What does the ? symbol within regular expressions represent?
In the vi editor, which of the following commands will copy the current line into the vi buffer?
Which command will display messages from the kernel that were output during the normal boot sequence?
Which of the following commands should be added to /etc/bash_profile in order to change the language of messages for an internationalized program to Portuguese (pt)?
What of the following can be done by the command ifconfig? (Choose TWO correct answers.)
Which variable defines the directories in which a Bash shell searches for executable commands?
Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)
Which command is used to set the hostname of the local system? (Specify ONLY the command without any path or parameters.)
Which of the following commands redirects the output of cmd to the file foo.txt, in which an existing file is overwritten?
Which of the following fields can be found in the /etc/group file? (Choose THREE correct answers.)