Practice Pakistan's most useful MCQs for competitive exams

Which command is used to make all files and sub-directories in the directory (progs) executable by all users ?

• (A)  chmod -R a+x progs
• (B)  chmod -R 222 progs
• (C)  chmod -1 a+x progs
• (D)  chmod -x a+x progs

Answer

Submitted By :Ali Uppal

Which commands is used to assign executable permission to all of the files named “letter” ?

• (A)  chmod ugo+r letter
• (B)  chmod ugo+rw letter
• (C)  chmod u+x letter
• (D)  chmod ugo+x letter

Answer

Submitted By :Ali Uppal

In Bourne shell, which file sets the Unix environment for the user when the logs into his HOME directory ?

• (A)  .exrc
• (B)  .profile
• (C)  lastlogin
• (D)  .mbox

Answer

Submitted By :Ali Uppal

Which of the following command is used to go to home directory ?

• (A)  cd..
• (B)  cd/
• (C)  cd
• (D)  cd HOM

Answer

Submitted By :Ali Uppal

The first set of the three permissions (rw) pertains to the owner of the file, indicating that the owner has_______________?

• (A)  executable permission only
• (B)  write and executable permissions
• (C)  both read and executable permissions.
• (D)  both read and write permissions

Answer

Submitted By :Ali Uppal

You can append to a file instead of overwriting by using the________________?

• (A)  > symbols
• (B)  >> symbols
• (C)  < symbols
• (D)  << symbols

Answer

Submitted By :Ali Uppal

Which of the following shell’s wildcards are used to match any number of characters including none ?

• (A)  [ijk]
• (B)  [!ijk]
• (C)  ?
• (D)  *

Answer

Submitted By :Ali Uppal

Which command is used to terminate all processes in your own system except the login shell ?

• (A)  kill 1
• (B)  kill 0
• (C)  cancel all
• (D)  cancel 1

Answer

Submitted By :Ali Uppal

What command is used to remove files ?

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

Answer

Submitted By :Ali Uppal

Which of the following is not a communication command ?

• (A)  grep
• (B)  mail
• (C)  mesg
• (D)  write

Answer

Submitted By :Ali Uppal