File existence checks in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the file 'data.txt' exists.

Bash Scripting

if [ [1] "data.txt" ]; then
  echo "File exists"
fi

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

A-f

B-d

C-e

D-s

Attempts:

3 left

💡 Hint

Common Mistakes

Using -d which checks only for directories.

Using -f which checks only for regular files.

Using -s which checks if file exists and is not empty.

The -e option checks if a file or directory exists.

2fill in blank

medium

Complete the code to check if 'log.txt' is a regular file.

Bash Scripting

if [ [1] "log.txt" ]; then
  echo "It's a regular file"
fi

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

A-f

B-e

C-d

D-r

Attempts:

3 left

💡 Hint

Common Mistakes

Using -d which checks for directories.

Using -e which checks for any file or directory.

Using -r which checks if file is readable.

The -f option checks if the file exists and is a regular file (not a directory).

3fill in blank

hard

Fix the error in the code to check if 'folder' is a directory.

Bash Scripting

if [ [1] "folder" ]; then
  echo "It's a directory"
fi

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

A-f

B-d

C-e

D-s

Attempts:

3 left

💡 Hint

Common Mistakes

Using -f which checks for regular files.

Using -e which checks for any file or directory.

Using -s which checks if file is not empty.

The -d option checks if the path is a directory.

4fill in blank

hard

Fill both blanks to check if 'script.sh' exists and is executable.

Bash Scripting

if [ [1] "script.sh" ] && [ [2] "script.sh" ]; then
  echo "Script is ready to run"
fi

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

A-e

B-x

C-f

D-r

Attempts:

3 left

💡 Hint

Common Mistakes

Using -e instead of -f to check for regular file.

Using -r instead of -x to check for executable permission.

-f checks if it is a regular file, and -x checks if it is executable.

5fill in blank

hard

Fill all three blanks to create a dictionary of files and their sizes if size is greater than 0.

Bash Scripting

declare -A file_sizes
for file in *; do
  if [ [1] "$file" ] && [ $( [2] "$file" ) -gt 0 ]; then
    file_sizes[[3]]=$(stat -c%s "$file")
  fi
done

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

A-f

Bstat -c%s

C$file

D-s

Attempts:

3 left

💡 Hint

Common Mistakes

Using -f instead of -s to check file size.

Using filename incorrectly as dictionary key.

Not using stat command to get file size.

-s checks if file size is greater than zero, stat -c%s gets file size, and $file is the key in the dictionary.