Report generation script in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the current date in the report header.

Bash Scripting

echo "Report generated on: $(date [1])"

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

A-d

B+%H:%M:%S

C+%Y-%m-%d

D-u

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-d' which expects a date string, not a format.

Using '%H:%M:%S' without '+' which is invalid.

Using '-u' which changes timezone, not format.

The '+%Y-%m-%d' option formats the date command to show the year-month-day format.

2fill in blank

medium

Complete the code to count the number of lines in the file 'data.txt'.

Bash Scripting

line_count=$(wc -l [1])

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

A-w data.txt

Bdata.txt

C-c data.txt

D-m data.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Adding extra flags like '-w' or '-c' which count words or bytes.

Putting the filename before the option '-l'.

The 'wc -l' command counts lines, and the filename 'data.txt' must be given as argument.

3fill in blank

hard

Fix the error in the script to append the summary to 'report.txt'.

Bash Scripting

echo "Summary: Total lines = $line_count" [1] report.txt

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

A>>

B|

C<

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' which overwrites the file.

Using '<' which is input redirection.

Using '|' which pipes output to another command.

The '>>' operator appends output to the file without overwriting it.

4fill in blank

hard

Fill both blanks to create a loop that processes each line in 'data.txt'.

Bash Scripting

while IFS=[1] read -r [2]; do
  echo "Processing: $[2]"
done < data.txt

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

A""

Bline

Cword

D' '

Attempts:

3 left

💡 Hint

Common Mistakes

Setting IFS to a space which splits words, not lines.

Using 'word' which is misleading for line reading.

Setting IFS to empty string preserves leading/trailing spaces; 'line' is a common variable name for each line.

5fill in blank

hard

Fill all three blanks to create a dictionary-like summary of word counts from 'data.txt'.

Bash Scripting

declare -A word_counts
while read -r [1]; do
  ((word_counts[[2]][3]1))
done < data.txt

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

Aword

C+=

D-=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-=' which subtracts instead of adds.

Using different variable names causing errors.

We read each word into 'word', then increment its count with '+=' operator in the associative array.