Given the following input stream:txt1.txtatxt.txttxtB.txtWhich of the following regular expressions turns this input stream into the following output stream? txt1.bak.txt atxt.bak.txt txtB.bak.txt
Which command must be entered before exiting vi to save the current file as filea.txt?
Which of the following signals is sent to a process when the key combination Ctrl+C is pressed on the keyboard?
Which of the following commands displays the output of the foo command on the screen and also writes it to a file called /tmp/foodata?
What output will be displayed when the user fred executes the following command? echo 'fred $USER'
Which type of file system is created by mkfs when it is executed with the block device name only and without any additional parameters?
