What does the ? symbol within regular expressions represent? A. Match the preceding qualifier one or more times. B. Match the preceding qualifier zero or more times. C. Match the preceding qualifier ...

What is the effect of the egrep command when the -v option is used? A. It enables color to highlight matching parts. B. It only outputs non-matching lines. C. It shows the command's version informati...

Which of the following commands moves and resumes in the background the last stopped shell job? A. run B. bg C. fg D. back

Which command displays a list of all background tasks running in the current shell? (Specify ONLY the command without any path or parameters.)

What is the difference between the i and a commands of the vi editor? A. i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switches modes automatically. B....

What is the default action of the split command on an input file? A. It will break the file into new files of 1,024 byte pieces each. B. It will break the file into new files of 1,000 line pieces eac...

What is the default nice level when a process is started using the nice command? A. -10 B. 10 C. 20 D. 0

Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt? A. file /tmp/myfile.txt B. echo "Hello" >/tmp/myfile.txt C. sed -ie "s/1/2/" /tmp/myfile.txt ...

Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailin...

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