Practice Pakistan's most useful MCQs for competitive exams

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

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

Answer

Submitted By :Ali Uppal

Which of the following commands is used to remove files ?

• (A)  erase
• (B)  delete
• (C)  rm
• (D)  dm

Answer

Submitted By :Ali Uppal

Which command is used to assign only read permission to all three categories of the file ‘note’ ?

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

Answer

Submitted By :Ali Uppal

The command that can be used to restrict incoming messages to a user is_______________?

• (A)  mesg
• (B)  grep
• (C)  halt
• (D)  sleep

Answer

Submitted By :Ali Uppal

Which of the following commands is used to rename a file ?

• (A)  rename
• (B)  remove
• (C)  mv
• (D)  ren

Answer

Submitted By :Ali Uppal

The second set of the three permissions (r-) indicates that______________?

• (A)  group has read permission only
• (B)  other has read permission only
• (C)  owner has read permission only
• (D)  group has write permission only

Answer

Submitted By :Ali Uppal

Which of the following commands is used to obtain a list of all files by modification time ?

• (A)  ls -1
• (B)  ls -t
• (C)  ls -i
• (D)  ls -R

Answer

Submitted By :Ali Uppal

Which command is used to remove a file ?

• (A)  remove
• (B)  rm
• (C)  mv
• (D)  del

Answer

Submitted By :Ali Uppal

Which symbol will be used with grep command to match the pattern pat at the beginning of a line ?

• (A)  ^pat
• (B)  $pat
• (C)  pat$
• (D)  pat^

Answer

Submitted By :Ali Uppal

Which command is used to remove the read permission of the file ‘note’ from both the group and others ?

• (A)  chmod go+r note
• (B)  chmod go+rw note
• (C)  chmod go-x note
• (D)  chmod go-r note

Answer

Submitted By :Ali Uppal