Multiple-choice questions based on Linux for DevOps
1. What command is used to display the contents of a file in Linux?
A) ls
B) cat
C) pwd
D) grep
Answer: B) cat
2. Which command is used to list all files including hidden files in a directory?
A) ls
B) dir
C) list
D) ll
Answer: D) ll
3. Which command is used to search for a specific string in files?
A) grep
B) find
C) search
D) locate
Answer: A) grep
4. What command is used to display the current working directory?
A) cd
B) pwd
C) dir
D) ls
Answer: B) pwd
5. Which command is used to change permissions of a file in Linux?
A) chmod
B) chown
C) chgrp
D) perm
Answer: A) chmod
6. What command is used to create a new directory in Linux?
A) md
B) mkdir
C) newdir
D) touch
Answer: B) mkdir
7. Which command is used to display the manual of other commands in Linux?
A) help
B) man
C) info
D) manual
Answer: B) man
8. What command is used to copy files or directories in Linux?
A) cp
B) mv
C) copy
D) scp
Answer: A) cp
9. Which command is used to remove files or directories in Linux?
A) rm
B) del
C) erase
D) remove
Answer: A) rm
10. What command is used to find out the disk usage of files and directories?
A) du
B) df
C) dusage
D) disk
Answer: A) du
11. Which command is used to change the current user's password in Linux?
A) passwd
B) pass
C) chpass
D) setpass
Answer: A) passwd
12. What command is used to display the last few lines of a file in Linux?
A) head
B) tail
C) last
D) view
Answer: B) tail
13. Which command is used to list all currently running processes in Linux?
A) ps
B) proc
C) top
D) lsproc
Answer: A) ps
14. What command is used to compress files or directories in Linux?
A) zip
B) compress
C) gzip
D) tar
Answer: C) gzip
15. Which command is used to display the IP address configuration of all network interfaces?
A) ip
B) ifconfig
C) netstat
D) ifip
Answer: B) ifconfig
16. What command is used to schedule tasks to run periodically in Linux?
A) cron
B) task
C) timer
D) schedule
Answer: A) cron
17. Which command is used to install packages in Debian-based Linux distributions?
A) yum
B) apt-get
C) pkg
D) install
Answer: B) apt-get
18. What command is used to list all environment variables in Linux?
A) env
B) set
C) showenv
D) vars
Answer: A) env
19. Which command is used to display the routing table in Linux?
A) route
B) ifconfig
C) netstat
D) routeinfo
Answer: A) route
20. What command is used to kill a process in Linux by its process ID (PID)?
A) kill
B) stop
C) end
D) terminate
Answer: A) kill
21. Which command is used to create symbolic links in Linux?
A) ln
B) link
C) sym
D) sl
Answer: A) ln
22. What command is used to display the version of the Linux kernel?
A) kernel
B) uname
C) version
D) sysinfo
Answer: B) uname
23. Which command is used to view a file in hexadecimal format in Linux?
A) hex
B) hview
C) xxd
D) hexview
Answer: C) xxd
24. What command is used to monitor real-time system performance in Linux?
A) top
B) perf
C) monitor
D) ps
Answer: A) top
25. Which command is used to display information about currently mounted file systems?
A) mount
B) df
C) fstab
D) mounted
Answer: B) df
26. What command is used to set up a secure shell (SSH) connection to a remote server?
A) ssh
B) secure
C) connect
D) shell
Answer: A) ssh
27. Which command is used to find files in Linux based on various criteria?
A) find
B) search
C) locate
D) grep
Answer: A) find
28. What command is used to check the status of a service in Linux?
A) service
B) status
C) check
D) systemctl
Answer: D) systemctl
29. Which command is used to display information about the CPU in Linux?
A) cpuinfo
B) processor
C) lscpu
D) cpustat
Answer: C) lscpu
30. What command is used to change the owner of a file or directory in Linux?
A) chown
B) chmod
C) own
D) user
Answer: A) chown
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