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

syntax:

#!/bin/bash

dir_name=$1

start=$2

end=$3

for ((i=$start; i<=$end; i++ ))

do

mkdir "$dir_name$i"

done

echo "your directories generated successfully"

error will come, due to not having permission. so, give it permission

chmod 700 createDirectories.sh

then, run ./createDirectories.sh day 01 90

I have taken an example from 01 to 90. you can take as your wish.

Example 2: When the script is executed as

./createDirectories.sh Movie 20 50 then it creates 50 directories as Movie20 Movie21 Movie23 ...Movie50

Create a Script to backup all your work done till now.

syntax: #!/bin/bash

backup_dir="/home/soumya/devops/dirs"

backup_date="$(date +%Y-%m-%d_%H%M%S)"

backup_name="backup_${backup_date}"

backup_path="${backup_dir}/${backup_name}"

tar czf "$backup_path.tar.gz" .

echo "Backup crated successfully at: $backup_path.tar.gz"

bash backup.sh

Create 2 users and just display their Usernames

syntax:

sudo useradd test

sudo passwd test

sudo useradd test2

sudo passwd test2

sudo cat /etc/passwd