS OF WHILE LOOP IN LINUX/UNIX SHELL SCRIPT

shiv — Thu, 23 Jul 2020 16:48:36 +0000

Unix / Linux - Shell Relational Operators:

Relational operators that are purely supports numeric values.It does not support any other strings etc.

1. -eq operator

compares whether the value of two operands are equal or not.If true then -eq operator becomes true.

Example:

#!/bin/sh
a=30
b=30

if [ $a -eq $b ]
then
echo "$a -eq $b : a is equal to b"
else
echo "$a -eq $b: a is not equal to b"
fi

Output:

30 -eq 30: a is equal to b

2. -ne operator

Compares whether the value of two operands are not equal or not.If true,then -ne operator becomes true.

Example:

#!/bin/sh
a=30
b=50

if [ $a -ne $b ]
then
echo "$a -ne $b: a is not equal to b"
else
echo "$a -ne $b : a is equal to b"
fi

Output:

30 -ne 50: a is not equal to b

3. -gt operator

Compares whether the value of left operand is greater than the value of right operand.If true,then -gt operator becomes true.

Example:

#!/bin/sh
a=60
b=30

if [ $a -gt $b ]
then
echo "$a -gt $b: a is greater than b"
else
echo "$a -gt $b: a is not greater than b"
fi

Output:

60 -gt 30: a is greater than b

4. -lt operator

Compares whether the value of left operand is less than the value of right operand.If true, then -lt operator becomes true.

Example:

#!/bin/sh
a=40
b=70

if [ $a -lt $b ]
then
echo "$a -lt $b: a is less than b"
else
echo "$a -lt $b: a is not less than b"
fi

Output:

40 -lt 70: a is less than b

5. -ge operator

Compares whether the value of left operand is greater than or equal to the value of right operand.If True, then -ge operator becomes true.

Example:

#!/bin/sh
a=50
b=20

if [ $a -ge $b ]
then
echo "$a -ge $b: a is greater or equal to b"
else
echo "$a -ge $b: a is not greater or equal to b"
fi

Output:

50 -ge 20: a is greater or equal to b

6. -le operator

Compares whether the value of left operand is less than or equal to the value of right operand.If true, then the it becomes true.

Example:

#!/bin/sh
a=40
b=40

if [ $a -le $b ]
then
echo "$a -le $b: a is less or equal to b"
else
echo "$a -le $b: a is not less or equal to b"
fi

Output:

40 -le 40: a is less or equal to b

DOCKER INSTALLATION SHELL SCRIPT

shiv — Tue, 21 Jul 2020 12:54:58 +0000

!/bin/bash

Checks whether docker installed or not:

   if [ ! -x /var/lib/docker ]; then

echo "INSTALLING docker"

Installing software dependencies:

     echo "Y" | apt install apt-transport-https ca-certificates curl software-properties-common

Adding the Docker key in repository:

     curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

    add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable"

Updating the system:

    echo "Y" | apt update

Installing Docker:

    apt-cache policy docker-ce

    echo "Y" | sudo apt install docker-ce

     echo "docker successfully installed"

Shows message if docker already installed during initial check:

  else
   echo "DOCKER ALREADY INSTALLED"
   fi

Installation Shell Script for Docker Available in Github Repo

INSTALLATION SHELL SCRIPT PHP COMPOSER

shiv — Mon, 20 Jul 2020 11:40:45 +0000

!/bin/bash

Check wether composer installed or not:

  if [ ! -x /usr/local/bin/composer ]; then

echo "INSTALLING composer"

Checks the current php version & Install the dependencies:

    CURRENT=$(php -v | head -n 1 | cut -d " " -f 2 | cut -f1-2 -d".")

echo "Y" | apt install curl php$CURRENT-cli php$CURRENT-mbstring git unzip

Change the path to tilde directory & Downloads the composer setup file:

     cd ~

curl -sS https://getcomposer.org/installer -o composer-setup.php

It gets SHA384 composer value:

    HASH=$(curl https://composer.github.io/installer.sig | awk '{print $1}')

Preparing composer installation setup:

    php -r "if (hash_file('SHA384', 'composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

Installing Composer:

php composer-setup.php --install-dir=/usr/local/bin --filename=composer

Removes the downloaded setup file:

rm -rf ~/composer-setup.php

Message showing successfully installed:

   echo "SUCESSFULLY INSTALLED composer"

During Initial check if composer installed already it shows message:

    else
echo "ALREAY INSTALLED composer"
    fi

Installation shell script for php-composer available in github repo

REMOVE COMMANDS IN DOCKER

shiv — Mon, 20 Jul 2020 10:41:43 +0000

Removing the Every Unused:

To remove all stopped containers, dangling images, and unused networks:

         docker system prune

But above command doesn't remove the unused volumes.To Remove unused volume:

       docker system prune --volumes

Removing the Docker Container:

To remove all stopped containers

          docker container prune

To Stop and Remove all Containers

Stop's All Containers

  docker container stop $(docker container ls -aq)

Remove's All Stopped Containers

    docker container rm $(docker container ls -aq)

Removing All Images:

Removes all Dangling Images:

       docker image prune

Removes all Unused Images

      docker image prune -a

Removing All Unused Volumes:

       docker volume prune

Removing all unused network:

    docker network prune