Please show me how to prefrom each one

QUESTION 33 In bash, 0 (zero) signals true (success) on the command line True False QUESTION 34 Which of the following files will be displayed by this command catch patch catch All of the above None of the above QUESTION 35 What will the following command do? echo Cause an error Output the single character List all files in the current directory None of these answers QUESTION 36 Which command is used to terminate a process? shutdown haltsys Canel None of the above QUESTION 37 When the grep command does not find the pattern in the files) it is searching, it silently returns the prompt. True False QUESTION 38 Consider the following two lines from some script. In which line(s) does we receive input from standard input? WC-la.txt cat a.txt we-1 Only wc-a.but Only cat a.txt Both WC -1 None