UNIX Shell
Tasks
- 100 doors
- 24 game
- A* search algorithm
- A+B
- ABC Problem
- Accumulator factory
- Ackermann function
- Active Directory/Search for a user
- Align columns
- Anagrams
- Anagrams/Deranged anagrams
- Anonymous recursion
- Append a record to the end of a text file
- Apply a callback to an array
- Arithmetic-geometric mean
- Arithmetic/Complex
- Arithmetic/Integer
- Array concatenation
- Array concatenation
- Array length
- Arrays
- Assertions
- Associative array/Creation
- Associative array/Iteration
- Averages/Arithmetic mean
- Averages/Mode
- Babbage problem
- Balanced brackets
- Binary digits
- Binary search
- Bitcoin/address validation
- Bitmap/Read a PPM file
- Bitmap/Write a PPM file
- Boolean values
- Box the compass
- Bulls and cows
- CSV data manipulation
- CSV to HTML translation
- Caesar cipher
- Calendar
- Call a function
- Case-sensitivity of identifiers
- Check input device is a terminal
- Check output device is a terminal
- Check that file exists
- Classes
- Collections
- Comma quibbling
- Command-line arguments
- Comments
- Compound data type
- Conditional structures
- Copy a string
- Count in octal
- Count occurrences of a substring
- Count the coins
- Create a file
- Create a file on magnetic tape
- Create an HTML table
- Date format
- Date manipulation
- Day of the week
- Define a primitive data type
- Delete a file
- Determine if a string is numeric
- Determine if only one instance is running
- Digital root
- Dinesman's multiple-dwelling problem
- Dutch national flag problem
- Dynamic variable names
- Empty directory
- Empty program
- Empty string
- Enforced immutability
- Environment variables
- Ethiopian multiplication
- Evaluate binomial coefficients
- Even or odd
- Execute a system command
- Extend your language
- Factorial
- Factors of an integer
- Fibonacci sequence
- Filter
- Find common directory path
- Find limit of recursion
- Five weekends
- FizzBuzz
- Fork
- Function composition
- Function definition
- Generate lower case ASCII alphabet
- Generic swap
- Globally replace text in several files
- Greatest element of a list
- Guess the number
- Guess the number/With feedback
- Guess the number/With feedback (player)
- HTTP
- HTTPS
- Hamming numbers
- Handle a signal
- Happy numbers
- Hash from two arrays
- Hello world!
- Hello world/Graphical
- Hello world/Line printer
- Hello world/Newline omission
- Hello world/Standard error
- Hello world/Text
- Hello world/Web server
- Here document
- Hostname
- I before E except after C
- IBAN
- Include a file
- Increment a numerical string
- Input loop
- Input/Output for Pairs of Numbers
- Integer comparison
- Integer sequence
- Interactive programming
- Introspection
- Inverted index
- Keyboard input/Obtain a Y or N response
- Knuth shuffle
- Last Friday of each month
- Leap year
- Least common multiple
- Linear congruential generator
- Linux CPU utilization
- Literals/Integer
- Literals/String
- Long multiplication
- Look-and-say sequence
- Loop over multiple arrays simultaneously
- Loops/Break
- Loops/Do-while
- Loops/Downward for
- Loops/For
- Loops/For with a specified step
- Loops/Foreach
- Loops/Infinite
- Loops/N plus one half
- Loops/Nested
- Loops/While
- Luhn test of credit card numbers
- MD5
- Make directory path
- Matrix multiplication
- McNuggets Problem
- Menu
- Middle three digits
- Modulinos
- Monty Hall problem
- Multisplit
- Mutual recursion
- N-queens problem
- Narcissist
- Narcissistic decimal number
- Native shebang
- Number reversal game
- Old lady swallowed a fly
- Optional parameters
- Palindrome detection
- Pangram checker
- Parsing/RPN calculator algorithm
- Parsing/Shunting-yard algorithm
- Pascal's triangle
- Penney's game
- Phrase reversals
- Play recorded sounds
- Population count
- Power set
- Pragmatic directives
- Primality by trial division
- Program name
- Program termination
- Queue/Definition
- Queue/Usage
- Quine
- Random number generator (device)
- Random number generator (included)
- Range expansion
- Range extraction
- Rate counter
- Read a configuration file
- Read a file line by line
- Read a specific line from a file
- Real constants and functions
- Regular expressions
- Remove lines from a file
- Rename a file
- Rep-string
- Repeat a string
- Respond to an unknown method call
- Return multiple values
- Reverse a string
- Reverse words in a string
- Rock-paper-scissors
- Roman numerals/Decode
- Roman numerals/Encode
- Rosetta Code/Run examples
- Rot-13
- Runtime evaluation
- Runtime evaluation/In an environment
- SHA-1
- Scope/Function names and labels
- Search a list
- Secure temporary file
- Self-describing numbers
- Shell one-liner
- Short-circuit evaluation
- Show the epoch
- Sierpinski carpet
- Sieve of Eratosthenes
- Simple database
- Sleep
- Sockets
- Sort an array of composite structures
- Sort an integer array
- Sorting algorithms/Sleep sort
- Soundex
- Special characters
- Speech synthesis
- Stable marriage problem
- String case
- String comparison
- String concatenation
- String interpolation (included)
- String length
- Strip a set of characters from a string
- Strip comments from a string
- Substring
- Substring/Top and tail
- Sum and product of an array
- Symmetric difference
- System time
- Take notes on the command line
- Temperature conversion
- Terminal control/Clear the screen
- Terminal control/Cursor movement
- Terminal control/Cursor positioning
- Terminal control/Dimensions
- Terminal control/Hiding the cursor
- Terminal control/Inverse video
- Terminal control/Preserve screen
- Terminal control/Ringing the terminal bell
- Terminal control/Unicode output
- Test a function
- Text between
- The Twelve Days of Christmas
- Time a function
- Tokenize a string
- Topic variable
- Topological sort
- Tree traversal
- Truncate a file
- URL decoding
- URL encoding
- Undefined values
- Unicode strings
- Universal Turing machine
- Untrusted environment
- Variable size/Get
- Variables
- Video display modes
- Walk a directory/Non-recursively
- Walk a directory/Recursively
- Web scraping
- Word frequency