Looping over files and directories in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to loop over all files in the current directory.

Bash Scripting

for file in [1]; do echo "$file"; done

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

A~

B.

C/

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using '.' which refers to the current directory itself, not the files inside.

Using '/' which refers to the root directory.

Using '~' which refers to the home directory.

The asterisk (*) matches all files and directories in the current directory.

2fill in blank

medium

Complete the code to loop over all '.txt' files in the 'docs' directory.

Bash Scripting

for file in docs/[1]; do echo "$file"; done

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

A*.txt

B*.doc

Ctxt.*

Ddocs.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Using '*.doc' which matches files with '.doc' extension, not '.txt'.

Using 'txt.*' which is not a valid pattern for '.txt' files.

Using 'docs.txt' which is a filename, not a pattern.

The pattern '*.txt' matches all files ending with '.txt' in the 'docs' directory.

3fill in blank

hard

Fix the error in the code to loop over directories only in the current folder.

Bash Scripting

for dir in [1]; do echo "$dir"; done

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

A*/**

B*/

C.*

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using '*' which matches files and directories.

Using '.*' which matches hidden files and directories.

Using '*/**' which is not a valid pattern in basic bash globbing.

The pattern '*/' matches only directories in the current directory because directories end with a slash.

4fill in blank

hard

Fill both blanks to loop over all '.log' files larger than 1MB in the 'logs' directory.

Bash Scripting

for file in logs/[1]; do if [[ $(stat -c%s "$file") [2] 1048576 ]]; then echo "$file"; fi; done

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

A*.log

B>

C<

D*.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Using '*.txt' which matches wrong file types.

Using '<' which checks for smaller files, not larger.

Forgetting to quote "$file" in stat command.

Use '*.log' to match log files and '>' to check if file size is greater than 1MB (1048576 bytes).

5fill in blank

hard

Fill all three blanks to create a dictionary-like output of filenames and their sizes for '.csv' files in 'data' directory larger than 500 bytes.

Bash Scripting

declare -A sizes; for file in data/[1]; do size=$(stat -c%s "$file"); if [[ $size [2] 500 ]]; then sizes[[3]]=$size; fi; done; for f in "${!sizes[@]}"; do echo "$f: ${sizes[$f]} bytes"; done

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

A*.csv

B>

C"$file"

D*.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Using '*.txt' which selects wrong files.

Using '<' which checks for smaller files.

Not quoting the filename as array key causing errors with spaces.

Use '*.csv' to select CSV files, '>' to check size greater than 500 bytes, and '"$file"' as the key in the associative array.