Linux Searching & Filtering

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Question 1

You want to find all .log files modified in the last 2 days in /var/log and display their full paths. Which command is correct?

  • find /var/log -name "*.log" -mtime 2

  • find /var/log -type f -mtime -2 -name "*.log"

  • find /var/log -type d -mtime -2 -name "*.log"

  • find /var/log -mtime +2 -name "*.log"

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Question 2

You need to find all files with permission 777 inside /home, but skip hidden directories. Which command will achieve this?

  • find /home -type f -perm 777 -not -path "*/.*"

  • find /home -perm 777 -a ! -name ".*"

  • find /home -perm 777 -exclude hidden

  • find /home -type f -perm 777 --skip-hidden

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Question 3

The command below is executed:

find . -type f -name "*.conf" -exec grep -l "Listen" {} \;

  • Print all .conf files that contain “Listen”

  • Display the number of lines matching “Listen”

  • Delete all .conf files that contain “Listen”

  • Print matching lines instead of filenames

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Question 4

Which of the following grep commands will search for “error” (case-insensitive) inside all .log files in /var/log, and also show line numbers?

  • grep -in "error" /var/log/*.log

  • grep -ni error /var/log

  • grep -l "error" /var/log/*.log

  • grep "error" -n -r /var/log/*.log

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Question 5

The command locate sample.txt shows results that include files you recently deleted. Why?

  • locate command is showing cached results from a database that hasn’t been updated.

  • File recovery feature of locate retrieves deleted files.

  • The database of locate is corrupted.

  • The /tmp folder keeps deleted file paths for 24 hours.

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Question 6

You want to display only filenames that contain the word “admin” but not show the actual matched lines.

  • grep -o "admin" *

  • grep -l "admin" *

  • grep -n "admin" *

  • grep -v "admin" *

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Question 7

You run this command:

find /home/user -empty

  • Only empty files

  • Only empty directories

  • Both empty files and directories

  • Only hidden empty files

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Question 8

Which of the following is the correct syntax to find .tmp files and delete them after confirmation?

  • find . -name "*.tmp" | rm -i

  • find . -type f -name "*.tmp" -exec rm -i {} \;

  • find . -delete "*.tmp"

  • rm -i $(find . "*.tmp")

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Question 9

You want to find all .txt files under /documents but limit the search depth to only one subdirectory level.

  • find /documents -maxdepth 1 -name "*.txt"

  • find /documents -depth 1 -name "*.txt"

  • find /documents -mindepth 1 -name "*.txt"

  • find /documents -onlydepth 1 -name "*.txt"

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Question 10

You want to count the number of times the word “root” appears in /etc/passwd.

  • grep -n "root" /etc/passwd

  • grep -c "root" /etc/passwd

  • grep -o "root" /etc/passwd | wc -l

  • Both B and C

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