Search Pattern MCQ

Test your knowledge with important Search Pattern MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Search Pattern MCQs at Bissoy

• What is the command that can print lines of first file matching with second file?
  ক

  printline

  খ

  cmp

  গ

  com

  ঘ

  comm
• who | cut –d ” ” -f1 what is the ouput if the who command displays like this user1 tty 0 1234
  ক

  user1

  খ

  user1 tty 0 1234

  গ

  tty

  ঘ

  tty 0 1234
• One of the entry of /etc/passwd file is shown below: user1:x:1111:2222:Sanfoundry:/home/user1:/bin/bash Which among the following will print userid and home dir in the following pattern “user1:/home/user1”
  ক

  awk `{print $1 “:” $6}` /etc/passwd

  খ

  awk `{print $1 “:” $7}` /etc/passwd

  গ

  awk `{print $2 “:” $6}` /etc/passwd

  ঘ

  awk `{print $2 “:” $7}` /etc/passwd
• How do you remove duplicate lines from the file foo using uniq?
  ক

  sort foo | uniq –u

  খ

  sort -u foo | uniq -d

  গ

  sort foo | uniq –c

  ঘ

  sort foo | uniq –I
• Indicate the right option to search for anything not a letter or number ’ b) grep ‘’ c) grep ‘’ d) None of the mentioned
  ক

  grep ‘^’

  খ

  a-zA-Z0-9

  গ

  a-zA-Z0-9

  ঘ

  a-zA-Z0-9
• Indicate the right option to search for BOB, Bob, BOb or BoB? ’ files c) grep ‘’ files d) grep -v ‘Bob’ files
  ক

  grep –i Bob files

  খ

  grep ‘B[oO

  গ

  oO

  ঘ

  oO
• Which one is used to select only one copy of the repeated lines?
  ক

  uniq -u

  খ

  uniq -d

  গ

  uniq -c

  ঘ

  uniq –I
• What will be printed for the command below? $ grep –c “^echo” abc
  ক

  The count of lines that do not contain the pattern echo in file abc

  খ

  The count of lines which begin with the pattern echo in file abc

  গ

  The count of lines that ends with the pattern echo in file abc

  ঘ

  None of the mentioned
• Assuming the files fileA, fileB, fileAB, fileBC and fileABC, exist in a directory, which files match with the pattern file?
  ক

  ? ] fileA, fileB and fileABC

  খ

  ABC

  গ

  ABC

  ঘ

  ABC
• How can you search for blank line in a file? file d) $ grep file
  ক

  $ grep “ “ file

  খ

  $ grep “^$” file

  গ

  $ grep [“ “

  ঘ

  “ “
• Which option of grep displays the line number as well?
  ক

  -v

  খ

  -l

  গ

  -n

  ঘ

  -E