sort and uniq in pipelines in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to sort the lines of a file named 'data.txt'.

Bash Scripting

sort [1]

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

A-r

Bdata.txt

C-u

Ddata.csv

Attempts:

3 left

💡 Hint

Common Mistakes

Using options like -r or -u instead of the filename.

Typing the wrong filename.

The 'sort' command followed by the filename 'data.txt' sorts the lines in that file.

2fill in blank

medium

Complete the pipeline to sort the output of 'cat data.txt' and remove duplicate lines.

Bash Scripting

cat data.txt | sort | [1]

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

Agrep

Bhead

Cwc

Duniq

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'grep' or 'wc' instead of 'uniq'.

Not sorting before using 'uniq'.

The 'uniq' command removes duplicate lines from sorted input.

3fill in blank

hard

Fix the error in the pipeline that tries to remove duplicates but does not sort first.

Bash Scripting

cat data.txt | [1] | uniq

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

Asort

Bgrep

Chead

Dtail

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'grep' or 'head' instead of 'sort'.

Not sorting before 'uniq'.

The 'uniq' command only removes adjacent duplicates, so sorting first is necessary.

4fill in blank

hard

Fill both blanks to create a pipeline that sorts 'data.txt' in reverse order and removes duplicates.

Bash Scripting

cat data.txt | sort [1] | uniq [2]

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

A-r

B-c

C-d

D-u

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-c' or '-d' with 'uniq' instead of '-u'.

Not using '-r' to reverse sort.

The '-r' option sorts in reverse order, and '-u' makes 'uniq' output unique lines only.

5fill in blank

hard

Fill all three blanks to create a pipeline that counts how many times each unique line appears in 'data.txt', sorted by count descending.

Bash Scripting

cat data.txt | sort | uniq [1] | sort [2] -k1,1n | sort [3] -k1,1nr

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

A-c

B-k

C-r

D-u

Attempts:

3 left

💡 Hint

Common Mistakes

Not using '-c' with 'uniq' to count.

Wrong sort options or missing reverse sort.

The '-c' option counts duplicates, '-k' specifies sort key, and '-r' sorts in reverse order for descending counts.