please these are easy questions solve all of them and I will upvote you immediately

Question No. 1. Apply UNIX command to perform the following operations. 1. Write a command in UNIX to display all the files in long format 2. Suppose the name of file is "first.html". Write the UNIX command to give the new name "repeat.html" 3. Write a UNIX command to check the help for command "mkdir" 4. I have written one file named "countries.docx". Write a UNIX command to check the spellings 5. Write a UNIX command to see the available free disk space 6. Write a UNIX command to display the calendar for July 1998 . 7. Write a command to show current running process and write command to kill first process. 8. Write command to copy the files named: filel.c, file2.c and file3.c to directory named: "Najran