When running the command sed -e "s/a/b/" /tmp/file >/tmp/file While /tmp/file contains data, why is /tmp/file empty afterwards? A. The file order is incorrect. The destination file must be mentione...

Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO correct answers.) A. find /tmp -uid...

談及麻豆鱷魚王生態教育農場，恐怕不只是台南人，也是許許多多台灣人共同的美好回憶。麻豆鱷魚王一開就是40年，是老闆邱錫河從退伍後就開始經營的，同時也是過去南台灣三大同類型必訪景點之一。麻豆鱷魚王享譽盛名，園區內擁有高達166種來自世界各地的珍奇動物，不僅深受大朋友小朋友喜愛，邱錫河與鎮園之寶小河更是電視節目拍攝取景的常客，不少記者、主播、主持人及甚至演藝圈的眾多知名藝人也都曾經是園區的訪客，只是昔日...

Which command is used in a Linux environment to create a new directory? (Specify ONLY the command without any path or parameters.)

Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types? A. magic B. type C. file D. pmagic E. hash

Which variable defines the directories in which a Bash shell searches for executable commands? A. BASHEXEC B. BASHRC C. PATH D. EXECPATH E. PATHRC

Which of the following command sets the Bash variable named TEST with the content FOO? A. set TEST="FOO" B. TEST = "FOO" C. var TEST="FOO" D. TEST="FOO"

What happens after issuing the command vi without any additional parameters? A. vi starts and loads the last file used and moves the cursor to the position where vi was when it last exited. B. vi sta...

Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard? A. SIGTERM B. SIGINT C. SIGSTOP D. SIGKILL

Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file? A. fmt -f 1,4 /etc/passwd B. split -c 1,4 /etc/passwd C. c...