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Assume that you logged in as room 1 2 0 2 and now your working directory is / home / room 1 2 0
Assume that you logged in as room and now your working directory is homeroom directory "exercise is right in the working directory. And there are some files in the directory "exercise You run the commands, and the results are displayed as follows:
$ pwd
homeroom
$ ls exercise
file file file file
How to make exercise as your working directory? Please specify the command and arguments.
How to display the content of file Please specify the command, arguments, and the necessary assumptions.
How to display the last lines in file Please specify the command and arguments.
How to create a new empty file called file Please specify the command and arguments.
Note: your answers must use the parameters given in the questions.
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