wget for file downloads in Linux CLI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to download a file from a URL using wget.

Linux CLI

wget [1]

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

Ahttp://example.com/file.txt

B-O output.txt

C-q

D--help

Attempts:

3 left

💡 Hint

Common Mistakes

Using options like -O or -q without specifying the URL.

Trying to download without giving the file address.

The wget command followed by the URL downloads the file from that URL.

2fill in blank

medium

Complete the code to save the downloaded file with a custom name.

Linux CLI

wget [1] http://example.com/file.txt

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

A--help

B-q

C-c

D-O output.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Using -q which makes wget quiet but does not rename the file.

Forgetting to specify the output file name after the option.

The -O option followed by a filename saves the download with that name.

3fill in blank

hard

Fix the error in the command to resume a partially downloaded file.

Linux CLI

wget [1] http://example.com/largefile.zip

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

A-c

B-O

C-q

D--help

Attempts:

3 left

💡 Hint

Common Mistakes

Using -O which overwrites the file instead of resuming.

Using -q which only quiets output but does not resume.

The -c option tells wget to continue a download from where it left off.

4fill in blank

hard

Fill both blanks to download a file quietly and save it with a custom name.

Linux CLI

wget [1] [2] http://example.com/data.csv

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

A-q

B-O data.csv

C-c

D--help

Attempts:

3 left

💡 Hint

Common Mistakes

Using -c instead of -q for quiet mode.

Forgetting to specify the filename after -O.

The -q option makes wget quiet, and -O followed by filename saves with that name.

5fill in blank

hard

Fill all three blanks to download a file, resume if interrupted, and save with a custom name.

Linux CLI

wget [1] [2] [3] http://example.com/video.mp4

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

A-q

B-c

C-O video.mp4

D--help

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of options.

Omitting the filename after -O.

Using --help which only shows help info.

Use -q for quiet, -c to continue downloads, and -O to set the output filename.

Practice

1. What is the primary purpose of the wget command in Linux?

easy

A. To download files from the internet

B. To upload files to a server

C. To list files in a directory

D. To edit text files

Solution

1. Step 1: Understand the function of wget

   The wget command is designed to retrieve files from the internet using HTTP, HTTPS, or FTP protocols.

2. Step 2: Compare options with wget's purpose

   Uploading files, listing directories, or editing text are not functions of wget. It only downloads files.

3. Final Answer:

   To download files from the internet -> Option A

4. Quick Check:

   wget downloads files [OK]

Hint: Remember: wget = get files from web [OK]

Common Mistakes:

• Confusing wget with upload commands like scp
• Thinking wget edits or lists files
• Assuming wget is for local file operations

2. Which of the following is the correct syntax to download a file from http://example.com/file.txt using wget?

easy

A. wget -d http://example.com/file.txt

B. wget http://example.com/file.txt

C. wget download http://example.com/file.txt

D. wget -save http://example.com/file.txt

Solution

1. Step 1: Recall basic wget syntax

   The basic command to download a file is simply wget URL without extra flags.

2. Step 2: Analyze each option

   wget -d http://example.com/file.txt uses an invalid flag -d. wget download http://example.com/file.txt adds an unnecessary word download. wget -save http://example.com/file.txt uses a non-existent flag -save. Only wget http://example.com/file.txt is correct.

3. Final Answer:

   wget http://example.com/file.txt -> Option B

4. Quick Check:

   Basic wget syntax = wget URL [OK]

Hint: Use just 'wget' plus URL to download [OK]

Common Mistakes:

• Adding extra words or flags not supported by wget
• Using incorrect or made-up options
• Confusing wget syntax with other commands

3. What will be the output filename when you run wget http://example.com/data.csv in your current directory?

medium

A. index.html

B. downloaded_file

C. http://example.com/data.csv

D. data.csv

Solution

1. Step 1: Understand wget default naming

   By default, wget saves the downloaded file with the same name as in the URL's last part, here data.csv.

2. Step 2: Check other options

   index.html is default for HTML pages without filename. http://example.com/data.csv is invalid as wget does not save with full URL as filename. downloaded_file is arbitrary and not default.

3. Final Answer:

   data.csv -> Option D

4. Quick Check:

   Filename = last URL part = data.csv [OK]

Hint: Filename defaults to last part of URL [OK]

Common Mistakes:

• Expecting wget to rename files automatically
• Confusing default HTML save name with other files
• Thinking wget saves full URL as filename

4. You run wget -c http://example.com/bigfile.zip but it restarts download from zero instead of resuming. What is the likely cause?

medium

A. The URL is incorrect

B. You forgot to add the -r option

C. The server does not support resuming downloads

D. wget cannot download zip files

Solution

1. Step 1: Understand -c option in wget

   The -c option tells wget to continue/resume an interrupted download if the server supports it.

2. Step 2: Identify why resume fails

   If the server does not support partial content requests, wget cannot resume and restarts from zero. Other options or file types do not affect this behavior.

3. Final Answer:

   The server does not support resuming downloads -> Option C

4. Quick Check:

   -c needs server support [OK]

Hint: Resume needs server support, else restart [OK]

Common Mistakes:

• Thinking -r is for resume (it's for recursive)
• Assuming wget can't download zip files
• Blaming URL without checking server features

5. You want to download multiple files listed in urls.txt using wget, saving each with its original name. Which command correctly does this?

hard

A. wget -i urls.txt

B. wget -o urls.txt

C. wget --save-urls urls.txt

D. wget -c urls.txt

Solution

1. Step 1: Understand wget options for multiple downloads

   The -i option tells wget to read URLs from a file and download each one.

2. Step 2: Check other options

   -o is for log file output, not URLs. --save-urls is not a valid option. -c is for resuming downloads, not reading URL lists.

3. Final Answer:

   wget -i urls.txt -> Option A

4. Quick Check:

   Use -i to read URLs from file [OK]

Hint: Use -i to download from URL list file [OK]

Common Mistakes:

• Using -o instead of -i for input file
• Assuming -c reads URL lists
• Trying non-existent options like --save-urls