# Unix MCQ Questions MCQ

 A } B \{ C | D \$ Question 17 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters?  A cat emp[!0-9] B more [emp][!0-9] C cat emp[x-z] D cat emp[a-z]  Question 18 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is  A tee B tr C sort D grep  Question 19 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] Which command is used to remove a file?  A remove B rm C mv D del  Question 20 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] Which symbol is used to separate more than one command in the same command line?  A \$ B # C : D ;