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Exercises on the Bash track

Join the Bash Track
29 exercises to help you master Bash
easy

Hello World

The classical introductory exercise. Just say "Hello, World!"
strings
easy

Reverse String

Reverse a string
strings
easy

Two Fer

Create a sentence of the form "One for X, one for me."
control flow conditionals
strings
text formatting
easy

Grains

Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.
control flow conditionals
input validation
integers
math
easy

Scrabble Score

Given a word, compute the scrabble score for that word.
games
integers
easy

Armstrong Numbers

Determine if a number is an Armstrong number
integers
math
easy

Difference Of Squares

Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
control flow conditionals
control flow loops
math
easy

Error Handling

Implement various kinds of error handling and resource management
error handling
input validation
strings
easy

Hamming

Calculate the Hamming difference between two DNA strands.
control flow loops
string comparison
easy

Leap

Given a year, report if it is a leap year.
boolean logic
control flow conditionals
input validation
easy

Pangram

Determine if a sentence is a pangram.
string transformation
strings
easy

Raindrops

Convert a number to a string, the contents of which depend on the number's factors.
control flow conditionals
input validation
strings
easy

RNA Transcription

Given a DNA strand, return its RNA Complement Transcription.
associative arrays
control flow loops
error handling
easy

Acronym

Convert a long phrase to its acronym
input validation
string transformation
strings
easy

Anagram

Given a word and a list of possible anagrams, select the correct sublist.
control flow conditionals
control flow loops
string transformation
strings
easy

Bob

Bob is a lackadaisical teenager. In conversation, his responses are very limited.
control flow conditionals
strings
easy

Collatz Conjecture

Calculate the number of steps to reach 1 using the Collatz conjecture
control flow conditionals
input validation
integers
math
easy

Nucleotide Count

Given a DNA string, compute how many times each nucleotide occurs in the string.
control flow loops
error handling
string comparison
easy

Phone Number

Clean up user-entered phone numbers so that they can be sent SMS messages.
control flow conditionals
error handling
string comparison
string transformation
easy

Triangle

Determine if a triangle is equilateral, isosceles, or scalene.
boolean logic
error handling
input validation
number comparison
easy

Word Count

Given a phrase, count the occurrences of each word in that phrase.
control flow loops
string comparison
strings
medium

Gigasecond

Calculate the moment when someone has lived for 10^9 seconds.
dates
medium

Luhn

Given a number determine whether or not it is valid per the Luhn formula.
algorithms
control flow conditionals
integers
medium

Atbash Cipher

Create an implementation of the atbash cipher, an ancient encryption system created in the Middle East.
cryptography
pattern matching
strings
medium

Roman Numerals

Write a function to convert from normal numbers to Roman Numerals.
integers
logic
loops
strings
medium

Affine Cipher

Create an implementation of the Affine cipher, an ancient encryption algorithm from the Middle East.
cryptography
math
strings
easy

Isogram

Determine if a word or phrase is an isogram.
strings
regexp
medium

Diamond

Given a letter, print a diamond starting with 'A' with the supplied letter at the widest point.
loops
strings
string transformation
medium

ISBN Verifier

Check if a given string is a valid ISBN-10 number.
algorithms
integers
string transformation