In a Linux system, the following two sets of commands are equivalent cat afile | grep "xyz" >output.p3 cat afile >out grep "xyz" output.p3 rm out Please compare and explain the performance difference of these two sets of commands in terms space and time. Please also make an experiment to test and verify your analysis on the performance with a huge text file "afile" (larger than 500MB). (1) Show how you get the huge text "afile" (larger than 500MB). (2) Show how you measure the time with bash commands. (3) Show and compare the measurement data of your experiments.