Unix MCQ

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• Which of the following signs is used to back up over typing errors in vi?
  ক

  @

  খ

  #

  গ

  $

  ঘ

  !

  ঙ

  None of the above
• Which command is used to link the files?
  ক

  lk

  খ

  ln

  গ

  cp

  ঘ

  tar

  ঙ

  None of the above
• Which operator will be used with chmod command to assign absolute permission?
  ক

  +

  খ

  -

  গ

  =

  ঘ

  %

  ঙ

  None of the above
• Which command is used to terminate all processes in your own system except the login shell?
  ক

  kill 1

  খ

  kill 0

  গ

  cancel all

  ঘ

  cancel 1

  ঙ

  None of the above
• The UNIX file system stores a date in physical blocks of
  ক

  1024 bytes

  খ

  2048 bytes

  গ

  512 bytes

  ঘ

  256 bytes

  ঙ

  None of the above
• The cat command is used to
  ক

  capture a file

  খ

  display a file

  গ

  print a file

  ঘ

  copy a file

  ঙ

  None of the above
• The special shell variable $* is used
  ক

  to exit status of ast command executed.

  খ

  to process number of the current shell

  গ

  to list the positional parameters

  ঘ

  to name the command being executed

  ঙ

  None of the above
• Which of command is used to copy a file?
  ক

  copy

  খ

  cp

  গ

  cpio

  ঘ

  tar

  ঙ

  None of the above
• Which command is used with vi editor to move the cursor to the left?
  ক

  i

  খ

  j

  গ

  k

  ঘ

  h

  ঙ

  None of the above
• Which of the following commands is used to have a two-way communication with any person who is currently logged in?
  ক

  mail

  খ

  mesg

  গ

  write

  ঘ

  grep

  ঙ

  None of the above
• You can append to a file instead of overwriting by using the
  ক

  > symbols

  খ

  >> symbols

  গ

  None of the above
• Which command is used with vi editor to save file and remain in the editing mode?
  ক

  :q

  খ

  :w

  গ

  q!

  ঘ

  :x

  ঙ

  None of the above
• Which of the following commands is used to remove files?
  ক

  erase

  খ

  delete

  গ

  rm

  ঘ

  dm

  ঙ

  . None of the above
• Which of the following commands is not the vi Input mode command?
  ক

  rch

  খ

  R

  গ

  S

  ঘ

  j

  ঙ

  None of the above
• Which command is used to display all the lines with the string 'sales' from the file empl.lst?
  ক

  cut sales empl.lst

  খ

  /sales > empl.lst

  গ

  grep sales empl.lst

  ঘ

  cat | /sales > empl.lst

  ঙ

  None of the above
• Which symbol will be used with grep command to match the pattern pat at the end of a line?
  ক

  ^pat

  খ

  $pat

  গ

  pat$

  ঘ

  pat^

  ঙ

  None of the above
• The command used to remove the directory is;
  ক

  rmdir

  খ

  rd

  গ

  remove

  ঘ

  rdir

  ঙ

  None of the above
• Which of the following shell's wildcards are used to match any number of characters including none?
  ক

  ?

  খ

  *

  গ

  None of the above
• Which of the following commands is used to save the output of the who command in a file named user.lst, as well as display it?
  ক

  who | tee user.lst

  খ

  who > user.lst

  গ

  who >> user.lst

  ঘ

  who

  ঙ

  None of the above
• The first set of the three permissions (rw) pertains to the owner of the file, indicating that the owner has
  ক

  executable permission only

  খ

  write and executable permissions

  গ

  both read and executable permissions.

  ঘ

  both read and write permissions

  ঙ

  None of the above
• Which command will be used with vi editor to append text at end of line?
  ক

  A

  খ

  a

  গ

  i

  ঘ

  I

  ঙ

  None of the above
• Which command is used to assign only read permission to all three categories of the file 'note'?
  ক

  chmod go+r note

  খ

  chmod a-rw

  গ

  chmod ugo=r note

  ঘ

  chmod u+r,g+r,o-x note

  ঙ

  None of the above
• Which of the following keys is used to delete the character beneath the cursor?
  ক

  x

  খ

  X

  গ

  dd

  ঘ

  D

  ঙ

  None of the above
• Which command is used with vi editor to move cursor forward to first occurrence of character 'ch' in the current line?
  ক

  tch

  খ

  fch

  গ

  rch

  ঘ

  ech

  ঙ

  None of the above
• Which of the following command is used to count just the number of lines contained in a file?
  ক

  wc -l

  খ

  wc -c

  গ

  wc -w

  ঘ

  wc -r

  ঙ

  None of the above
• The File that contains a set of instructions which are performed when a user logs in, is
  ক

  .exrc

  খ

  .profile

  গ

  .autoexec

  ঘ

  autoexec.bat

  ঙ

  None of the above
• Which command is used to locate all the .profile files in the system?
  ক

  ls profile

  খ

  find /-name profile -print

  গ

  cd /.profile

  ঘ

  l -u .profile

  ঙ

  None of the above
• Which of the following keys is used to overstrike a whole line?
  ক

  R

  খ

  v

  গ

  C

  ঘ

  u

  ঙ

  None of the above
• Which of the following commands can be used to get information about all users who are currently logged into the system?
  ক

  which

  খ

  who

  গ

  who am i

  ঘ

  1 /u

  ঙ

  None of the above
• Which of the following commands can be used to get information about yourself?
  ক

  who am i

  খ

  i /4

  গ

  pwd

  ঘ

  which

  ঙ

  None of the above