SHA-1 hashing concept in Git - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to show the SHA-1 hash of a file named example.txt.

Git

git hash-object [1]

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

Aexample.txt

Bcommit

Cinit

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using git commands unrelated to hashing like 'commit' or 'status'.

Forgetting to specify the file name.

The command git hash-object example.txt calculates the SHA-1 hash of the file example.txt.

2fill in blank

medium

Complete the command to create a new Git object from the file data.txt and print its SHA-1 hash.

Git

git hash-object -[1] data.txt

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

Ac

Br

Cw

Dm

Attempts:

3 left

💡 Hint

Common Mistakes

Using -r which is not a valid option here.

Using -c or -m which are unrelated.

The -w option writes the object into the Git database and prints its SHA-1 hash.

3fill in blank

hard

Fix the error in the command to get the SHA-1 hash of file.txt by filling the blank.

Git

git hash-object [1] file.txt

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

A-r

B-w

C--hash

D--stdin

Attempts:

3 left

💡 Hint

Common Mistakes

Using -r which is invalid here.

Using --stdin which expects input from standard input.

The correct option to write the object and get its SHA-1 hash is -w. The others cause errors or do not produce the hash.

4fill in blank

hard

Fill both blanks to create a SHA-1 hash of README.md and store it in the Git database.

Git

git hash-object [1] [2]

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

A-w

BREADME.md

C-r

Dfile.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong file names like file.txt.

Using -r instead of -w.

The -w option writes the object, and README.md is the file to hash.

5fill in blank

hard

Fill all three blanks to create a SHA-1 hash of script.sh, write it to the Git database, and then display the hash.

Git

hash=$([1] [2] [3]) && echo $hash

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

Agit hash-object

B-w

Cscript.sh

D-r

Attempts:

3 left

💡 Hint

Common Mistakes

Using -r instead of -w.

Forgetting to specify the file name.

The command hash=$(git hash-object -w script.sh) writes the object and returns the SHA-1 hash, which is stored in hash and then printed.