What is the output of the following command? echo "Hello World" | tr -d aieou A. Hello World B. eoo C. Hll Wrld D. eoo Hll Wrld

What is the purpose of the Bash built-in export command? A. It allows disks to be mounted remotely. B. It runs a command as a process in a subshell. C. It makes the command history available to subsh...

Which function key is used to start Safe Mode in Windows NT? A. F10 B. F8 C. F6 D. Windows NT does not support Safe Mode

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.log B. myapp 0>&1 | cat > fi...

In compliance with the FHS, in which of the directories are man pages found? A. /usr/share/man B. /opt/man C. /usr/doc/ D. /var/pkg/man E. /var/man

許多從Windows系統換到Linux的使用者總是會對Windows上的軟體念念不忘，儘管Windows系統不怎麼好用，但Windows上還是有一些在Linux上無法取代的好用軟體，其中有些只支援32位元，例如Notepad++、Foobar2000。在預設的設定下，64位元的Linux作業系統在安裝Wine的時候會建置出64位元的Windows執行環境。雖然32位元的程式在64位元的環境下也可以...

A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory? A. rmdir '~/\dir' B. rmdir "~/\dir" C. rmdir ~/'dir' D. rmdir ~/\d...

Immediately after deleting 3 lines of text in vi and moving the cursor to a different line, which single character command will insert the deleted content below the current line? A. i (lowercase) B. ...

What is the maximum niceness value that a regular user can assign to a process with the nice command when executing a new process? A. 9 B. 19 C. 49 D. 99

Which signal is missing from the following command that is commonly used to instruct a daemon to reinitialize itself, including reading configuration files?