$1.$ Use ECHO to display your first and last name on the command prompt.

Provide screenshot$($s$)$ that depict both the Command and Answer Validation.

Answer:

$2.$ This challenge exercise aims to test your understanding and proficiency in handling date and time functions in programming. By displaying the number of seconds elapsed since the Unix Epoch time, formatting a date in the specified YYYY$-$MM$-$DD format, and showing the current military time, you'll demonstrate your ability to work with different date and time representations and formats.

Challenge Exercise:

Write a program that accomplishes the following tasks:

$1.$ Display the number of seconds elapsed since Unix Epoch time $(1970-01-0100$:$00$:$00$ UTC$).$

$2.$ Provide the current date using the format YYYY$-$MM$-$DD$.$

$3.$ Display the current military time.

Ensure that the output is presented in a single line with spaces separating the output values, similar to the provided format. Format should look similar to: $15802342202020-01-2817$:$57$

Hint:

General Comment, refer to $5\mathrm{.}3\mathrm{.}1$ Arguments and $5\mathrm{.}3\mathrm{.}2$ Options; $6\mathrm{.}2\mathrm{.}1$ Viewing Man Pages; $6\mathrm{.}2\mathrm{.}3$ Searching Man Pages. Use of the $$date $--$help$$ command will showcase $$format$$ options to achieve desired results.

Provide screenshot$($s$)$ that depict both the Command and Answer Validation.

Answer:

$3.$ This challenge exercise aims to test your ability to search for files potentially containing passwords based on a specific criterion. By searching for filenames containing the phrase "pass," you simulate a scenario where you need to identify files that might contain sensitive information. The instruction to return all results with this string ensures thoroughness in the search process.

To complete the exercise, you're required to find files with filenames containing the specified phrase and provide evidence of your findings. Since there might be multiple output pages, capturing screenshots of the first and last pages helps demonstrate the scope of the search results effectively.

Challenge Exercise:

Find files that may contain passwords. Search for filenames containing the phrase "pass" and return all results with this string. Due to potential multiple output pages, capturing screenshots of the first and last pages is acceptable. Provide evidence of your findings.

Hint:

General Comment, refer to $5\mathrm{.}6\mathrm{.}1$ Double Quotes; $6\mathrm{.}3\mathrm{.}2$ Find Any File or Directory

Provide screenshot$($s$)$ that depict both the Command and Answer Validation.

Answer:

$4.$ This question challenges participants to demonstrate their understanding of file permissions in a Unix$-$like operating system. "passwd.md$5$sums" is a filename provided as an example. Participants are expected to explain the meaning of the permissions $($read$,$ write, and execute$)$ for the owner, group, and others of the file, possibly in symbolic notation $($e$.$g$.,$ rwxr$-$x$---).$ They should also explain how to interpret these permissions in the context of access control.

Challenge Exercise:

Explain the file permissions for "passwd.md$5$sums" in a Unix$-$like system, including the permissions for the owner, group, and others. Provide your answer in symbolic notation $($e$.$g$.,$ rwxr$-$x$---)$ and briefly describe the access rights each permission grants.

Hint:

General Comment, refer to $6\mathrm{.}2\mathrm{.}2$ Sections Within Man Pages; Refer to $5\mathrm{.}3\mathrm{.}1$ Arguments and $5\mathrm{.}3\mathrm{.}2$ Options. Remember permissions are for the file, so ensure you first locate then move to the file before trying to display file permissions.

Provide screenshot$($s$)$ that depict both the Command and Answer Validation.