010-160 010-160 - LPI Linux Essentials Process Management and System Monitoring Questions and Answers 3

Question 1

Which command displays the process ID (PID) of a running program by its name?

Accepted Answer

pidof

Answer

getpid

Answer

findpid

Answer

pgrep -n

Question 2

What is the parent process of all other processes on a Linux system, typically having PID 1?

Accepted Answer

init (or systemd)

Answer

kernel

Answer

bash

Answer

cron

Question 3

Which command shows a tree view of processes illustrating parent-child relationships?

Accepted Answer

pstree

Answer

ps tree

Answer

ptree

Answer

proctree

Question 4

What does the `df` command report on a Linux system?

Accepted Answer

Disk filesystem space usage

Answer

Directory file listing

Answer

Default file permissions

Answer

Disk fragmentation

Question 5

Which signal sent by `kill` gracefully requests a process to terminate, allowing cleanup?

Accepted Answer

SIGTERM (15)

Answer

SIGKILL (9)

Answer

SIGHUP (1)

Answer

SIGINT (2)

Question 6

What command can be used to run a process that continues running even after the user logs out?

Accepted Answer

nohup

Answer

bg

Answer

disown

Answer

daemon