Please answer fast with the multiple choice answers only. Thanks a lot

16. Each process is identified by a unique integer alled a) PID 23. The following command will NOT match which selection. $ grep "[aAlglar)[ar]wal" emp.lst a) Agarwal b) agaawal c) agrawal d) aAgrwal e) All will be matched b) PPID c) TID d) PTID 17. Which command shows some attributes of a process? a) pid b) $$ c) ps 24. Choose which regular expression matches all the items in the positive column- not the negative Positive pit spot spate slap two respite Negative d) HOME 18. Shell_ operator is used for running jobs in the background a) $ Pot peat part pt a)ploailt b) p.t d) & 19. Which command is used for locating files? a) search b) find 25. What is the output of the the code below? c) loc 1. def example(a): d) type 3. 4. ?"?"2 return a 20. What will be the output of the following command? 5. >>examplel"hello") $ find/ -name a.out -print a) indentation Error b) cannot perform mathematical operation on strings c) hello2 d) hello2hello a) all files having filename as a.out b) all files in the root directory c) undefined output d) erroneous 21. command is used for displaying the end of the file. a) head b) tail c) Ip d) pr 26. What datatype is the object below? L 1,23, 'hello', 1]. b) dictionary c) array d) tuple 22. To extract specific columns from a file, command is used. 27. Which of the following Boolean expressions is not logically equivalent to the other three? a) not(-6c0 or-6>10) b) -6>50 and-6-10 a) ext b) head c) tr d) cut c) not(-610 or-6= 10) d) not(-610 or-6:10)