Which of the following is responsible for starting system and network services at boot time?
A. kernel
B. boot loader
C. init
D. GRUB
查看答案
Which of the following is responsible for launching Linux?
A. Boot loader
B. init
C. X Window System
D. BIOS
Which command is used to extract columns from a file to work on them later?
A. tr
B. tee
C. wc
D. cut
Which of the following grep commands can be used to print out all of the lines that do not match the specified pattern?
A. grep -C 3 [pattern]
B. grep -v [pattern]
C. grep [pattern]
D. grep -w [pattern]
Which commands can be used to print the lines that contain the numbers 0–5 in a file? Select all answers thst apply.
A. grep [0,1,2,3,4,5] filename
B. grep [0-5] filename
C. grep [-e0 -e1 -e2 -e3 -e4 -e5] filename
D. grep {0-5} filename