Shell Scripting- Part2

Write an Example of If else in Shell Scripting that takes2 inputs from user and compares them

  #!/bin/bash

  echo "Enter the first number"
  read firstnumber

  echo "Enter the second number"
  read secondnumber

  if [ $firstnumber -gt $secondnumber ]
  then
   echo "$firstnumber is the greatest"
  else
   echo "$secondnumber is the greatest"
  fi

Write a Shell Script to take user input(enter the day), input from arguments(enter your name) and print the variable

  #!/bin/bash
     echo "Hi there! Can you please tell me what day is it"
     read day

     echo "Hey $1, $day is a good day to start that thing which you have always been postponing :)"

Write a bash script createDirectories.sh that when the script is executed with three given arguments (one is the directory name and the second is the start number of directories and the third is the end number of directories ) it creates a specified number of directories with a dynamic directory name.

  #!/bin/bash

  cd /home/ubuntu/devops/batch3/shell/assignments

  directory=$1
  start_file=$2
  end_file=$3

  for ((i=start_file; i<=end_file; i++))
  do
   mkdir $1$i
  done

Automating the above script to run at 1 am every day using cron tab

  0 1 * * * . /home/ubuntu/devops/batch3/shell/assignments/backup.sh

Create 2 users and just display their Usernames

  ubuntu@ip-172-31-19-16:~$ sudo useradd user-1
  ubuntu@ip-172-31-19-16:~$ sudo useradd user-2
  ubuntu@ip-172-31-19-16:~$ sudo cat /etc/passwd | tail -2