1 Write a single Unix pipeline command to display only lines 7 to 14 for a file called "input" contained in your current directory) 2 Assume you are under your home directory. Explain what would be the result of issuing the following command? grep -i 'user' /etc/passwd | head -6 | sort | wc-w >> out 3 What is the difference between the cp and the mv command? 4. Write a single Unix command to copy all text files (i.e. files that end with an uppercase or lowercase .txt) from your current directory to your home directory. Make certain that you do not accidentally overwrite any of your files. 5. Assume you are in your home directory. Write a single line command that will list all the files, start with 'a' and matches with any single character and end with '.txt', sort them in reverse, count the number of files and send the output to a file without overwriting it. 6. Write a single Unix pipeline command to display only lines 7 to 14 for a file called "input" contained in your current directory) 7. Assume you are under your home directory. Create a directory and call it midterm 8. Assume you are under the midterm directory. Write a single Unix command to save the current date and time into a file called current_date.txt. 9. What is the cat command used for? Provide an example. 10. Write a single Unix pipeline command to display ( in long format) the total number of files beginning with a number, but not ending with a number. 11. Assume your directory looks as follows: |-- midpractical Issue a single command to convert it as follows: |-midpractical|-test|-test2|-question1