Dir operations for directories in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to list all files in the current directory.

Ruby

files = Dir.[1](".")
puts files

Drag options to blanks, or click blank then click option'

Aentries

Bopen

Cread

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using Dir.open returns a directory object, not an array.

Dir.read is not a valid method.

Dir.list does not exist.

The Dir.entries method returns an array of all entries in the specified directory.

2fill in blank

medium

Complete the code to change the current working directory to '/tmp'.

Ruby

Dir.[1]("/tmp")

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Aopen

Bcd

Cchange

Dchdir

Attempts:

3 left

💡 Hint

Common Mistakes

Using Dir.open does not change directory.

Dir.cd is not a Ruby method.

Dir.change does not exist.

The Dir.chdir method changes the current working directory to the specified path.

3fill in blank

hard

Fix the error in the code to get the current working directory.

Ruby

current_dir = Dir.[1]

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Apwd

Bpwd()

Cgetwd

Dget_current_dir

Attempts:

3 left

💡 Hint

Common Mistakes

Dir.pwd is an alias for Dir.getwd.

Dir.pwd() is invalid syntax in Ruby.

Dir.get_current_dir does not exist.

The correct method to get the current working directory is Dir.getwd.

4fill in blank

hard

Fill both blanks to create a new directory named 'test_dir' and then remove it.

Ruby

Dir.[1]("test_dir")
Dir.[2]("test_dir")

Drag options to blanks, or click blank then click option'

Amkdir

Brmdir

Cremove

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using Dir.remove or Dir.delete which do not exist.

Trying to remove a directory before creating it.

Dir.mkdir creates a new directory, and Dir.rmdir removes an empty directory.

5fill in blank

hard

Fill all three blanks to list all Ruby files in the current directory using a pattern.

Ruby

ruby_files = Dir.[1]("*.[2]")
ruby_files.each do |[3]|
  puts [3]
end

Drag options to blanks, or click blank then click option'

Aglob

Brb

Cfile

Dfilename

Attempts:

3 left

💡 Hint

Common Mistakes

Using Dir.entries instead of Dir.glob for pattern matching.

Using incorrect file extension.

Using a block variable name that is not consistent.

Dir.glob lists files matching a pattern. '*.rb' matches Ruby files. The block variable file represents each filename.