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Q51. - (Topic 3)
Which of the following commands will print the last 10 lines of a text file to the standard output?
A. cat -n 10 filename
B. dump -n 10 filename
C. head -n 10 filename
D. tail -n 10 filename
Answer: D
Q52. - (Topic 3)
Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO correct answers.)
A. find /tmp -uid root -print
B. find -path /tmp -uid root
C. find /tmp -user root -print
D. find /tmp -user root
E. find -path /tmp -user root –print
Answer: C,D
Q53. - (Topic 3)
Which shell command is used to continue background execution of a suspended command?
A. &
B. bg
C. cont
D. exec
E. :&
Answer: B
Q54. - (Topic 3)
When running the command
sed -e "s/a/b/" /tmp/file >/tmp/file
While /tmp/file contains data, why is /tmp/file empty afterwards?
A. The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.
B. The command sed did not match anything in that file therefore the output is empty.
C. When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading.
D. Redirection for shell commands do not work using the > character. It only works using the | character instead.
Answer: C
Q55. CORRECT TEXT - (Topic 3)
Which signal is missing from the following command that is commonly used to instruct a daemon to reinitialize itself, including reading configuration files?
killall -s _______ daemon
Answer: HUP, SIGHUP, 1
Q56. - (Topic 1)
What information can the lspci command display about the system hardware? (Choose THREE correct answers.)
A. Device IRQ settings
B. PCI bus speed
C. System battery type
D. Device vendor identification
E. Ethernet MAC address
Answer: A,B,D
Q57. - (Topic 3)
Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?
A. fmt -f 1,4 /etc/passwd
B. split -c 1,4 /etc/passwd
C. cut -d : -f 1,4 /etc/passwd
D. paste -f 1,4 /etc/passwd
Answer: C
Q58. - (Topic 3)
Which of the following commands kills the process with the PID 123 but allows the process to "clean up" before exiting?
A. kill -PIPE 123
B. kill -KILL 123
C. kill -STOP 123
D. kill -TERM 123
Answer: D
Q59. CORRECT TEXT - (Topic 3)
Which command is used in a Linux environment to create a new directory? (Specify ONLY the command without any path or parameters.)
Answer: mkdir, /usr/bin/mkdir
Q60. - (Topic 3)
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
D. echo -n "Hello" >>/tmp/myfile.txt
E. touch /tmp/myfile.txt
Answer: A
