Question

file content in the CLI Challenge Content concatenation Evaluate your content concatenation skills by completing the following tasks: workspace/project- 1. Append the current user to the log/changelog.txt file: Changelog: Version: 1.0 username: current_user 2. Append the workspace/project-log/file-list.txt file content to the --/Workspace/project-log/changelog.txt file: Changelog Version: 1.0 username: current_user hello.txt hi.txt project-log TIP: Use the tab autocompletion shartout

Answer 1

List Of Commands

1. cat - command in unix shows you the content in the file.

2. >> - Using two right facing angular brackets in command you can output the content of command on the left( left to brackets) to right(of brackets).

3. echo - command writes the evaluation of the right part(right of echo) to console.

4. whoami - command shows you the current user on linux/unix cli.

5. $(any) - Dollar and brackets covering any command, will evaluate the command and assign or print to console/variable as necessary.

Answers:

1. echo "username: "$(whoami) >> ~/workspace/project-log/changelog.txt

Above command will append the content of echo "username: "$(whoami) to File ~/workspace/project-log/changelog.txt

echo "username: "$(whoami) - concatenates username: and output of whoami command and prints onto std output.

>> ~/workspace/project-log/changelog.txt - copies the echo content from above to end of file changelog.txt

2. cat ~/workspace/project-log/file-list.txt >> ~/workspace/project-log/changelog.txt

Above command reads(using cat) the content of file file-list.txt and appends it to ~/workspace/project-log/changelog.txt using >>.

Changelog Version: 1.0 changelog.txt (END)

Changelog: Version: 1.0 usernane asheeshbisht changelog.txt (END)

[asheeshbishtasheeshbishts less changelog.txt [asheeshbisht: asheeshbisht $ less changelog.txt [asheeshbisht: asheeshbisht$ less changelog.txt asheeshbisht:- asheeshbisht$ echo "usernante: '$(whoani) >> Changelog.txt

(asheeshbishtasheeshbishts less changelog.txt [asheeshbisht: asheeshbisht$ less changelog.txt [asheeshbisht: asheeshbisht$ less changelog.txt Casheeshbisht:- asheeshbisht$ echo "username: '$(whoani) >changelog.txt Lasheeshbisht:- asheeshbisht$ less changelog.txt Lasheeshbisht:- asheeshbisht$ cat file-list.txt >> changelog.txt

Changelog: Version: 1.0 username:asheeshbisht Changelog.txt (END)