Looping with numbers

 HACKERANK SOLUTIONS, LINUX SCRIPTING 

Use a for loop to display the natural numbers from  to .

Input Format

There is no input

Output Format

1
2
3
4
5
.
.
.
.
.
50

SOLUTION
Syntax for For Loop: 
for varname in list
do 
  Statements
done

CODE

for i in {1..50}
do 
  echo $i
done

A Personalized Echo

 HACKERANK SOLUTIONS, LINUX SCRIPTING 

Write a Bash script that accepts  as input and displays the greeting "Welcome (name)"

Input Format

There is one line of text,.

Output Format

One line: "Welcome (name)" (quotation marks excluded).
The evaluation will be case-sensitive.

Sample Input 0

Dan  

Sample Output 0

Welcome Dan  

Sample Input 1

Prashant

Sample Output 1

Welcome Prashant

Solution

Here, the read commad is used to take input from the user . 

CODE

read name
echo "Welcome" $name
 

Loops

HACKERANK SOLUTIONS, LINUX SCRIPTING 

 Your task is to use for loops to display only odd natural numbers from to.

Input Format

There is no input.

Constraints

-

Output Format

1
3
5
.
.
.
.
.
99  

Sample Input

-

Sample Output

1
3
5
.
.
.
.
.
99  

SOLUTION

-ne : Not Equal

code: 

for((i=0;i<100;i++))
do
x=$((i%2))
if [ $x -ne 0 ]
then
echo "$i"
fi
done

Bash Scripting

 HACKERANK SOLUTIONS, LINUX SCRIPTING 

Write a bash script that prints the string "HELLO".

Input Format

There is no input file required for this problem.

Output Format

HELLO

Sample Input

-

Sample Output

HELLO

SOLUTION:

ECHO is a command in Linux which is utilized to print text or string. It actually works like the "printf" command in C

echo "HELLO"