Assume that you logged in as room$1202$ and now your working directory is $"/$home$/$room$1202",$ directory "exercise$1"$ is right in the working directory. And there are some files in the directory "exercise$1".$ You run the commands, and the results are displayed as follows:$ pwd$/$home$/$room$1202$$ ls exercise$1$file$1$ file$2$ file$3$ file$4$How to make exercise$1$ as your working directory? Please specify the command and arguments.How to display the content of file$1?$ Please specify the command, arguments, and the necessary assumptions.How to display the last $5$ lines in file$2?$ Please specify the command and arguments.How to create a new empty file called file$5?$ Please specify the command and arguments.Note: your answers must use the parameters given in the questions.