set -o pipefail in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable the pipefail option in bash.

Bash Scripting

set [1] pipefail

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

A-u

B-e

C-x

D-o

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-e' instead of '-o' disables immediate exit on error, not pipefail.

Using '-x' enables debugging, not pipefail.

The set -o pipefail command enables the pipefail option, which causes a pipeline to return the exit status of the last command to fail.

2fill in blank

medium

Complete the code to check if pipefail is enabled in the current shell.

Bash Scripting

shopt [1] pipefail

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

A-u

B-o

C-p

D-s

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-s' sets an option instead of showing it.

Using '-p' or '-u' are invalid for this purpose.

The shopt -o pipefail command shows if the pipefail option is set or not.

3fill in blank

hard

Fix the error in the code to enable pipefail correctly.

Bash Scripting

set [1] pipefail

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

A-e

B-p

C-o

D-x

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-e' instead of '-o' causes the command to not enable pipefail.

Using '-p' or '-x' are unrelated options.

The correct flag to enable pipefail is '-o'. Using '-e' or others will not enable pipefail.

4fill in blank

hard

Fill both blanks to create a pipeline that fails if any command fails, using pipefail.

Bash Scripting

set [1] pipefail
cat file.txt | grep 'hello' | [2]

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

A-o

Bsort

Cwc -l

Dawk '{print $1}'

Attempts:

3 left

💡 Hint

Common Mistakes

Not enabling pipefail causes the pipeline to ignore failures.

Using 'sort' or 'awk' changes the output meaning.

First, enable pipefail with set -o pipefail. Then, the pipeline ends with wc -l to count lines matching 'hello'.

5fill in blank

hard

Fill all three blanks to create a script that enables pipefail, runs a pipeline, and checks the exit status.

Bash Scripting

set [1] pipefail
output=$(cat file.txt | grep 'error' | [2])
if [[ $? [3] 0 ]]; then echo "Success"; else echo "Failure"; fi

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

A-o

Bwc -l

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '==' reverses the success check.

Not enabling pipefail causes false success.

Enable pipefail with set -o pipefail. Use wc -l to count lines with 'error'. Then check if exit status equals zero with ==.