Practice Pakistan's most useful MCQs for competitive exams

Which command is used to sort the lines of data in a file in reverse order__________________?

• (A)  sort
• (B)  sh
• (C)  st
• (D)  sort -r

Answer

Submitted By :Ali Uppal

What command is used to assign only read permission to all three categories of the file’letter’ ?

• (A)  chmod u + r, g + r, o – x letter
• (B)  chmod ugo = r letter
• (C)  chmod a – rw letter
• (D)  chmod go + r letter

Answer

Submitted By :Ali Uppal

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

• (A)  @
• (B)  #
• (C)  $
• (D)  !

Answer

Submitted By :Ali Uppal

Which of the following commands is not the vi Input mode command ?

• (A)  rch
• (B)  R
• (C)  S
• (D)  j

Answer

Submitted By :Ali Uppal

Which command is used to save the standard output in a file, as well as display it on the terminal ?

• (A)  more
• (B)  cat
• (C)  grep
• (D)  tee

Answer

Submitted By :Ali Uppal

Which of the following commands can be used to get information about yourself ?

• (A)  who am i
• (B)  i /4
• (C)  pwd
• (D)  which

Answer

Submitted By :Ali Uppal

If a file has read and write permissions for the owner, then the octal representation of the permissions will be_________________?

• (A)  1
• (B)  6
• (C)  5
• (D)  3

Answer

Submitted By :Ali Uppal

The command chmod 761 note is equivalent to_________________?

• (A)  chmod 167 note
• (B)  chmod u=rwx, g=rw, o=x note
• (C)  chmo a =761 note
• (D)  chmod 4=7, g=6,0 =1 note

Answer

Submitted By :Ali Uppal

The command to count the number of files in the current directory by using pipes, is_______________?

• (A)  ls | wc
• (B)  ls -l | wc -l
• (C)  ls | wc -w
• (D)  ls | ws -c

Answer

Submitted By :Ali Uppal

Which command is used to print a file ?

• (A)  print
• (B)  prn
• (C)  pg
• (D)  lp

Answer

Submitted By :Ali Uppal