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NO.1 Once a shell variable has been created, how can the variable be removed from the environment?A. VAR=B. set -d VARC. set -u VARD. unset VARAnswer: DLpi Practice Exam117-101 dumps torrent117-101 testNO.2 Which of the following commands will send output from the program myapp to both standard output(stdout) and the file file1.log?A. cat myapp | cat file1.logB. myapp 01 | cat file1.logC. myapp | cat file1.logD. myapp | tee file1.logE. tee myapp file1.logAnswer: DLpi117-101 answers[...]