ShellCheck for static analysis in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to run ShellCheck on a script named script.sh.

Bash Scripting

shellcheck [1]

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

Ascript.sh

B-v

C--help

Dcheck.sh

Attempts:

3 left

💡 Hint

Common Mistakes

Using options like -v or --help instead of the script file name.

Typing the wrong file name.

To analyze a script with ShellCheck, you run shellcheck followed by the script file name.

2fill in blank

medium

Complete the command to show all ShellCheck warnings including info messages for myscript.sh.

Bash Scripting

shellcheck [1] myscript.sh

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

A-s

B-e

C-a

D-x

Attempts:

3 left

💡 Hint

Common Mistakes

Using -e which excludes warnings.

Using -s which sets the shell dialect.

The -a option tells ShellCheck to show all warnings including info messages.

3fill in blank

hard

Fix the error in the ShellCheck command to analyze build.sh with the shell dialect set to bash.

Bash Scripting

shellcheck [1] build.sh

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

A-s bash

B-s=bash

C--shell bash

D-shell bash

Attempts:

3 left

💡 Hint

Common Mistakes

Using a space instead of equals sign after -s.

Using incorrect option names like --shell.

The correct syntax to set shell dialect is -s=bash with an equals sign.

4fill in blank

hard

Fill both blanks to ignore warning SC2086 and analyze deploy.sh with ShellCheck.

Bash Scripting

shellcheck [1] [2] deploy.sh

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

A-e SC2086

B-s=bash

C-x

D-a

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up options or forgetting to specify the script file.

Using invalid option formats.

Use -e SC2086 to ignore that warning and -s=bash to set shell dialect.

5fill in blank

hard

Fill all three blanks to run ShellCheck on test.sh, output results in JSON format, and enable shellcheck's external sourcing.

Bash Scripting

shellcheck [1] [2] [3] test.sh

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

A-x

B-o json

C-s=bash

D-e SC1090

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing output format option with ignore warning option.

Forgetting to specify shell dialect.

Use -x to enable external sourcing, -o json for JSON output, and -s=bash to set shell dialect.